Tecumseh, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tecumseh, a city in Lenawee County, Michigan.
This Afternoon
75°F
Mostly Sunny
Mostly sunny. High near 75, with temperatures falling to around 73 in the afternoon. South southwest wind around 15 mph, with gusts as high as 26 mph.
7-day forecast for Tecumseh
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Mostly Sunny | 15 mph SSW | 3% |
| Tonight | 60°F | Mostly Cloudy then Slight Chance Light Rain | 12 mph S | 21% |
| Wednesday | 69°F | Light Rain | 12 to 16 mph S | 96% |
| Wednesday Night | 49°F | Light Rain Likely | 7 to 13 mph SSW | 67% |
| Thursday | 64°F | Partly Sunny | 8 to 15 mph SW | 5% |
| Thursday Night | 44°F | Mostly Cloudy | 2 to 8 mph WSW | 13% |
| Friday | 60°F | Chance Light Rain | 2 to 7 mph NW | 36% |
| Friday Night | 38°F | Chance Light Rain | 6 mph N | 36% |
| Saturday | 55°F | Slight Chance Light Rain then Partly Sunny | 8 mph NNW | 16% |
| Saturday Night | 34°F | Partly Cloudy | 5 mph WNW | 8% |
| Sunday | 55°F | Slight Chance Light Rain | 3 to 9 mph WSW | 18% |
| Sunday Night | 33°F | Slight Chance Light Rain | 6 mph W | 18% |
| Monday | 56°F | Slight Chance Light Rain then Mostly Sunny | 6 to 10 mph W | 16% |
| Monday Night | 35°F | Partly Cloudy | 7 mph WSW | 9% |
Forecast source: National Weather Service (api.weather.gov) for Tecumseh (42.006, -83.944). Updated through the day.
Growing snapshot for Tecumseh
Last spring frost
May 3
First fall frost
Oct 13
Growing season
160 days
Hardiness zone
6a
More local growing data for Tecumseh: nearby ZIP 49286 weather · frost dates · planting calendar · Michigan frost dates
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Blissfield
Britton
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Hudson
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Manitou Beach-Devils Lake
Morenci
Onsted
Climate data from the nearest NOAA station, Tecumseh, Mi (0.5 mi from Tecumseh). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.