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Town of Fairfield, MTFairfield, MT Weather Forecast
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Fairfield Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
 |  |  |  |  |  | | | | | | |
| Sunny | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Rain Showers | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Sunny | Chance of T-Storm | Mostly Sunny |
| Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 89°FHi: 32°C | Lo: 59°FLo: 15°C | Hi: 89°FHi: 32°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Hi: 80°FHi: 27°C Lo: 51°FLo: 11°C | Hi: 80°FHi: 27°C Lo: 51°FLo: 11°C | Hi: 85°FHi: 29°C | Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C |
| POP: 20% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 336 AM MDT Fri Aug 21 2026 
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Fairfield Forecast Discussion
Issued: 511 AM MDT Fri Aug 21 2026
Key Messages
- Very warm and dry conditions prevail again today with widely scattered gusty showers and thunderstorms moving in from the southwest this evening into tonight.
- After another very warm day on Saturday, scattered afternoon and evening showers and thunderstorms will develop in a southwest to northeast fashion, some storms will contain strong, gusty winds, heavy downpours capable of localized flooding over burn scars, and dangerous cloud to ground lightning.
- A surface front will bring gus...