Grant, MT Weather Forecast
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Grant Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
| Patchy Fog | Patchy Fog | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Sunny | Partly Cloudy | Rain Showers |
| Lo: 45°FLo: 7°C | Hi: 78°FHi: 26°C | Lo: 45°FLo: 7°C | Hi: 64°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 69°FHi: 21°C Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C Lo: 41°FLo: 5°C | Hi: 76°FHi: 24°C Lo: 45°FLo: 7°C | Hi: 76°FHi: 24°C Lo: 45°FLo: 7°C | Hi: 78°FHi: 26°C | Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C |
| POP: 70% | POP: 70% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 217 PM MDT Sat Sep 05 2026 

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Issued: 244 PM MDT Sat Sep 5 2026
Key Messages
- Showers and thunderstorms tonight and Sunday, become a more widespread rainfall Sunday night into Monday.
- An isolated severe storm possible Sunday.
- Cool temperatures to begin the week, with some warmer afternoon temperatures for a few days mid week.
Discussion
...- Meteorological Overview: A slow moving upper level low will remain to our west through Sunday, before slowly moving eastward Sunday night into Monday. Expect waves of showers/thunderstorms to move through the CWA from now thr...
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