Dexter, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dexter, a city in Washtenaw County, Michigan.
Tonight
55°F
Mostly Cloudy then Chance Light Rain
A chance of rain after midnight. Mostly cloudy, with a low around 55. East northeast wind 5 to 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Dexter
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Mostly Cloudy then Chance Light Rain | 5 to 8 mph ENE | 30% |
| Saturday | 66°F | Rain Showers | 5 to 9 mph ESE | 86% |
| Saturday Night | 57°F | Showers And Thunderstorms | 5 to 9 mph ESE | 81% |
| Sunday | 67°F | Rain Showers Likely | 6 to 13 mph NNE | 64% |
| Sunday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 9 to 13 mph NE | 44% |
| Monday | 63°F | Slight Chance Rain Showers | 10 to 14 mph NE | 21% |
| Monday Night | 48°F | Mostly Cloudy | 14 mph NE | 11% |
| Tuesday | 62°F | Mostly Cloudy then Slight Chance Rain Showers | 15 mph NE | 16% |
| Tuesday Night | 50°F | Chance Rain Showers | 14 mph NE | 46% |
| Wednesday | 62°F | Chance Rain Showers | 14 mph NE | 46% |
| Wednesday Night | 50°F | Chance Rain Showers | 7 to 10 mph NE | 40% |
| Thursday | 65°F | Partly Sunny | 7 to 10 mph NNE | 10% |
| Thursday Night | 50°F | Mostly Cloudy | 5 to 8 mph NNE | 10% |
| Friday | 68°F | Mostly Sunny | 5 to 8 mph N | 7% |
Forecast source: National Weather Service (api.weather.gov) for Dexter (42.332, -83.881). Updated through the day.
Growing snapshot for Dexter
Last spring frost
Apr 30
First fall frost
Oct 12
Growing season
163 days
Hardiness zone
6a
More local growing data for Dexter: nearby ZIP 48130 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Chelsea, Mi (5.9 mi from Dexter). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.