Grossmont, California Weather
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Weather Forecast for Grossmont, California : San Diego County
Issued: 1:00 pm PDT Sep 15, 2025 Latitude: 32.7783843 Longitude: -116.9883606 View on Google Maps

MouseOver for Detail Forecast
Tonight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Mostly Clear on Tonight Sunny on Tuesday 30% chance of thunderstorms on Wednesday 50% chance of thunderstorms on Thursday 10% chance of thunderstorms on Friday Mostly Sunny on Saturday Patchy Fog on Sunday Patchy Fog on Monday
Low: 67°F High: 90°F High: 86°F High: 86°F High: 84°F High: 86°F High: 87°F High: 87°F
Low: 68°F Low: 68°F Low: 67°F Low: 67°F Low: 66°F Low: 67°F  
Mostly Clear Sunny Thunderstorms Thunderstorms Thunderstorms Mostly Sunny Patchy Fog Patchy Fog
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Current Conditions at
SAN DIEGO MONTGOMERY - (KMYF)
77°
Clear
as of 6:53 PM PDST
Rel. Humidity: 65%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.84 in.
Flight Rule: VFR
Wind Data
7 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
SAN DIEGO INTL - (KSAN)
72°
Mostly Clear
as of 6:51 PM PDST
Rel. Humidity: 83%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.85 in.
Flight Rule: VFR
Wind Data
9 MPH
300° Northwest
Cloud Level(s): Few at 1200ft
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 67. West wind around 5 mph becoming calm in the evening.
Sunny on Tuesday Tuesday... Sunny, with a high near 90. Light west wind increasing to 5 to 10 mph in the afternoon.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 68. Northwest wind around 5 mph.
30% chance of thunderstorms Wednesday Wednesday... A chance of showers and thunderstorms after 11am. Partly sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
40% chance of thunderstorms Wednesday Night Wednesday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Northeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
50% chance of thunderstorms Thursday Thursday... A chance of showers and thunderstorms. Mostly cloudy, with a high near 86. Chance of precipitation is 50%.
20% chance of thunderstorms Thursday Night Thursday Night... A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 20%.
10% chance of thunderstorms Friday Friday... A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 67.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 86.
Patchy Fog on Saturday Night Saturday Night... Patchy fog. Otherwise, partly cloudy, with a low around 66.
Patchy Fog on Sunday Sunday... Patchy fog. Otherwise, mostly sunny, with a high near 87.
Patchy Fog on Sunday Night Sunday Night... Patchy fog. Otherwise, partly cloudy, with a low around 67.
Patchy Fog on Monday Monday... Patchy fog. Otherwise, mostly sunny, with a high near 87.
Sun Almanac for Grossmont, California
Sunrise: 06:32 AM
Sunset: 6:54 PM
Civil Sunrise:06:07 AM
Civil Sunset: 7:19 PM
Nautical Sunrise: 05:38 AM
Nautical Sunset: 7:47 PM
Astro Sunrise: 05:09 AM
Astro Sunset: 8:17 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.