Dexter, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dexter, a city in Washtenaw County, Michigan.
Tonight
59°F
Patchy Fog
Patchy fog and a slight chance of showers and thunderstorms between 8pm and 10pm, then a chance of showers and thunderstorms between 10pm and midnight, then patchy fog and showers and thunderstorms likely between midnight and 2am, then patchy fog and showers and thunderstorms between 2am and 5am, then patchy fog and showers and thunderstorms. Cloudy. Low around 59, with temperatures rising to around 61 overnight. East wind 3 to 9 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Dexter
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Patchy Fog | 3 to 9 mph E | 95% |
| Sunday | 68°F | Patchy Fog | 5 to 12 mph NE | 68% |
| Sunday Night | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 12 mph NE | 15% |
| Monday | 63°F | Partly Sunny | 10 to 14 mph ENE | 7% |
| Monday Night | 48°F | Mostly Cloudy | 12 mph NE | 7% |
| Tuesday | 62°F | Mostly Cloudy then Slight Chance Rain Showers | 12 to 15 mph NE | 15% |
| Tuesday Night | 50°F | Chance Rain Showers | 15 mph ENE | 39% |
| Wednesday | 61°F | Chance Rain Showers | 15 mph ENE | 52% |
| Wednesday Night | 51°F | Chance Rain Showers | 8 to 13 mph ENE | 52% |
| Thursday | 64°F | Slight Chance Rain Showers then Partly Sunny | 10 mph ENE | 16% |
| Thursday Night | 50°F | Mostly Cloudy | 3 to 8 mph NE | 9% |
| Friday | 68°F | Partly Sunny | 5 to 8 mph NE | 9% |
| Friday Night | 49°F | Partly Cloudy | 2 to 7 mph NNE | 4% |
| Saturday | 70°F | Mostly Sunny | 3 to 7 mph NNE | 4% |
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 20, 2026.