Observed 9:40 PM PDT at KSBD

Rialto, CA weather

Clear and 61°16°, 14°8° colder than a typical Oct 23.

Forecasts agree

Now 61°16°

Clear

Wind: 3 mph5 km/h; From the east. 35–10 mph16 km/h through 10 AM
Dew point: 49°9°; Comfortable
UV tomorrow: 6High; High 1–2 PM · peak 6
Air quality: 24Good; Main pollutant: PM2.5 (fine particles)
Pressure: 29.95 inHg1014 hPa; Rising slowly · +0.03 inHg+0.8 hPa in 3 h

None rain now, through the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 56°13° tonight at 3 AM
Above 70°21° tomorrow by noon
High 76°24° tomorrow at 4 PM
Below 70°21° tomorrow night after 8 PM

TonightDown to 56°13° by 3 AM · rain chance 10% · Clear
Tomorrow morningUp to 69°21° by 11 AM · Clear
Tomorrow afternoonUp to 76°24° by 4 PM · Clear
Tomorrow nightDown to 57°14° by 3 AM · Clear
Sunday morningUp to 73°23° by 11 AM · Clear
Sunday afternoonNear 77°25° · Clear
Sunday nightDown to 66°19° by 9 PM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Fri 10p	Clear	61°16° (likely 54°12° to 61°16°)	61°16°	10%	5 mph8 km/h from W, gusts 6 mph9 km/h	78%	10%	0
Fri 11p	Clear	60°16° (likely 53°12° to 60°16°)	60°16°	0%	5 mph8 km/h from NW, gusts 4 mph6 km/h	76%	2%	0
Sat 12a	Clear	59°15° (likely 52°11° to 59°15°)	59°15°	0%	5 mph8 km/h from NW, gusts 4 mph7 km/h	76%	0%	0
Sat 1a	Clear	57°14° (likely 51°11° to 57°14°)	57°14°	0%	5 mph8 km/h from NW, gusts 2 mph4 km/h	79%	0%	0
Sat 2a	Clear	57°14° (likely 50°10° to 57°14°)	57°14°	0%	5 mph8 km/h from N, gusts 3 mph5 km/h	78%	0%	0
Sat 3a	Clear	56°13° (likely 49°9° to 56°13°)	56°13°	0%	10 mph16 km/h from N, gusts 3 mph5 km/h	77%	0%	0
Sat 4a	Clear	56°13° (likely 49°9° to 56°13°)	56°13°	0%	10 mph16 km/h from N, gusts 7 mph11 km/h	78%	0%	0
Sat 5a	Clear	56°13° (likely 48°9° to 57°14°)	56°13°	0%	10 mph16 km/h from N, gusts 9 mph14 km/h	75%	0%	0
Sat 6a	Clear	56°13° (likely 48°9° to 57°14°)	56°13°	0%	10 mph16 km/h from N, gusts 11 mph18 km/h	73%	0%	0
Sat 7a	Sunny	56°13° (likely 48°9° to 57°14°)	56°13°	0%	10 mph16 km/h from N, gusts 11 mph18 km/h	73%	0%	0
Sat 8a	Sunny	58°14° (likely 49°9° to 59°15°)	58°14°	0%	10 mph16 km/h from N, gusts 12 mph19 km/h	72%	0%	0
Sat 9a	Sunny	62°17° (likely 53°12° to 63°17°)	62°17°	0%	10 mph16 km/h from N, gusts 15 mph24 km/h	65%	1%	1
Sat 10a	Sunny	65°18° (likely 60°16° to 67°19°)	65°18°	0%	10 mph16 km/h from N, gusts 15 mph24 km/h	56%	0%	3
Sat 11a	Sunny	69°21° (likely 65°18° to 71°22°)	69°21°	0%	15 mph24 km/h from N, gusts 17 mph27 km/h	49%	0%	4
Sat 12p	Sunny	71°22° (likely 68°20° to 74°23°)	71°22°	0%	15 mph24 km/h from N, gusts 19 mph30 km/h	43%	0%	5
Sat 1p	Sunny	74°23° (likely 69°21° to 75°24°)	74°23°	0%	15 mph24 km/h from N, gusts 18 mph29 km/h	38%	0%	6
Sat 2p	Sunny	75°24° (likely 71°22° to 76°24°)	75°24°	0%	10 mph16 km/h from N, gusts 15 mph24 km/h	36%	0%	5
Sat 3p	Sunny	75°24° (likely 71°22° to 77°25°)	75°24°	0%	10 mph16 km/h from N, gusts 13 mph21 km/h	35%	0%	4
Sat 4p	Sunny	76°24° (likely 70°21° to 77°25°)	76°24°	0%	10 mph16 km/h from N, gusts 13 mph20 km/h	35%	0%	3
