National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

CLAREMONT (CMOC1)

Lat: 34.1368°NLon: 117.70757°WElev: 1645.0ft.

NA

90°F

32°C

Humidity 16%
Wind Speed WSW 5 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Heat Index86°F (30°C)
Last update 05 Sep 03:55 PM PDT
Extended Forecast for

San Dimas CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 85. Southwest wind around 5 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 11pm. Increasing clouds, with a low around 67. Southwest wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.

    Low: 67 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 11am. Cloudy, then gradually becoming mostly sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 67. Southwest wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 88. Light west wind becoming west southwest 5 to 10 mph in the afternoon.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers. Mostly sunny, with a high near 90.

    High: 90 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 85. Southwest wind around 5 mph.
Tonight
A 30 percent chance of showers, mainly after 11pm. Increasing clouds, with a low around 67. Southwest wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers likely, with thunderstorms also possible after 11am. Cloudy, then gradually becoming mostly sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 67. Southwest wind around 5 mph becoming calm in the evening.
Labor Day
Sunny, with a high near 88. Light west wind becoming west southwest 5 to 10 mph in the afternoon.
Monday Night
Mostly clear, with a low around 68.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 70.
Wednesday
Sunny and hot, with a high near 96.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
Sunny, with a high near 94.
Thursday Night
Mostly clear, with a low around 68.
Friday
Sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Dimas CA
 34.09°N 117.81°W (Elev. 866 ft)
Last Update:
11:26 am PDT Sep 5, 2026
Forecast Valid:
4pm PDT Sep 5, 2026-6pm PDT Sep 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation