Weather WorldFairfield High School, CA Weather Forecast
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Fairfield High School Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SUNDAY |
 |  |  | | | | | | | | |
| Sunny | Mostly Clear | Clearing | Mostly Clear | Mostly Sunny | Clear | Mostly Sunny | Mostly Clear | Clear | Clear | Mostly Sunny |
| Hi: 78°FHi: 26°C | Lo: 57°FLo: 14°C | Hi: 74°FHi: 23°C | Lo: 57°FLo: 14°C | Hi: 77°FHi: 25°C | Lo: 58°FLo: 14°C | Hi: 77°FHi: 25°C | Lo: 57°FLo: 14°C | Hi: 80°FHi: 27°C Lo: 56°FLo: 13°C | Hi: 80°FHi: 27°C Lo: 56°FLo: 13°C | Hi: 84°FHi: 29°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 800 AM PDT Mon Aug 31 2026 
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Issued: 1143 AM PDT Sun Aug 30 2026
Key Messages
- Well below normal temperatures persist through much of the week starting Monday.
- Elevated Fire Weather conditions Monday afternoon and early evening in the northern Sac Valley, northeastern foothills, and Burney Basin due to low humidity and breezy winds.
- Increasing confidence in areas of unsettled weather and continued cool temperatures late in the week and into next weekend.
Discussion
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Today through Early Week...
Dry weather with near normal temperatures continues today. Monday, as...