Sat 5p	Sunny	75°24° (likely 69°21° to 76°24°)	75°24°	0%	5 mph8 km/h from N, gusts 11 mph18 km/h	38%	0%	2
Sat 6p	Clear	72°22° (likely 66°19° to 72°22°)	72°22°	0%	5 mph8 km/h from W, gusts 12 mph20 km/h	42%	0%	0
Sat 7p	Clear	70°21° (likely 63°17° to 70°21°)	70°21°	0%	5 mph8 km/h from W, gusts 13 mph21 km/h	46%	0%	0
Sat 8p	Clear	66°19° (likely 60°16° to 66°19°)	66°19°	0%	5 mph8 km/h from W, gusts 12 mph20 km/h	53%	0%	0
Sat 9p	Clear	64°18° (likely 58°14° to 64°18°)	64°18°	0%	5 mph8 km/h from N, gusts 5 mph9 km/h	55%	0%	0
Sat 10p	Clear	63°17° (likely 56°13° to 63°17°)	63°17°	0%	5 mph8 km/h from NE, gusts 4 mph7 km/h	55%	0%	0
Sat 11p	Clear	62°17° (likely 54°12° to 62°17°)	62°17°	0%	5 mph8 km/h from N, gusts 4 mph7 km/h	57%	0%	0
Sun 12a	Clear	60°16° (likely 53°12° to 60°16°)	60°16°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	57%	0%	0
Sun 1a	Clear	59°15° (likely 52°11° to 59°15°)	59°15°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	59%	0%	0
Sun 2a	Clear	58°14° (likely 51°11° to 58°14°)	58°14°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	59%	0%	0
Sun 3a	Clear	57°14° (likely 50°10° to 57°14°)	57°14°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	60%	0%	0
Sun 4a	Clear	57°14° (likely 49°9° to 57°14°)	57°14°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	58%	0%	0
Sun 5a	Clear	57°14° (likely 49°9° to 57°14°)	57°14°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	57%	0%	0
Sun 6a	Clear	56°13° (likely 48°9° to 56°13°)	56°13°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	58%	0%	0
Sun 7a	Sunny	56°13° (likely 48°9° to 56°13°)	57°14°	0%	5 mph8 km/h from N, gusts 4 mph7 km/h	59%	0%	0
Sun 8a	Sunny	58°14° (likely 49°9° to 58°14°)	58°14°	0%	5 mph8 km/h from N, gusts 4 mph7 km/h	58%	0%	0
Sun 9a	Sunny	62°17° (likely 53°12° to 62°17°)	63°17°	0%	5 mph8 km/h from N, gusts 3 mph6 km/h	52%	0%	1
Sun 10a	Sunny	68°20° (likely 59°15° to 68°20°)	68°20°	0%	0 mph0 km/h, gusts 3 mph5 km/h	44%	0%	3
Sun 11a	Sunny	73°23° (likely 64°18° to 73°23°)	73°23°	0%	0 mph0 km/h, gusts 3 mph5 km/h	38%	0%	4
Sun 12p	Sunny	76°24° (likely 68°20° to 76°24°)	76°24°	0%	0 mph0 km/h, gusts 3 mph5 km/h	34%	0%	5
Sun 1p	Sunny	78°26° (likely 70°21° to 78°26°)	78°26°	0%	0 mph0 km/h, gusts 4 mph7 km/h	32%	0%	5
Sun 2p	Sunny	78°26° (likely 72°22° to 78°26°)	78°26°	0%	5 mph8 km/h from SW, gusts 6 mph9 km/h	31%	40%	5
Sun 3p	Sunny	79°26° (likely 73°23° to 79°26°)	79°26°	0%	5 mph8 km/h from SW, gusts 6 mph10 km/h	31%	36%	4
Sun 4p	Sunny	78°26° (likely 73°23° to 78°26°)	78°26°	0%	5 mph8 km/h from SW, gusts 7 mph11 km/h	33%	32%	3
Sun 5p	Sunny	77°25° (likely 72°22° to 77°25°)	77°25°	0%	5 mph8 km/h from W, gusts 7 mph12 km/h	35%	29%	1
Sun 6p	Clear	74°23° (likely 66°19° to 76°24°)	75°24°	0%	5 mph8 km/h from W, gusts 8 mph12 km/h	38%	4%	0
Sun 7p	Clear	71°22° (likely 61°16° to 74°23°)	71°22°	0%	5 mph8 km/h from W, gusts 8 mph12 km/h	42%	3%	0
Sun 8p	Clear	68°20° (likely 58°14° to 72°22°)	68°20°	0%	0 mph0 km/h, gusts 6 mph10 km/h	46%	3%	0
Sun 9p	Mostly clear	66°19° (likely 55°13° to 71°22°)	67°19°	0%	5 mph8 km/h from NW, gusts 5 mph8 km/h	48%	32%	0

