Hydrologic Outlook
Ends in 13 h 47 min
When
Until Sun 6:15 AM
Where
Hawaii in Hawaii, HI; Oahu in Honolulu, HI; Kauai, HI; Maui, HI
Issued for this county · National Weather Service Honolulu HI
Full alert textHide details
ESFHFO
A significant pattern change is expected Monday night through at least Thursday as deep tropical moisture is brought north. A combination of surface lows and troughs will bring exceptionally moist air over the eastern end of the state beginning Monday night and extending to all islands Tuesday. Heavy rain and thunderstorms are possible throughout this period. Models have not converged on details yet, so exact locations, timing, and rainfall amounts are not certain. Please be prepared for periods of heavy rain this coming week.
Keep up to date with the latest forecast information through the Internet (weather.gov/hawaii), local media, social media, or NOAA Weather Radio broadcasts.
An updated outlook will be issued Sunday by 6 AM HST or sooner if necessary.
Areas: Hawaii in Hawaii, HI; Oahu in Honolulu, HI; Kauai, HI; Maui, HI
See it on weather.gov (opens in a new tab)

Observed 3:55 PM HST at PHSF

Pahoa, HI weather

Sunny and 73°23°, rain ~6–3 PM (62%).

Mostly agree

Now 73°23°

Sunny

Wind: 11 mph18 km/h; From the west. 610–11 mph18 km/h through 4 AM
Dew point: 49°9°; Comfortable · up to 70°21° by 5 PM (oppressive)
UV index: 3Moderate; Was high 11 AM–3 PM · peak 7
Air quality: 12Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.27 inHg1025 hPa; Steady over the last 3 h

None rain now, through the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (71°22° then, 73°23° now)

Good hours for

Rain for the next 48 hours (60%, 6.1 in154 mm)
Low 70°21° tonight at 3 AM

This afternoonNear 77°25° · Rain all afternoon (30%)
TonightDown to 70°21° by 3 AM · Rain all night (50%)
Tomorrow morningUp to 77°25° by 11 AM · Rain all morning (40%)
Tomorrow afternoonNear 77°25° · Rain all afternoon (50%)
Tomorrow nightDown to 70°21° by 3 AM · Rain all night (60%)
Monday morningUp to 76°24° by 11 AM · Rain all morning (60%)
Monday afternoonNear 77°25° · Rain all afternoon (40%)

