San Dimas, California Weather
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Weather Forecast for San Dimas, California : Los Angeles County
Issued: 1:32 pm PDT Sep 15, 2025 Latitude: 34.1066756 Longitude: -117.8067257 View on Google Maps

MouseOver for Detail Forecast
Tonight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Clear on Tonight Sunny on Tuesday Partly Sunny on Wednesday 70% chance of thunderstorms on Thursday 20% chance of thunderstorms on Friday 10% chance of thunderstorms on Saturday Sunny on Sunday Sunny on Monday
Low: 65°F High: 94°F High: 91°F High: 85°F High: 83°F High: 86°F High: 88°F High: 88°F
Low: 66°F Low: 65°F Low: 64°F Low: 66°F Low: 65°F Low: 66°F  
Clear Sunny Partly Sunny Thunderstorms Thunderstorms Thunderstorms Sunny Sunny
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Current Conditions at
ONTARIO - (KONT)
82°
Clear
as of 7:53 PM PDST
Rel. Humidity: 48%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.85 in.
Flight Rule: VFR
Wind Data
10 MPH
260° West
Cloud Level(s): Clear
Current Conditions at
CHINO - (KCNO)
75°
Clear
as of 7:53 PM PDST
Rel. Humidity: 60%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.85 in.
Flight Rule: VFR
Wind Data
7 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
FULLERTON - (KFUL)
73°
Clear
as of 7:53 PM PDST
Rel. Humidity: 69%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Clear on Tonight Tonight... Clear, with a low around 65. Calm wind becoming west northwest around 5 mph.
Sunny on Tuesday Tuesday... Sunny, with a high near 94. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 66. West southwest wind 5 to 10 mph becoming light and variable in the evening.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 91. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
30% chance of thunderstorms Wednesday Night Wednesday Night... A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 65. Southwest wind 5 to 10 mph becoming east after midnight. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
70% chance of thunderstorms Thursday Thursday... Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 85. Chance of precipitation is 70%.
30% chance of thunderstorms Thursday Night Thursday Night... A 30 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 64.
20% chance of thunderstorms Friday Friday... A chance of showers and thunderstorms, mainly before 11am. Partly sunny, with a high near 83.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 66.
10% chance of thunderstorms Saturday Saturday... A slight chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 86.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 65.
Sunny on Sunday Sunday... Sunny, with a high near 88.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 66.
Sunny on Monday Monday... Sunny, with a high near 88.
Sun Almanac for San Dimas, California
Sunrise: 06:35 AM
Sunset: 6:58 PM
Civil Sunrise:06:10 AM
Civil Sunset: 7:23 PM
Nautical Sunrise: 05:40 AM
Nautical Sunset: 7:52 PM
Astro Sunrise: 05:11 AM
Astro Sunset: 8:22 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.