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Weather in San Dimas, United States 🇺🇸

Weather Forecast in San Dimas

Current Weather in San Dimas

Heat Advisory issued July 20 at 12:11PM PDT until July 27 at 8:00PM PDT by NWS San Diego CA
Partly cloudy
32°C
Feels like 31°C. Partly cloudy.
🌬️ 16 km/h SW
💧 26% Humidity
🧭 1013 hPa
👁️ 16.0 km Visibility
☀️ UV Index: 10.2
🌡️ Dew Point: 13°C
🌅 Sunrise: 05:54 AM
🌇 Sunset: 08:01 PM
Map Overlays:

San Dimas currently sits at 32°C, partly cloudy, feeling like 31°C. Expect 26% humidity and winds of about 16 km/h, and the UV index is 10 (very high). The next few days in San Dimas look set for about 19°C up to 38°C. ⚠️ Heat Advisory issued July 20 at 12:11PM PDT until July 27 at 8:00PM PDT by NWS San Diego CA

Hourly Forecast for San Dimas

15:00
Sunny
37°
0%
16:00
Sunny
34°
0%
17:00
Sunny
30°
0%
18:00
Sunny
31°
0%
19:00
Sunny
29°
0%
20:00
Sunny
27°
0%
21:00
Clear
25°
1%
22:00
Clear
24°
1%
23:00
Clear
23°
3%
00:00
Clear
22°
5%
01:00
Clear
21°
7%
02:00
Clear
20°
8%
03:00
Clear
19°
9%
04:00
Clear
19°
8%
05:00
Clear
19°
4%
06:00
Sunny
19°
4%
07:00
Sunny
23°
3%
08:00
Sunny
25°
2%
09:00
Sunny
26°
2%
10:00
Sunny
27°
2%
11:00
Sunny
29°
1%
12:00
Sunny
31°
1%
13:00
Sunny
32°
1%
14:00
Sunny
32°
1%

14-Day Forecast for San Dimas

Mon, Jul 20
Sunny Sunny
38° / 19°
Tue, Jul 21
Sunny Sunny
32° / 19°
Wed, Jul 22
Sunny Sunny
34° / 20°
Thu, Jul 23
Sunny Sunny
36° / 21°
Fri, Jul 24
Sunny Sunny
37° / 22°
Sat, Jul 25
Sunny Sunny
39° / 23°
Sun, Jul 26
Sunny Sunny
37° / 24°
Mon, Jul 27
Sunny Sunny
34° / 23°
Tue, Jul 28
Sunny Sunny
34° / 21°
Wed, Jul 29
Sunny Sunny
34° / 22°
Thu, Jul 30
Sunny Sunny
36° / 21°
Fri, Jul 31
Sunny Sunny
35° / 20°
Sat, Aug 01
Sunny Sunny
34° / 19°
Sun, Aug 02
Sunny Sunny
36° / 20°

Additional Forecasts for San Dimas

Air Quality

💨 US EPA Index 2 (Moderate)
CO (Carbon Monoxide) 116.0 μg/m³
O₃ (Ozone) 133.0 μg/m³
NO₂ (Nitrogen Dioxide) 7.9 μg/m³
SO₂ (Sulphur Dioxide) 6.8 μg/m³
PM2.5 (Fine particles) 18.7 μg/m³
PM10 (Coarse particles) 22.4 μg/m³

Historical Weather

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Best Time to Be Outside in San Dimas Tomorrow

There is no good daylight window left in San Dimas today. Tomorrow, the most comfortable window looks like 07:00 to 08:00, when it is around 24°C. It should stay dry through that window. No significant rain is expected in the next several hours.

Frequently Asked Questions about Weather in San Dimas

What is the temperature in San Dimas right now?

It is currently 32°C (90°F) in San Dimas, partly cloudy (feels like 31°C).

What's the weather like in San Dimas right now?

Current weather in San Dimas: Partly cloudy, humidity 26%, wind 16 km/h SW.

What is today's forecast for San Dimas?

Today in San Dimas: high 38°C, low 19°C, sunny. Chance of rain: 2%.

What is the 7-day weather forecast for San Dimas?

Daily highs and lows for San Dimas:

  • 2026-07-20: 38°C / 19°C
  • 2026-07-21: 32°C / 19°C
  • 2026-07-22: 34°C / 20°C
  • 2026-07-23: 36°C / 21°C
  • 2026-07-24: 37°C / 22°C
  • 2026-07-25: 39°C / 23°C
  • 2026-07-26: 37°C / 24°C
Is it going to rain in San Dimas today?

There is a 2% chance of rain in San Dimas today.

What is the wind speed in San Dimas right now?

Wind in San Dimas is currently 16 km/h (10 mph) from the SW.

What is the UV index in San Dimas right now?

The UV index in San Dimas is currently 10.2 (very high). Sun protection is recommended when the index is 3 or higher.

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