Days ahead

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

Today, Oct 23. Drizzle. High 67°19°, low 56°13°. Typical 81°27° / 54°12°. Rain 0.07 in1.8 mm, 60% chance. Forecasts agree.
1. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 56°13°
  Dry
Official NWS forecast
Tonight: Mostly clear, with a low around 56. Northwest wind 5 to 10 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
66°19°–68°20°
Low, likely
53°12°–57°14°
Typical high / low
81°27° / 54°12°
Wind
7 mph11 km/h, gusts 17 mph27 km/h
UV peak
5
Tomorrow, Oct 24. Sunny. High 76°24°, low 56°13°. Typical 81°27° / 53°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 58°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 66°19°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 57°14°
  Dry
Official NWS forecast
Day: Sunny, with a high near 76. North wind 5 to 15 mph, with gusts as high as 25 mph.
Night: Mostly clear, with a low around 56. North wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
71°22°–77°25°
Low, likely
48°9°–56°13°
Typical high / low
81°27° / 53°12°
Wind
15 mph24 km/h, gusts 27 mph44 km/h
UV peak
6
Sunday, Oct 25. Mostly sunny. High 79°26°, low 58°14°. Typical 81°27° / 53°12°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 58°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 68°20°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 55°13°
  Dry
Official NWS forecast
Day: Sunny, with a high near 79. Northwest wind 0 to 5 mph.
Night: Mostly clear, with a low around 58. Northwest wind 0 to 10 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
73°23°–79°26°
Low, likely
47°8°–58°14°
Typical high / low
81°27° / 53°12°
Wind
7 mph11 km/h, gusts 13 mph21 km/h
UV peak
5
Monday, Oct 26. Mostly sunny. High 80°27°, low 58°14°. Typical 80°27° / 53°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 53°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 80.
Night: Mostly clear, with a low around 58.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–80°27°
Low, likely
48°9°–61°16°
Typical high / low
80°27° / 53°12°
Wind
9 mph15 km/h
UV peak
5
Tuesday, Oct 27. Mostly sunny. High 79°26°, low 57°14°. Typical 80°27° / 52°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 79.
Night: Partly cloudy, with a low around 57.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–79°26°
Low, likely
46°8°–58°14°
Typical high / low
80°27° / 52°11°
Wind
5 mph8 km/h, gusts 12 mph19 km/h
UV peak
5
Wednesday, Oct 28. Cloudy. High 78°26°, low 57°14°. Typical 80°27° / 52°11°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 78.
Night: Mostly cloudy, with a low around 57.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
70°21°–78°26°
Low, likely
47°8°–57°14°
Typical high / low
80°27° / 52°11°
Wind
5 mph8 km/h, gusts 11 mph18 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 74°23°, low 57°14°. Typical 80°27° / 52°11°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 57°14°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 74.
Night: Mostly cloudy, with a low around 57.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
68°20°–74°23°
Low, likely
50°10°–59°15°
Typical high / low
80°27° / 52°11°
Wind
7 mph11 km/h, gusts 17 mph27 km/h
UV peak
4
Friday, Oct 30. Showers. High 71°22°, low 56°13°. Typical 80°27° / 52°11°. Rain 0.15 in3.8 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  20% chance · 0.04 in0.9 mm
2. Afternoon
  noon–6 PM
  Mostly sunny, 66°19°
  30% chance · 0.04 in0.9 mm
3. Evening
  6 PM–midnight
  Partly cloudy, 61°16°
  30% chance · 0.08 in1.9 mm
4. Overnight
  midnight–6 AM
  Cloudy, 57°14°
  40% chance · 0.08 in2 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers after 11am. Mostly sunny, with a high near 71.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–71°22°
Low, likely
52°11°–59°15°
Typical high / low
80°27° / 52°11°
Wind
10 mph16 km/h, gusts 16 mph26 km/h
UV peak
5
Saturday, Oct 31. Cloudy. High 65°18°, low 55°13°. Typical 79°26° / 51°11°. Rain 0.31 in7.9 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 58°14°
  30% chance · 0.04 in0.9 mm
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  40% chance · 0.13 in3.4 mm
3. Evening
  6 PM–midnight
  Mostly clear, 60°16°
  40% chance · 0.02 in0.6 mm
4. Overnight
  midnight–6 AM
  Mostly clear, 55°13°
  50% chance
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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–73°23°
Low, likely
52°11°–60°16°
Typical high / low
79°26° / 51°11°
Wind
9 mph14 km/h, gusts 20 mph33 km/h
UV peak
5
Sunday, Nov 1. Cloudy. High 71°22°, low 54°12°. Typical 79°26° / 51°11°. Rain 0.12 in3 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 57°14°
  50% chance
2. Afternoon
  noon–6 PM
  Partly sunny, 72°22°
  40% chance
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  40% chance · 0.13 in3.2 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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–81°27°
Low, likely
47°8°–63°17°
Typical high / low
79°26° / 51°11°
Wind
6 mph10 km/h
UV peak
5

