Mahnomen, MN Weather Forecast
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Mahnomen Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
| Patchy Fog | Patchy Fog | Mostly Cloudy | Mostly Sunny | Mostly Clear | Clear | Clear | Sunny | Chance of Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy |
| Lo: 48°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 43°FLo: 6°C | Hi: 65°FHi: 18°C | Lo: 35°FLo: 2°C | Hi: 65°FHi: 18°C Lo: 38°FLo: 3°C | Hi: 65°FHi: 18°C Lo: 38°FLo: 3°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Hi: 75°FHi: 24°C Lo: 48°FLo: 9°C | Hi: 75°FHi: 24°C Lo: 48°FLo: 9°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 337 AM CDT Sun Sep 20 2026 

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Meteorlogic Glosserator
Instant definitions for any meteorological term.
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Issued: 414 AM CDT Sun Sep 20 2026
Key Messages
- Frost chance exists Monday night/early Tuesday for northwest MN.
- With the exception of Wednesday night, a dry period ahead.
Discussion
... Issued at 230 PM CDT Sat Sep 19 2026
...Synopsis...
Water vapor loop shows split flow with the main upper low over ID/UT, and west to southwest flow over the Plains. Weak frontal boundary sinking down over our region has brought a few weak rain showers. Even with cold air advection behind the front, plenty of clouds into tonight should help keep temps...
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