Chelsea, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chelsea, a city in Washtenaw County, Michigan.
Today
85°F
Sunny
Sunny, with a high near 85. South southwest wind 2 to 6 mph.
7-day forecast for Chelsea
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 2 to 6 mph SSW | 0% |
| Tonight | 58°F | Mostly Clear | 1 to 6 mph SSW | 0% |
| Wednesday | 86°F | Sunny | 1 to 7 mph SW | 4% |
| Wednesday Night | 63°F | Slight Chance Showers And Thunderstorms | 1 to 6 mph WSW | 64% |
| Thursday | 82°F | Showers And Thunderstorms | 2 to 7 mph WSW | 78% |
| Thursday Night | 61°F | Showers And Thunderstorms | 0 to 5 mph W | 78% |
| Friday | 84°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 5 mph SW | 35% |
| Friday Night | 61°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 5 mph SW | 35% |
| Saturday | 87°F | Mostly Sunny | 2 to 8 mph SW | 9% |
| Saturday Night | 64°F | Mostly Clear then Chance Rain Showers | 3 to 7 mph SW | 26% |
| Sunday | 88°F | Chance Rain Showers | 3 to 13 mph SW | 26% |
| Sunday Night | 66°F | Chance Rain Showers | 7 to 12 mph WSW | 42% |
| Monday | 87°F | Chance Rain Showers | 6 to 9 mph WSW | 42% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 5 to 8 mph WSW | 50% |
Forecast source: National Weather Service (api.weather.gov) for Chelsea (42.311, -84.019). Updated through the day.
Growing snapshot for Chelsea
Last spring frost
Apr 30
First fall frost
Oct 12
Growing season
163 days
Hardiness zone
6a
More local growing data for Chelsea: nearby ZIP 48118 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Chelsea, Mi (1.4 mi from Chelsea). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.