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Fairfield Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SUNDAY | MONDAY |
 |  |  |  |  | | | | | |
| Patchy Fog | Mostly Clear | Sunny | Chance of Showers | Chance of T-Storm | Patchy Fog | Patchy Fog | Mostly Clear | Mostly Clear | Mostly Clear |
| Hi: 72°FHi: 22°C | Lo: 40°FLo: 4°C | Hi: 79°FHi: 26°C | Lo: 46°FLo: 8°C | Hi: 72°FHi: 22°C | Hi: 71°FHi: 22°C Lo: 39°FLo: 4°C | Hi: 71°FHi: 22°C Lo: 39°FLo: 4°C | Hi: 76°FHi: 24°C Lo: 42°FLo: 6°C | Hi: 76°FHi: 24°C Lo: 42°FLo: 6°C | Hi: 76°FHi: 24°C Lo: 42°FLo: 6°C |
| POP: 50% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 230 AM MDT Tue Sep 15 2026 
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Issued: 318 AM MDT Tue Sep 15 2026
Key Messages
- Slight warming and drying trend Tuesday and Wednesday, with light winds.
- Cold temperatures tonight will bring patchy fog and frost to the mountain valleys.
- A low pressure system will bring light precipitation and isolated afternoon thunderstorms across the area Thursday and Friday.
Aviation
/06Z Tuesday through Wednesday/... Issued 1208 AM MDT TUE SEP 15 2026
Generally VFR. Areas of fog/low stratus possible overnight in mtn valleys. Increasing high clouds this afternoon, mainly north an...