Chelsea, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chelsea, a city in Washtenaw County, Michigan.
This Afternoon
74°F
Mostly Sunny
Mostly sunny. High near 74, with temperatures falling to around 72 in the afternoon. South wind around 13 mph, with gusts as high as 23 mph.
7-day forecast for Chelsea
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Mostly Sunny | 13 mph S | 2% |
| Tonight | 61°F | Partly Cloudy then Slight Chance Light Rain | 12 mph SSE | 16% |
| Wednesday | 69°F | Light Rain | 13 to 17 mph S | 96% |
| Wednesday Night | 49°F | Light Rain Likely then Mostly Cloudy | 7 to 13 mph SSW | 65% |
| Thursday | 60°F | Mostly Cloudy then Slight Chance Light Rain | 9 to 16 mph SW | 17% |
| Thursday Night | 43°F | Chance Light Rain | 2 to 7 mph W | 30% |
| Friday | 54°F | Chance Light Rain | 2 to 9 mph NW | 46% |
| Friday Night | 34°F | Chance Light Rain | 9 mph NNW | 40% |
| Saturday | 51°F | Slight Chance Light Rain then Partly Sunny | 9 mph NW | 17% |
| Saturday Night | 30°F | Partly Cloudy | 5 mph W | 7% |
| Sunday | 56°F | Mostly Sunny then Slight Chance Light Rain | 3 to 10 mph W | 17% |
| Sunday Night | 32°F | Slight Chance Light Rain then Partly Cloudy | 6 to 9 mph WNW | 17% |
| Monday | 58°F | Mostly Sunny | 6 to 12 mph W | 12% |
| Monday Night | 36°F | Partly Cloudy | 9 mph WSW | 11% |
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 Nov 4, 2026.