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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

WhenTempForecastWindPrecip
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

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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.