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 4p	Showers	78°26° (likely 75°24° to 79°26°)	78°26°	30%, 0.09 in2.3 mm	8 mph13 km/h from NNE, gusts 19 mph31 km/h	76%	72%	3
Sat 5p	Showers	76°24° (likely 74°23° to 78°26°)	76°24°	30%, 0.09 in2.3 mm	8 mph13 km/h from N, gusts 18 mph30 km/h	81%	73%	1
Sat 6p	Showers	74°23° (likely 73°23° to 76°24°)	74°23°	50%, 0.13 in3.3 mm	8 mph13 km/h from N, gusts 21 mph33 km/h	87%	78%	0
Sat 7p	Showers	72°22° (likely 72°22° to 75°24°)	72°22°	50%, 0.13 in3.3 mm	8 mph13 km/h from N, gusts 19 mph31 km/h	92%	84%	0
Sat 8p	Drizzle	72°22° (likely 71°22° to 75°24°)	72°22°	50%, 0.13 in3.3 mm	7 mph11 km/h from NNW, gusts 18 mph29 km/h	95%	95%	0
Sat 9p	Showers	72°22° (likely 70°21° to 74°23°)	72°22°	50%, 0.13 in3.3 mm	7 mph11 km/h from NNW, gusts 18 mph28 km/h	95%	97%	0
Sat 10p	Showers	72°22° (likely 70°21° to 74°23°)	72°22°	50%, 0.13 in3.3 mm	7 mph11 km/h from NNW, gusts 18 mph29 km/h	95%	97%	0
Sat 11p	Showers	72°22° (likely 70°21° to 74°23°)	72°22°	50%, 0.13 in3.3 mm	6 mph10 km/h from NNW, gusts 18 mph28 km/h	95%	98%	0
Sun 12a	Showers	71°22° (likely 70°21° to 73°23°)	71°22°	50%, 0.11 in2.8 mm	6 mph10 km/h from NNW, gusts 17 mph28 km/h	95%	97%	0
Sun 1a	Showers	71°22° (likely 70°21° to 74°23°)	71°22°	50%, 0.11 in2.8 mm	6 mph10 km/h from NNW, gusts 18 mph29 km/h	95%	89%	0
Sun 2a	Showers	71°22° (likely 70°21° to 73°23°)	71°22°	50%, 0.11 in2.8 mm	6 mph10 km/h from NNW, gusts 18 mph29 km/h	94%	88%	0
Sun 3a	Showers	70°21° (likely 70°21° to 73°23°)	70°21°	50%, 0.11 in2.8 mm	6 mph10 km/h from NNW, gusts 18 mph29 km/h	93%	94%	0
Sun 4a	Showers	70°21° (likely 70°21° to 73°23°)	70°21°	50%, 0.11 in2.8 mm	6 mph10 km/h from NNW, gusts 18 mph30 km/h	91%	93%	0
Sun 5a	Showers	70°21° (likely 70°21° to 73°23°)	70°21°	50%, 0.11 in2.8 mm	8 mph13 km/h from N, gusts 17 mph28 km/h	90%	93%	0
Sun 6a	Showers	70°21° (likely 70°21° to 73°23°)	70°21°	40%, 0.1 in2.5 mm	8 mph13 km/h from N, gusts 16 mph26 km/h	92%	93%	0
Sun 7a	Cloudy	70°21° (likely 70°21° to 73°23°)	70°21°	40%, 0.1 in2.5 mm	8 mph13 km/h from N, gusts 16 mph27 km/h	94%	93%	0
Sun 8a	Showers	71°22° (likely 71°22° to 75°24°)	71°22°	40%, 0.1 in2.5 mm	8 mph13 km/h from N, gusts 18 mph29 km/h	93%	89%	1
Sun 9a	Showers	73°23° (likely 73°23° to 77°25°)	73°23°	40%, 0.1 in2.5 mm	8 mph13 km/h from N, gusts 18 mph29 km/h	88%	91%	2
Sun 10a	Showers	75°24° (likely 75°24° to 78°26°)	75°24°	40%, 0.1 in2.5 mm	8 mph13 km/h from N, gusts 18 mph30 km/h	82%	92%	3
Sun 11a	Showers	77°25° (likely 76°24° to 79°26°)	77°25°	40%, 0.1 in2.5 mm	10 mph16 km/h from N, gusts 17 mph28 km/h	77%	96%	6
Sun 12p	Drizzle	78°26° (likely 76°24° to 80°27°)	78°26°	50%, 0.13 in3.3 mm	10 mph16 km/h from N, gusts 17 mph28 km/h	74%	93%	7
Sun 1p	Drizzle	78°26° (likely 76°24° to 80°27°)	78°26°	50%, 0.13 in3.3 mm	10 mph16 km/h from N, gusts 18 mph29 km/h	74%	84%	6
Sun 2p	Showers	78°26° (likely 75°24° to 80°27°)	78°26°	50%, 0.13 in3.3 mm	10 mph16 km/h from N, gusts 17 mph28 km/h	74%	93%	6
Sun 3p	Drizzle	78°26° (likely 73°23° to 79°26°)	78°26°	50%, 0.13 in3.3 mm	10 mph16 km/h from N, gusts 18 mph28 km/h	74%	93%	4
