Model estimate for 12:00 AM PDT (no recent station report)

San Dimas, CA weather

Clear and 59°15°, 8°4° colder than a typical Oct 24, jacket by 6 AM.

Forecasts differ

Now 59°15°

Clear

Wind: Calm; Up to 5 mph8 km/h through 12 PM
Dew point: 57°14°; A little sticky
Humidity: 92%; Air 59°15°, dew point 57°14° · fog or dew likely
UV index: 0Low; Moderate 10 AM–5 PM · peak 5
Air today: 46Good; EPA forecast · Ozone

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 54°12° tonight at 4 AM
Above 60°16° today by 9 AM
High 75°24° today at 3 PM

TonightDown to 54°12° by 4 AM · Clear
This morningUp to 66°19° by 11 AM · Clear
This afternoonUp to 75°24° by 3 PM · Clear
TonightDown to 55°13° by 4 AM · Clear
Tomorrow morningUp to 70°21° by 11 AM · Clear
Tomorrow afternoonUp to 79°26° by 3 PM · Partly cloudy
Tomorrow nightDown to 67°19° by 11 PM · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 12a	Clear	59°15° (likely 53°12° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 3 mph5 km/h	92%	1%	0
Sat 1a	Clear	57°14° (likely 52°11° to 58°14°)	57°14°	0%	0 mph0 km/h, gusts 4 mph6 km/h	91%	5%	0
Sat 2a	Clear	59°15° (likely 52°11° to 59°15°)	59°15°	0%	5 mph8 km/h from NNE, gusts 4 mph7 km/h	95%	0%	0
Sat 3a	Clear	57°14° (likely 52°11° to 58°14°)	57°14°	0%	5 mph8 km/h from NNE, gusts 4 mph6 km/h	94%	0%	0
Sat 4a	Clear	54°12° (likely 52°11° to 57°14°)	54°12°	0%	5 mph8 km/h from NNE, gusts 5 mph8 km/h	94%	0%	0
Sat 5a	Clear	57°14° (likely 52°11° to 57°14°)	57°14°	0%	5 mph8 km/h from NNE, gusts 4 mph6 km/h	92%	0%	0
Sat 6a	Clear	54°12° (likely 51°11° to 55°13°)	54°12°	0%	5 mph8 km/h from NNE, gusts 6 mph9 km/h	89%	0%	0
Sat 7a	Sunny	54°12° (likely 50°10° to 56°13°)	54°12°	0%	5 mph8 km/h from NNE, gusts 5 mph8 km/h	90%	0%	0
Sat 8a	Sunny	57°14° (likely 52°11° to 57°14°)	57°14°	0%	5 mph8 km/h from NNE, gusts 6 mph9 km/h	88%	0%	0
Sat 9a	Sunny	60°16° (likely 58°14° to 62°17°)	60°16°	0%	5 mph8 km/h from NNE, gusts 4 mph7 km/h	79%	0%	1
Sat 10a	Sunny	63°17° (likely 62°17° to 65°18°)	63°17°	0%	5 mph8 km/h from NNE, gusts 5 mph8 km/h	69%	0%	3
Sat 11a	Sunny	66°19° (likely 65°18° to 68°20°)	66°19°	0%	5 mph8 km/h from N, gusts 7 mph10 km/h	62%	1%	4
Sat 12p	Sunny	69°21° (likely 67°19° to 71°22°)	69°21°	0%	5 mph8 km/h from N, gusts 7 mph10 km/h	55%	1%	5
Sat 1p	Sunny	72°22° (likely 69°21° to 73°23°)	72°22°	0%	5 mph8 km/h from N, gusts 7 mph11 km/h	53%	1%	5
Sat 2p	Sunny	74°23° (likely 70°21° to 76°24°)	74°23°	0%	5 mph8 km/h from WNW, gusts 7 mph11 km/h	50%	2%	5
Sat 3p	Sunny	75°24° (likely 71°22° to 77°25°)	75°24°	0%	5 mph8 km/h from WNW, gusts 7 mph11 km/h	48%	1%	4
Sat 4p	Sunny	75°24° (likely 71°22° to 77°25°)	75°24°	0%	5 mph8 km/h from WNW, gusts 7 mph12 km/h	49%	1%	3
Sat 5p	Sunny	73°23° (likely 70°21° to 76°24°)	73°23°	0%	5 mph8 km/h from NNW, gusts 7 mph11 km/h	48%	0%	2
Sat 6p	Clear	68°20° (likely 66°19° to 73°23°)	68°20°	0%	5 mph8 km/h from NNW, gusts 11 mph17 km/h	56%	0%	0
Sat 7p	Clear	65°18° (likely 63°17° to 68°20°)	65°18°	0%	5 mph8 km/h from NNW, gusts 8 mph14 km/h	60%	0%	0
