Tecumseh, MI Weather & Growing Conditions
This Afternoon
69°F
Showers And Thunderstorms
Showers and thunderstorms before 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then a chance of showers and thunderstorms. Cloudy. High near 69, with temperatures falling to around 66 in the afternoon. Southeast wind around 9 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Showers And Thunderstorms | 9 mph SE | 83% |
| Tonight | 60°F | Slight Chance Showers And Thunderstorms then Patchy Fog | 3 to 8 mph ESE | 91% |
| Sunday | 70°F | Patchy Fog | 5 to 12 mph NNW | 63% |
| Sunday Night | 50°F | Mostly Cloudy | 9 to 13 mph NE | 12% |
| Monday | 63°F | Mostly Cloudy | 10 to 14 mph NE | 11% |
| Monday Night | 47°F | Mostly Cloudy | 13 mph NE | 11% |
| Tuesday | 62°F | Mostly Cloudy | 16 mph NE | 12% |
| Tuesday Night | 49°F | Chance Rain Showers | 15 mph NE | 47% |
| Wednesday | 62°F | Rain Showers Likely | 13 to 16 mph ENE | 56% |
| Wednesday Night | 50°F | Showers And Thunderstorms Likely | 7 to 13 mph ENE | 56% |
| Thursday | 65°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 10 mph NE | 16% |
| Thursday Night | 49°F | Mostly Cloudy | 5 to 9 mph NE | 10% |
| Friday | 69°F | Mostly Sunny | 6 to 9 mph NNE | 8% |
| Friday Night | 48°F | Partly Cloudy | 3 to 8 mph NE | 5% |
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.