Foster, California Weather
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Weather Forecast for Foster, California : San Diego County
Issued: 1:00 pm PDT Sep 15, 2025 Latitude: 32.9083813 Longitude: -116.9261385 View on Google Maps

MouseOver for Detail Forecast
Overnight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Mostly Clear on Overnight 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 Mostly Sunny on Sunday Patchy Fog on Monday
Low: 67°F High: 95°F High: 90°F High: 88°F High: 87°F High: 89°F High: 90°F High: 91°F
Low: 67°F Low: 67°F Low: 66°F Low: 65°F Low: 65°F Low: 66°F  
Mostly Clear Sunny Thunderstorms Thunderstorms Thunderstorms Mostly Sunny Mostly Sunny Patchy Fog
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Current Conditions at
RAMONA - (KRNM)
66°
Clear
as of 12:53 AM PDST
Rel. Humidity: 55%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
SAN DIEGO MONTGOMERY - (KMYF)
70°
Clear
as of 12:53 AM PDST
Rel. Humidity: 83%
Dew Point: 64°F
Visibility: 9 Miles
Pressure: 29.90 in.
Flight Rule: VFR
Wind Data
3 MPH
340° North
Cloud Level(s): Clear
Current Conditions at
MIRAMAR MCAS - (KNKX)
66°
Clear
as of 12:55 AM PDST
Rel. Humidity: 93%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.90 in.
Flight Rule: VFR
Wind Data
5 MPH
320° Northwest
Cloud Level(s): Clear
Current Conditions at
SAN DIEGO INTL - (KSAN)
70°
Mostly Clear
as of 12:51 AM PDST
Rel. Humidity: 88%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.90 in.
Flight Rule: VFR
Wind Data
5 MPH
350° North
Cloud Level(s): Few at 1000ft
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 67. Calm wind.
Sunny on Tuesday Tuesday... Sunny, with a high near 95. Light and variable wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 67. West wind around 5 mph becoming calm in the evening.
30% chance of thunderstorms Wednesday Wednesday... A chance of showers and thunderstorms after 11am. Partly sunny, with a high near 90. Light and variable wind becoming west 5 to 10 mph in the morning. 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 67. Northeast wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
50% chance of thunderstorms Thursday Thursday... A chance of showers and thunderstorms. Mostly cloudy, with a high near 88. 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 66. Chance of precipitation is 20%.
10% chance of thunderstorms Friday Friday... A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 65.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 89.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 65.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 90.
Patchy Fog on Sunday Night Sunday Night... Patchy fog. Otherwise, partly cloudy, with a low around 66.
Patchy Fog on Monday Monday... Patchy fog. Otherwise, mostly sunny, with a high near 91.
Current Radar Image


Sun Almanac for Foster, California
Sunrise: 06:32 AM
Sunset: 6:52 PM
Civil Sunrise:06:08 AM
Civil Sunset: 7:17 PM
Nautical Sunrise: 05:39 AM
Nautical Sunset: 7:46 PM
Astro Sunrise: 05:09 AM
Astro Sunset: 8:15 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.