Sat 8p	Clear	65°18° (likely 61°16° to 65°18°)	65°18°	0%	5 mph8 km/h from NNW, gusts 6 mph10 km/h	65%	0%	0
Sat 9p	Clear	63°17° (likely 59°15° to 63°17°)	63°17°	0%	5 mph8 km/h from NNW, gusts 6 mph9 km/h	69%	0%	0
Sat 10p	Clear	62°17° (likely 58°14° to 62°17°)	62°17°	0%	5 mph8 km/h from NNW, gusts 6 mph10 km/h	73%	0%	0
Sat 11p	Clear	62°17° (likely 57°14° to 62°17°)	62°17°	0%	5 mph8 km/h from NE, gusts 6 mph9 km/h	73%	0%	0
Sun 12a	Clear	60°16° (likely 56°13° to 60°16°)	60°16°	0%	5 mph8 km/h from NE, gusts 8 mph12 km/h	70%	0%	0
Sun 1a	Clear	58°14° (likely 56°13° to 58°14°)	58°14°	0%	5 mph8 km/h from NE, gusts 11 mph17 km/h	70%	0%	0
Sun 2a	Clear	58°14° (likely 55°13° to 58°14°)	58°14°	0%	5 mph8 km/h from NNE, gusts 11 mph17 km/h	72%	0%	0
Sun 3a	Clear	57°14° (likely 55°13° to 57°14°)	57°14°	0%	5 mph8 km/h from NNE, gusts 9 mph15 km/h	71%	0%	0
Sun 4a	Clear	55°13° (likely 55°13° to 57°14°)	55°13°	0%	5 mph8 km/h from NNE, gusts 8 mph12 km/h	71%	0%	0
Sun 5a	Clear	57°14° (likely 55°13° to 58°14°)	57°14°	0%	5 mph8 km/h from NNE, gusts 7 mph11 km/h	69%	0%	0
Sun 6a	Clear	55°13° (likely 54°12° to 57°14°)	55°13°	0%	5 mph8 km/h from NNE, gusts 6 mph10 km/h	69%	0%	0
Sun 7a	Sunny	55°13° (likely 54°12° to 57°14°)	55°13°	0%	5 mph8 km/h from NNE, gusts 5 mph9 km/h	69%	0%	0
Sun 8a	Sunny	58°14° (likely 56°13° to 58°14°)	58°14°	0%	5 mph8 km/h from NE, gusts 5 mph8 km/h	69%	0%	0
Sun 9a	Sunny	62°17° (likely 61°16° to 64°18°)	62°17°	0%	5 mph8 km/h from NE, gusts 4 mph6 km/h	65%	0%	1
Sun 10a	Sunny	65°18° (likely 65°18° to 69°21°)	65°18°	0%	5 mph8 km/h from NE, gusts 3 mph5 km/h	56%	0%	3
Sun 11a	Sunny	70°21° (likely 69°21° to 71°22°)	70°21°	0%	5 mph8 km/h from SSW, gusts 3 mph5 km/h	50%	0%	4
Sun 12p	Sunny	72°22° (likely 72°22° to 74°23°)	72°22°	0%	5 mph8 km/h from SSW, gusts 3 mph5 km/h	44%	0%	5
Sun 1p	Sunny	76°24° (likely 74°23° to 77°25°)	76°24°	0%	5 mph8 km/h from SSW, gusts 5 mph8 km/h	41%	40%	5
Sun 2p	Sunny	77°25° (likely 75°24° to 79°26°)	77°25°	0%	5 mph8 km/h from W, gusts 5 mph8 km/h	39%	40%	5
Sun 3p	Sunny	79°26° (likely 76°24° to 80°27°)	79°26°	0%	5 mph8 km/h from W, gusts 6 mph10 km/h	38%	36%	4
Sun 4p	Sunny	79°26° (likely 75°24° to 79°26°)	79°26°	0%	5 mph8 km/h from W, gusts 7 mph12 km/h	39%	31%	3
Sun 5p	Sunny	78°26° (likely 74°23° to 78°26°)	78°26°	0%	0 mph0 km/h, gusts 7 mph11 km/h	40%	41%	1
Sun 6p	Clear	74°23° (likely 68°20° to 75°24°)	74°23°	0%	0 mph0 km/h, gusts 7 mph11 km/h	47%	26%	0
Sun 7p	Clear	71°22° (likely 63°17° to 74°23°)	71°22°	0%	0 mph0 km/h, gusts 7 mph11 km/h	54%	25%	0
Sun 8p	Clear	70°21° (likely 61°16° to 72°22°)	70°21°	0%	5 mph8 km/h from N, gusts 6 mph9 km/h	58%	25%	0
Sun 9p	Mostly clear	69°21° (likely 60°16° to 71°22°)	69°21°	0%	5 mph8 km/h from N, gusts 6 mph9 km/h	62%	41%	0
Sun 10p	Mostly clear	69°21° (likely 60°16° to 70°21°)	69°21°	0%	5 mph8 km/h from N, gusts 6 mph9 km/h	66%	52%	0
Sun 11p	Mostly clear	67°19° (likely 59°15° to 70°21°)	67°19°	0%	5 mph8 km/h from N, gusts 5 mph9 km/h	68%	50%	0

