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, with a high near 75. Northeast wind around 8 mph.
7-day forecast for Tecumseh
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Mostly Sunny | 8 mph NE | 0% |
| Tonight | 54°F | Mostly Cloudy | 7 mph NE | 4% |
| Saturday | 68°F | Rain Showers | 5 to 9 mph E | 81% |
| Saturday Night | 55°F | Showers And Thunderstorms | 5 to 8 mph ENE | 85% |
| Sunday | 66°F | Rain Showers | 6 to 10 mph NE | 78% |
| Sunday Night | 48°F | Chance Rain Showers | 12 mph NE | 50% |
| Monday | 62°F | Chance Rain Showers | 14 mph NE | 39% |
| Monday Night | 47°F | Chance Rain Showers | 14 mph NE | 36% |
| Tuesday | 61°F | Chance Rain Showers | 15 mph NE | 36% |
| Tuesday Night | 49°F | Chance Rain Showers | 10 to 14 mph NE | 37% |
| Wednesday | 63°F | Chance Rain Showers | 14 mph NNE | 37% |
| Wednesday Night | 48°F | Slight Chance Rain Showers | 6 to 10 mph N | 17% |
| Thursday | 67°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph N | 17% |
| Thursday Night | 49°F | Mostly Cloudy | 5 to 8 mph N | 12% |
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
Nearby towns & communities
Addison
Adrian
Blissfield
Britton
Clayton
Clinton
Deerfield
Hudson
Jasper
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 Sep 18, 2026.