Sun 4p	Drizzle	77°25° (likely 72°22° to 77°25°)	77°25°	50%, 0.13 in3.3 mm	10 mph16 km/h from N, gusts 17 mph27 km/h	76%	95%	3
Sun 5p	Drizzle	76°24° (likely 71°22° to 76°24°)	76°24°	50%, 0.13 in3.3 mm	7 mph11 km/h from N, gusts 16 mph26 km/h	80%	98%	1
Sun 6p	Drizzle	74°23° (likely 71°22° to 74°23°)	74°23°	60%, 0.15 in3.8 mm	7 mph11 km/h from N, gusts 18 mph30 km/h	86%	97%	0
Sun 7p	Showers	72°22° (likely 70°21° to 74°23°)	72°22°	60%, 0.15 in3.8 mm	7 mph11 km/h from N, gusts 17 mph27 km/h	92%	97%	0
Sun 8p	Drizzle	72°22° (likely 70°21° to 74°23°)	72°22°	60%, 0.15 in3.8 mm	7 mph11 km/h from N, gusts 15 mph24 km/h	95%	98%	0
Sun 9p	Showers	72°22° (likely 70°21° to 74°23°)	72°22°	60%, 0.15 in3.8 mm	7 mph11 km/h from N, gusts 15 mph24 km/h	94%	95%	0
Sun 10p	Showers	72°22° (likely 70°21° to 74°23°)	72°22°	60%, 0.15 in3.8 mm	7 mph11 km/h from N, gusts 13 mph21 km/h	93%	81%	0
Sun 11p	Showers	72°22° (likely 69°21° to 73°23°)	72°22°	60%, 0.15 in3.8 mm	3 mph5 km/h from NNW, gusts 12 mph20 km/h	92%	82%	0
Mon 12a	Showers	71°22° (likely 69°21° to 74°23°)	71°22°	60%, 0.14 in3.6 mm	3 mph5 km/h from NNW, gusts 9 mph15 km/h	92%	69%	0
Mon 1a	Showers	71°22° (likely 69°21° to 74°23°)	71°22°	60%, 0.14 in3.6 mm	3 mph5 km/h from NNW, gusts 8 mph13 km/h	93%	75%	0
Mon 2a	Showers	71°22° (likely 69°21° to 74°23°)	71°22°	60%, 0.14 in3.6 mm	3 mph5 km/h from NNW, gusts 8 mph12 km/h	94%	69%	0
Mon 3a	Showers	70°21° (likely 69°21° to 74°23°)	70°21°	60%, 0.14 in3.6 mm	3 mph5 km/h from NNW, gusts 8 mph13 km/h	93%	71%	0
Mon 4a	Showers	70°21° (likely 68°20° to 73°23°)	70°21°	60%, 0.14 in3.6 mm	3 mph5 km/h from NNW, gusts 8 mph13 km/h	91%	74%	0
Mon 5a	Drizzle	70°21° (likely 68°20° to 73°23°)	70°21°	60%, 0.14 in3.6 mm	5 mph8 km/h from NNE, gusts 9 mph14 km/h	90%	86%	0
Mon 6a	Drizzle	70°21° (likely 69°21° to 73°23°)	70°21°	60%, 0.14 in3.6 mm	5 mph8 km/h from NNE, gusts 8 mph13 km/h	91%	92%	0
Mon 7a	Drizzle	70°21° (likely 70°21° to 73°23°)	70°21°	60%, 0.14 in3.6 mm	5 mph8 km/h from NNE, gusts 8 mph13 km/h	94%	93%	0
Mon 8a	Drizzle	71°22° (likely 71°22° to 75°24°)	71°22°	60%, 0.14 in3.6 mm	5 mph8 km/h from NNE, gusts 9 mph14 km/h	94%	92%	1
Mon 9a	Showers	73°23° (likely 73°23° to 77°25°)	73°23°	60%, 0.14 in3.6 mm	5 mph8 km/h from NNE, gusts 10 mph16 km/h	90%	91%	3
Mon 10a	Showers	74°23° (likely 74°23° to 78°26°)	74°23°	60%, 0.14 in3.6 mm	5 mph8 km/h from NNE, gusts 11 mph17 km/h	85%	86%	4
Mon 11a	Showers	76°24° (likely 74°23° to 80°27°)	76°24°	60%, 0.14 in3.6 mm	7 mph11 km/h from ENE, gusts 11 mph18 km/h	81%	82%	6
Mon 12p	Showers	77°25° (likely 74°23° to 81°27°)	77°25°	40%, 0.12 in3 mm	7 mph11 km/h from ENE, gusts 11 mph18 km/h	79%	86%	5
Mon 1p	Showers	77°25° (likely 74°23° to 81°27°)	77°25°	40%, 0.12 in3 mm	7 mph11 km/h from ENE, gusts 11 mph18 km/h	79%	92%	6
Mon 2p	Showers	77°25° (likely 74°23° to 79°26°)	77°25°	40%, 0.12 in3 mm	7 mph11 km/h from ENE, gusts 11 mph18 km/h	79%	98%	5
Mon 3p	Showers	77°25° (likely 74°23° to 78°26°)	77°25°	40%, 0.12 in3 mm	7 mph11 km/h from ENE, gusts 10 mph16 km/h	79%	98%	3