Days ahead

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

Today, Oct 24. Mostly sunny. High 75°24°, low 54°12°. Typical 83°28° / 51°11°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 55°13°
  Dry
Official NWS forecast
Today: Sunny, with a high near 75. North wind around 5 mph.
Tonight: Mostly clear, with a low around 54. North northeast wind 0 to 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
71°22°–77°25°
Low, likely
50°10°–55°13°
Typical high / low
83°28° / 51°11°
Wind
8 mph13 km/h, gusts 15 mph24 km/h
UV peak
5
Tomorrow, Oct 25. Mostly sunny. High 79°26°, low 57°14°. Typical 83°28° / 51°11°. Dry. Mostly agree.
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, 70°21°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 59°15°
  Dry
Official NWS forecast
Day: Sunny, with a high near 79. Northwest wind 0 to 5 mph.
Night: Mostly clear, with a low around 57. North wind 0 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–79°26°
Low, likely
54°12°–57°14°
Typical high / low
83°28° / 51°11°
Wind
8 mph13 km/h, gusts 15 mph24 km/h
UV peak
5
Monday, Oct 26. Mostly sunny. High 79°26°, low 57°14°. Typical 83°28° / 51°11°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 60°15°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 78°26°
  Dry
3. Evening
  6 PM–midnight
  Clear, 66°19°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 56°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 79.
Night: Mostly clear, with a low around 57.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
77°25°–79°26°
Low, likely
55°13°–62°17°
Typical high / low
83°28° / 51°11°
Wind
10 mph16 km/h, gusts 15 mph24 km/h
UV peak
5
Tuesday, Oct 27. Mostly sunny. High 79°26°, low 58°14°. Typical 82°28° / 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  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 58.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
73°23°–79°26°
Low, likely
51°11°–60°16°
Typical high / low
82°28° / 50°10°
Wind
10 mph16 km/h
UV peak
5
Wednesday, Oct 28. Cloudy. High 79°26°, low 58°14°. Typical 82°28° / 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 56°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 79.
Night: Mostly cloudy, with a low around 58.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
72°22°–79°26°
Low, likely
50°10°–60°16°
Typical high / low
82°28° / 50°10°
Wind
7 mph11 km/h, gusts 13 mph21 km/h
UV peak
5
Thursday, Oct 29. Cloudy. High 73°23°, low 56°13°. Typical 82°28° / 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 71°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 59°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 73.
Night: A chance of rain showers after 11pm. Mostly cloudy, with a low around 56.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–73°23°
Low, likely
51°11°–61°16°
Typical high / low
82°28° / 50°10°
Wind
9 mph14 km/h, gusts 21 mph33 km/h
UV peak
4
Friday, Oct 30. Showers. High 70°21°, low 57°14°. Typical 82°28° / 50°10°. Rain 0.13 in3.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  30% chance · 0.02 in0.5 mm
3. Evening
  6 PM–midnight
  Clear, 62°17°
  30% chance · 0.04 in1.1 mm
4. Overnight
  midnight–6 AM
  Partly cloudy, 57°14°
  30% chance · 0.13 in3.3 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Partly sunny, with a high near 70.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–70°21°
Low, likely
53°12°–61°16°
Typical high / low
82°28° / 50°10°
Wind
9 mph14 km/h, gusts 21 mph33 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 66°19°, low 55°13°. Typical 82°28° / 49°9°. Rain 0.29 in7.4 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  30% chance · 0.08 in2.1 mm
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  40% chance · 0.08 in2.1 mm
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  40% chance · 0.02 in0.6 mm
4. Overnight
  midnight–6 AM
  Mostly clear, 56°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
62°17°–70°21°
Low, likely
49°9°–62°17°
Typical high / low
82°28° / 49°9°
Wind
8 mph13 km/h, gusts 21 mph34 km/h
UV peak
3
Sunday, Nov 1. Drizzle. High 71°22°, low 54°12°. Typical 81°27° / 49°9°. Rain 0.15 in3.8 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 58°14°
  40% chance
2. Afternoon
  noon–6 PM
  Cloudy, 71°22°
  40% chance
3. Evening
  6 PM–midnight
  Showers, 62°17°
  40% chance · 0.21 in5.4 mm
4. Overnight
  midnight–6 AM
  Showers, 56°13°
  30% chance · 0.06 in1.5 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
67°19°–77°25°
Low, likely
46°8°–63°17°
Typical high / low
81°27° / 49°9°
Wind
9 mph15 km/h
UV peak
4
Monday, Nov 2. Showers. High 72°22°, low 57°14°. Typical 81°27° / 49°9°. Rain 0.18 in4.6 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 61°16°
  20% chance
2. Afternoon
  noon–6 PM
  Sunny, 73°23°
  20% chance
3. Evening
  6 PM–midnight
  Clear, 65°18°
  Dry
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
69°21°–74°23°
Low, likely
54°12°–65°18°
Typical high / low
81°27° / 49°9°
Wind
9 mph14 km/h
UV peak
5