10 days15 days30 days

The outlook

Today
60% chance of rain, high 67°, low 56°.
Tomorrow
Dry, high 76°, low 56°, warming up.
Sunday
Dry, high 79°, low 58°, warming up.
Rest of week
Mostly dry, highs 65–80°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (SGX) (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

Lytle Creek near Colton

5.5 mi

Level: 2.1 ft
Flow: 8 cfs

Reading from Fri 8:15 PM · NWS gauge page

Santa Ana River at E St near San Bernardino

6.2 mi

Level: 2.8 ft
Flow: 17 cfs

Reading from Fri 8 PM · NWS gauge page

San Timoteo Creek near Loma Linda

8.0 mi

Level: 1.0 ft
Flow: 10 cfs

Reading from Fri 8:30 PM · NWS gauge page

Santa Ana River at MWD Crossing near Arlington

11 mi

Level: 4.0 ft
Flow: 81 cfs

Reading from Fri 9 PM · NWS gauge page

For your home

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

Cooling this week

About 32% less cooling than a typical week.

This week 8Typical 11

Cooling degree days, base 65°F

Comfort

Dry air outside (dew point 49°F).

Open the windows?

Sat, 9:00 AM–12:00 AM

Good stretch to open the windows (air quality forecast not available for part of this window).

Is this typical?

Riverside Municipal Airport · official normals 1991–2020 · records 1998–2026

Oct 23, today vs a typical year

Today’s expected high is 14°8° colder than typical.

Last 7 days vs normal

On average 4°2° warmer than normal (daily mean temperature).

+10°+6°SatOct 17
+5°+3°SunOct 18
+6°+3°MonOct 19
+5°+3°TueOct 20
+2°+1°WedOct 21
−6°−3°ThuOct 22
—FriOct 23

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

Sun & moon

Sun

Daylight: 11 h 4 min; Losing 1 min 57 s a day; shortest Dec 21, 1 h 11 min less
Golden hour: 5:31–6:21 PM; Morning 6:45–7:35 AM
Blue hour: 6:21–6:31 PM; Morning 6:36–6:45 AM; first light 6:36 AM

Stars tonight? Good

Clear 10:21 PM–6:36 AM; moon 96% lit, sets 5:24 AM.

Moon

Waxing gibbous

95% lit · growing

Today: sets 4:20 AM · rises 4:34 PM
Full moon: Oct 25
New moon: Nov 8

Looking east from Rialto. The highest point on the skyline is about 11,400 ft, 32 mi away.Skyline from USGS elevation data, heights drawn up to 4.5× taller. Sky, sun and moon as they are now.