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Showers. High 79°26°, low 70°21°. Typical 79°26° / 65°18°. Rain 0.07 in1.8 mm, 30% chance. Mostly agree.
1. Afternoon
  noon–6 PM
  Showers, 78°26°
  30% chance · 0.18 in4.6 mm
2. Evening
  6 PM–midnight
  Showers, 72°22°
  50% chance · 0.78 in20 mm
3. Overnight
  midnight–6 AM
  Showers, 70°21°
  50% chance · 0.66 in17 mm
Official NWS forecast
Today: Scattered rain showers. Partly sunny, with a high near 79. North wind around 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Tonight: Scattered rain showers. Cloudy, with a low around 70. North northwest wind around 8 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
79°26°–84°29°
Low, likely
70°21°–73°23°
Typical high / low
79°26° / 65°18°
Wind
13 mph22 km/h, gusts 37 mph59 km/h
UV peak
7
Tomorrow, Oct 25. Showers. High 78°26°, low 70°21°. Typical 79°26° / 65°18°. Rain 0.18 in4.6 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Showers, 71°22°
  40% chance · 0.6 in15 mm
2. Afternoon
  noon–6 PM
  Showers, 78°26°
  50% chance · 0.78 in20 mm
3. Evening
  6 PM–midnight
  Showers, 72°22°
  60% chance · 0.9 in23 mm
4. Overnight
  midnight–6 AM
  Showers, 70°21°
  60% chance · 0.84 in21 mm
Official NWS forecast
Day: Scattered rain showers. Mostly cloudy, with a high near 78. North wind 7 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Night: A chance of rain showers. Mostly cloudy, with a low around 70. North wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
76°24°–80°27°
Low, likely
69°21°–73°23°
Typical high / low
79°26° / 65°18°
Wind
12 mph19 km/h, gusts 34 mph55 km/h
UV peak
7
Monday, Oct 26. Showers. High 77°25°, low 71°22°. Typical 79°26° / 65°18°. Rain 0.37 in9.4 mm, 60% chance. Mostly agree.
1. Morning
  6 AM–noon
  Showers, 71°22°
  60% chance · 0.84 in21 mm
2. Afternoon
  noon–6 PM
  Rain, 77°25°
  80% chance · 0.55 in14 mm
3. Evening
  6 PM–midnight
  Drizzle, 73°23°
  80% chance · 0.1 in2.6 mm
4. Overnight
  midnight–6 AM
  Drizzle, 72°22°
  50% chance · 0.02 in0.6 mm
Official NWS forecast
Day: A chance of rain showers. Mostly cloudy, with a high near 77. East northeast wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Night: Occasional rain showers. Cloudy, with a low around 71. South southeast wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–81°27°
Low, likely
68°20°–73°23°
Typical high / low
79°26° / 65°18°
Wind
9 mph14 km/h, gusts 21 mph34 km/h
UV peak
6
Tuesday, Oct 27. Thunderstorms. High 78°26°, low 72°22°. Typical 78°26° / 65°18°. Storms 0.14 in3.6 mm, 100% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 75°24°
  60% chance
2. Afternoon
  noon–6 PM
  Cloudy, 80°27°
  80% chance · 0.01 in0.3 mm
3. Evening
  6 PM–midnight
  Cloudy, 75°24°
  80% chance · 0.11 in2.9 mm
4. Overnight
  midnight–6 AM
  Drizzle, 73°23°
  70% chance · 0.04 in1 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Occasional showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a high near 78. South wind 6 to 9 mph. Chance of precipitation is 100%.
Night: Occasional showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 72. South southwest wind around 8 mph. Chance of precipitation is 90%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
78°26°–83°28°
Low, likely
70°21°–72°22°
Typical high / low
78°26° / 65°18°
Wind
16 mph26 km/h, gusts 23 mph36 km/h
UV peak
7
Wednesday, Oct 28. Thunderstorms. High 78°26°, low 72°22°. Typical 78°26° / 65°18°. Storms 0.22 in5.6 mm, 90% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 75°24°
  60% chance · 0.03 in0.7 mm
2. Afternoon
  noon–6 PM
  Cloudy, 78°25°
  90% chance · 0.09 in2.3 mm
3. Evening
  6 PM–midnight
  Drizzle, 74°23°
  90% chance · 0.08 in2 mm
4. Overnight
  midnight–6 AM
  Drizzle, 73°23°