10 days15 days30 days

The outlook

Today
Dry, high 75°, low 54°.
Tomorrow
Dry, high 79°, low 57°, warming up.
Monday
Dry, high 79°, low 57°.
Rest of week
Highs 66–79°; chance of precipitation on Sunday.

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

Puddingstone Dam

1.2 mi

Level: 0.2 ft

Reading from Fri 10:10 PM · NWS gauge page

San Dimas Dam

3.7 mi

Level: 0.1 ft

Reading from Fri 10:09 PM · NWS gauge page

Live Oak Dam

4.1 mi

Level: 0.0 ft

Reading from Fri 11:01 PM · NWS gauge page

Big Dalton Dam

4.3 mi

Level: 0.0 ft

Reading from Fri 10:34 PM · NWS gauge page

For your home

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

Heating this week

This week 7Typical 0

Heating degree days, base 65°F

Comfort

Comfortable, non-humid air (dew point 57°F).

Open the windows?

Today, 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?

Chino Airport · official normals 1991–2020 · records 1998–2026

Oct 24, today vs a typical year

Today’s expected high is 8°4° colder than typical.

Last 7 days vs normal

On average 2°1° warmer than normal (daily mean temperature).

+4°+2°SunOct 18
+5°+3°MonOct 19
+4°+2°TueOct 20
+2°+1°WedOct 21
−5°−3°ThuOct 22
—FriOct 23
—SatOct 24

San Dimas weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 11 h 2 min; Losing 1 min 57 s a day; shortest Dec 21, 1 h 9 min less
Golden hour: 5:31–6:21 PM; Morning 6:48–7:38 AM
Blue hour: 6:21–6:31 PM; Morning 6:38–6:48 AM; first light 6:38 AM

Stars tonight? Fair

Clear 12:38–6:38 AM, but the moon is 96% lit and up.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:26 AM · rises 5:04 PM
Full moon: Oct 25
New moon: Nov 8

Looking northeast from San Dimas. The highest point on the skyline is about 11,400 ft, 56 mi away.Skyline from USGS elevation data, heights drawn up to 3× taller. Sky, sun and moon as they are now.