Harman US

Tecumseh, MI Weather & Growing Conditions

Tonight
54°F
Mostly Cloudy then Chance Light Rain
A chance of rain after 1am. Mostly cloudy. Low around 54, with temperatures rising to around 57 overnight. East northeast wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Tonight 54°F Mostly Cloudy then Chance Light Rain 7 mph ENE 25%
Saturday 69°F Rain Showers 5 to 8 mph E 89%
Saturday Night 58°F Showers And Thunderstorms then Slight Chance Showers And Thunderstorms 3 to 8 mph ESE 78%
Sunday 68°F Showers And Thunderstorms Likely 5 to 12 mph N 65%
Sunday Night 50°F Chance Rain Showers then Mostly Cloudy 12 mph NE 44%
Monday 63°F Chance Rain Showers 10 to 14 mph NE 25%
Monday Night 48°F Slight Chance Rain Showers 13 mph NE 15%
Tuesday 62°F Mostly Cloudy then Slight Chance Rain Showers 15 mph NE 17%
Tuesday Night 50°F Chance Rain Showers 10 to 14 mph NE 41%
Wednesday 62°F Chance Rain Showers 13 mph NE 44%
Wednesday Night 50°F Chance Rain Showers 6 to 12 mph NE 40%
Thursday 65°F Mostly Cloudy 7 to 10 mph NNE 10%
Thursday Night 50°F Mostly Cloudy 5 to 8 mph NNE 9%
Friday 68°F Mostly Sunny 5 to 8 mph NNE 6%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Tecumseh, MI

Last spring frost
May 3
First fall frost
Oct 13
Growing season
160 days
Hardiness zone
6a

Explore more for Tecumseh, MI: full frost dates · planting calendar · Michigan frost dates

Climate data from the nearest NOAA station, Tecumseh, Mi (0.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.