Sumner, MI Weather Forecast

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Sumner, MI Weather Forecast

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Sumner MI weather  - Clear - 69°F
Clear
69°F
Updated 8:23 pm
Feels Like 73°F
Humidity 100%
Wind S 3 mph
Barometer  29.94 in
Dew Point 69°F
Sumner MI weather  - Clear - 21°C
Clear
21°C
Updated 8:23 pm
Feels Like 23°C
Humidity 100%
Wind S 5 km/h
Barometer  101.4 kPa
Dew Point 21°C

Sumner Weather Forecast

THROUGH EARLY EVENING TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT
Sumner, MI Weather - Through Early Evening Chance Of T-Storm Sumner, MI Weather - Tonight Chance Of T-Storm Sumner, MI Weather - Friday Chance Of T-Storm Sumner, MI Weather - Friday Night Chance Of T-Storm Sumner, MI Weather - Saturday Showers Sumner, MI Weather - Saturday Night Mostly Clear Sumner, MI Weather - Sunday Sunny Sumner, MI Weather - Sunday Night Mostly Clear Sumner, MI Weather - Labor Day Mostly Sunny Sumner, MI Weather - Monday Night Partly Cloudy Sumner, MI Weather - Tuesday Chance Of Showers Sumner, MI Weather - Tuesday Night Chance Of Showers
Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Showers Mostly Clear Sunny Mostly Clear Mostly Sunny Partly Cloudy Chance of Showers Chance of Showers
Lo: 65°FLo: 18°C Hi: 81°FHi: 27°C
Lo: 61°FLo: 16°C Hi: 80°FHi: 27°C
Lo: 51°FLo: 11°C Hi: 79°FHi: 26°C
Lo: 55°FLo: 13°C Hi: 80°FHi: 27°C
Lo: 59°FLo: 15°C Hi: 80°FHi: 27°C
Lo: 65°FLo: 18°C
POP: 90% POP: 70% POP: 70% POP: 60% POP: 60% POP: 20% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 552 PM EDT Thu Sep 03 2026 Sumner, MI Weather - WeatherWorld.com

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Sumner Forecast Discussion

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Issued: 640 PM EDT Thu Sep 3 2026

Key Messages

  • Showers/Storms Through Late Afternoon, Then Overnight/Friday AM
  • Likely Dry Friday Afternoon; Scattered Storms Possible Late

Discussion

... Issued at 231 PM EDT Thu Sep 3 2026
  • Showers/Storms Through Late Afternoon, Then Overnight/Friday AM
  • Through the end of the afternoon, the most concentrated areas for stronger convection will be near/north of I-96 and east of US 131 where scattered damaging wind gusts and large hail will be possible. In this region, effective shear values of 40-45 kts...