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Thompson Field Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
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| Mostly Cloudy | Chance of Rain | Chance of Rain | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Chance of Rain | Partly Cloudy | Mostly Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 36°FLo: 2°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 66°FHi: 19°C | Lo: 40°FLo: 4°C | Hi: 66°FHi: 19°C | Lo: 40°FLo: 4°C | Hi: 66°FHi: 19°C | Lo: 40°FLo: 4°C |
| POP: 40% | POP: 30% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1222 AM MDT Tue Sep 29 2026 
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Issued: 1259 AM MDT Tue Sep 29 2026
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KEY MESSAGES:- Increasing winds today, especially across northwest Montana and the higher terrain.
- Scattered rain showers tonight into early Wednesday then slight warming trend into the remainder of the week.
- High confidence in warmer and drier conditions this weekend through much of next week (and maybe beyond).
Clouds will increase across northwest Montana today as a weakening moisture plume settles along the Canadian border, generating light orographic showers focused primarily ove...