Sumner, MI Weather Forecast
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Sumner Weather Forecast
| THROUGH EARLY EVENING | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
| Sunny | Partly Cloudy | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy |
| Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | |
POP = Probability of Precipitation.
Weather Outlook Updated: 222 PM EDT Tue Oct 20 2026 

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Issued: 243 PM EDT Tue Oct 20 2026
Key Messages
- Dry and mild weather to continue through Sunday
- Rain chance arrive Monday with a pattern change starting Tuesday
Discussion
... Issued at 243 PM EDT Tue Oct 20 2026- Dry and mild weather to continue through Sunday
High pressure continues to dominate the weather over the region as it has for the past few days. The upper ridge axis remains to our west, allowing for plenty of subsidence to keep even cloud cover limited across the area.
We do see one small caveat in the clear and dry weather,...
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