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Weather in San Dimas, United States 🇺🇸

Current Weather in San Dimas

Heat Advisory issued September 7 at 11:09AM PDT until September 10 at 8:00PM PDT by NWS San Diego CA
Clear
24°C
Feels like 26°C. Clear.
🌬️ 4 km/h ESE
💧 60% Humidity
🧭 1011 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 0.0
🌡️ Dew Point: 16°C
🌅 Sunrise: 06:29 AM
🌇 Sunset: 07:08 PM
Map Overlays:

Right now San Dimas is 24°C with clear, feeling like 26°C. Humidity sits at 60% and winds are near 4 km/h, and the UV index is 0 (low). Over the next few days, temperatures in San Dimas range from about 22°C to 36°C. ⚠️ Heat Advisory issued September 7 at 11:09AM PDT until September 10 at 8:00PM PDT by NWS San Diego CA

Hourly Forecast for San Dimas

03:00
Clear
24°
5%
04:00
Clear
24°
4%
05:00
Clear
23°
5%
06:00
Overcast
22°
19%
07:00
Overcast
23°
17%
08:00
Overcast
24°
17%
09:00
Overcast
28°
15%
10:00
Overcast
30°
10%
11:00
Overcast
31°
9%
12:00
Partly Cloudy
33°
2%
13:00
Patchy rain nearby
34°
4%
14:00
Partly Cloudy
35°
3%
15:00
Overcast
35°
9%
16:00
Overcast
35°
9%
17:00
Patchy rain nearby
34°
10%
18:00
Overcast
33°
9%
19:00
Overcast
31°
9%
20:00
Overcast
30°
9%
21:00
Overcast
30°
9%
22:00
Overcast
29°
9%
23:00
Cloudy
29°
5%
00:00
Overcast
29°
9%
01:00
Overcast
29°
9%
02:00
Cloudy
29°
7%

14-Day Forecast for San Dimas

Tue, Sep 08
Overcast Overcast
35° / 22°
Wed, Sep 09
Sunny Sunny
36° / 28°
Thu, Sep 10
Sunny Sunny
34° / 25°
Fri, Sep 11
Sunny Sunny
31° / 24°
Sat, Sep 12
Sunny Sunny
28° / 20°
Sun, Sep 13
Sunny Sunny
28° / 19°
Mon, Sep 14
Sunny Sunny
28° / 20°
Tue, Sep 15
Sunny Sunny
28° / 20°
Wed, Sep 16
Sunny Sunny
29° / 20°
Thu, Sep 17
Sunny Sunny
28° / 20°
Fri, Sep 18
Sunny Sunny
28° / 19°
Sat, Sep 19
Sunny Sunny
28° / 19°
Sun, Sep 20
Sunny Sunny
26° / 18°
Mon, Sep 21
Sunny Sunny
26° / 17°

Additional Forecasts for San Dimas

Air Quality

💨 US EPA Index 2 (Moderate)
CO (Carbon Monoxide) 268.0 μg/m³
O₃ (Ozone) 1.0 μg/m³
NO₂ (Nitrogen Dioxide) 56.6 μg/m³
SO₂ (Sulphur Dioxide) 4.9 μg/m³
PM2.5 (Fine particles) 22.9 μg/m³
PM10 (Coarse particles) 23.9 μg/m³

Historical Weather

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Best Time to Be Outside in San Dimas Today

The most comfortable window in San Dimas today looks like 07:00 to 10:00, when it is around 25°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 24°C (76°F) in San Dimas, clear (feels like 26°C).

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

Current weather in San Dimas: Clear, humidity 60%, wind 4 km/h ESE.

What is today's forecast for San Dimas?

Today in San Dimas: high 35°C, low 22°C, overcast. Chance of rain: 7%.

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

Daily highs and lows for San Dimas:

  • 2026-09-08: 35°C / 22°C
  • 2026-09-09: 36°C / 28°C
  • 2026-09-10: 34°C / 25°C
  • 2026-09-11: 31°C / 24°C
  • 2026-09-12: 28°C / 20°C
  • 2026-09-13: 28°C / 19°C
  • 2026-09-14: 28°C / 20°C
Is it going to rain in San Dimas today?

There is a 7% chance of rain in San Dimas today. Total expected precipitation: 0.03 mm.

What is the wind speed in San Dimas right now?

Wind in San Dimas is currently 4 km/h (2 mph) from the ESE.

What is the UV index in San Dimas right now?

The UV index in San Dimas is currently 0 (low). Sun protection is recommended when the index is 3 or higher.

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