Sand Coulee, MT Weather Forecast
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Sand Coulee Weather Forecast
| REST OF TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY |
| Chance of Rain | Mostly Cloudy | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Sunny | Partly Cloudy | Partly Cloudy |
| Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C | Hi: 80°FHi: 27°C Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C Lo: 50°FLo: 10°C | Hi: 79°FHi: 26°C Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 117 PM MDT Sat Sep 19 2026 

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Issued: 101 PM MDT Sat Sep 19 2026
Key Messages
- Rain will slowly end from west to east across Southwest and Central Montana through the overnight hours tonight.
- Drier and warmer weather pattern develops for the upcoming week.
Discussion
...
A vertically stacked mid-upper level low, centered over southern will slowly track east into Wyoming through tonight while gradually weakening. As the system continues eastward tonight, a few lingering showers remain possible across southwestern Montana into Sunday morning as moisture wraps around...
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