| National Weather Service Forecast for:
Fairfax CA Issued by: National Weather Service San Francisco Bay Area/Monterey, CA |
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| Updated: 2:54 pm PST Dec 22, 2025 | ||||||||||||||||||
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| Tonight |
Rain likely. Patchy fog between 8pm and 10pm. Otherwise, cloudy, with a low around 51. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible. |
| Tuesday |
Rain. High near 57. South southeast wind 6 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible. |
| Tuesday Night |
Rain. Low around 48. South wind 17 to 21 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible. |
| Wednesday |
Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. High near 57. Southwest wind 6 to 11 mph becoming south southeast in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
| Wednesday Night |
Showers and possibly a thunderstorm before 7pm, then rain between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could be severe. Low around 50. South southeast wind 15 to 20 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible. |
| Christmas Day |
Showers and possibly a thunderstorm. High near 54. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible. |
| Thursday Night |
Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Low around 47. Chance of precipitation is 100%. |
| Friday |
Rain before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 53. |
| Friday Night |
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 44. |
| Saturday |
Mostly sunny, with a high near 54. |
| Saturday Night |
Mostly clear, with a low around 40. |
| Sunday |
Sunny, with a high near 53. |
| Sunday Night |
Partly cloudy, with a low around 40. |
| Monday |
Mostly sunny, with a high near 54. |
Forecast from NOAA-NWS for Fairfax CA.