  60% chance · 0.1 in2.6 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Occasional showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a high near 78. South wind 1 to 8 mph. Chance of precipitation is 90%.
Night: Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 72. West northwest wind around 3 mph. Chance of precipitation is 80%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–81°27°
Low, likely
71°22°–73°23°
Typical high / low
78°26° / 65°18°
Wind
11 mph18 km/h, gusts 22 mph35 km/h
UV peak
4
Thursday, Oct 29. Thunderstorms. High 79°26°, low 72°22°. Typical 78°26° / 65°18°. Storms 0.58 in15 mm, 80% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 75°24°
  70% chance · 0.09 in2.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 78°25°
  90% chance · 0.16 in4 mm
3. Evening
  6 PM–midnight
  Cloudy, 74°23°
  90% chance · 0.24 in6 mm
4. Overnight
  midnight–6 AM
  Drizzle, 72°22°
  60% chance · 0.07 in1.8 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 79. North wind around 5 mph. Chance of precipitation is 80%.
Night: Showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 72. North wind around 6 mph. Chance of precipitation is 80%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
74°23°–81°27°
Low, likely
71°22°–74°23°
Typical high / low
78°26° / 65°18°
Wind
9 mph15 km/h, gusts 28 mph46 km/h
UV peak
7
Friday, Oct 30. Showers. High 79°26°, low 71°22°. Typical 78°26° / 65°18°. Rain 0.63 in16 mm, 60% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Drizzle, 74°23°
  60% chance · 0.11 in2.7 mm
2. Afternoon
  noon–6 PM
  Drizzle, 79°26°
  80% chance · 0.33 in8.3 mm
3. Evening
  6 PM–midnight
  Drizzle, 74°23°
  70% chance · 0.13 in3.2 mm
4. Overnight
  midnight–6 AM
  Drizzle, 73°23°
  60% chance · 0.15 in3.7 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain showers likely. Mostly cloudy, with a high near 79. North northeast wind around 8 mph. Chance of precipitation is 60%.
Night: Cloudy, with a low around 71. Northeast wind around 8 mph. Chance of precipitation is 50%.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
78°26°–80°27°
Low, likely
70°21°–74°23°
Typical high / low
78°26° / 65°18°
Wind
12 mph19 km/h
UV peak
6
Saturday, Oct 31. Drizzle. High 78°26°, low 72°22°. Typical 78°26° / 65°18°. Rain 0.65 in17 mm, 60% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 75°24°
  50% chance · 0.19 in4.9 mm
2. Afternoon
  noon–6 PM
  Drizzle, 78°25°
  50% chance · 0.12 in3.1 mm
3. Evening
  6 PM–midnight
  Drizzle, 74°23°
  50% chance · 0.08 in2.1 mm
4. Overnight
  midnight–6 AM
  Drizzle, 72°22°
  40% chance · 0.01 in0.3 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–81°27°
Low, likely
69°21°–73°23°
Typical high / low
78°26° / 65°18°
Wind
9 mph14 km/h, gusts 15 mph24 km/h
UV peak
5
Sunday, Nov 1. Drizzle. High 78°26°, low 71°22°. Typical 78°26° / 65°18°. Rain 0.2 in5.1 mm, 60% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 75°24°
  50% chance · 0.08 in1.9 mm
2. Afternoon
  noon–6 PM
  Drizzle, 78°26°
  60% chance · 0.08 in2 mm
3. Evening
  6 PM–midnight
  Drizzle, 73°23°
  50% chance · 0.07 in1.8 mm
4. Overnight
  midnight–6 AM
  Drizzle, 72°22°
  50% chance · 0.05 in1.2 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–81°27°
Low, likely
70°21°–71°22°
Typical high / low
78°26° / 65°18°
Wind
10 mph17 km/h, gusts 17 mph28 km/h
UV peak
7
Monday, Nov 2. Drizzle. High 78°26°, low 71°22°. Typical 78°26° / 65°18°. Rain 0.16 in4.1 mm, 60% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 73°23°
  50% chance · 0.06 in1.4 mm
2. Afternoon
  noon–6 PM
  Partly sunny, 78°25°
  50% chance · 0.02 in0.6 mm
3. Evening
  6 PM–midnight
  Partly cloudy, 72°22°
  50% chance · 0.05 in1.4 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–81°27°
Low, likely
69°21°–72°22°
Typical high / low
78°26° / 65°18°
Wind
15 mph23 km/h, gusts 29 mph47 km/h
UV peak
7

10 days15 days30 days

The outlook

Today
33% chance of rain, high 79°, low 70°.
Tomorrow
48% chance of rain, high 78°, low 70°.
Monday
55% chance of rain, high 77°, low 71°.
Rest of week
Highs 78–79°; chance of precipitation on Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday, Monday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (HFO) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Wailuku River at Piihonoua

20 mi

Below flood stage

Level: 0.9 ft
Flow: 1 cfs

Reading from Sat 2:50 PM · NWS gauge page

Honolii Stream near Papaikou

23 mi

Below flood stage

Level: 2.8 ft
Flow: 45 cfs

Reading from Sat 2:55 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Cooling this week

About 66% less cooling than a typical week.

This week 16Typical 47

Cooling degree days, base 65°F

Comfort

Dry air outside (dew point 49°F).

Open the windows?

No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.

Is this typical?

Hilo 5 S · official normals 1991–2020 · records 2005–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

On average 0° colder than normal (daily mean temperature).

±0°MonOct 19
+2°+1°TueOct 20
±0°WedOct 21
−1°ThuOct 22
−1°FriOct 23
±0°SatOct 24
—SunOct 25

Pahoa weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 11 h 33 min; Losing 1 min 1 s a day; shortest Dec 21, 35 min less
Golden hour: 5:20–6:03 PM; Morning 6:03–6:47 AM
Blue hour: 6:03–6:12 PM; Morning 5:55–6:03 AM; first light 5:55 AM

Stars tonight? Poor

Clouds most of the night (about 92% cover).

Moon

Waxing gibbous

98% lit · growing

Today: sets 4:51 AM · rises 4:50 PM
Full moon: Oct 25
New moon: Nov 8

Looking west from Pahoa. The highest point on the skyline is about 13,800 ft, 41 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Hydrologic Outlook