Chatham, MI Weather & Growing Conditions
Tonight
47°F
Patchy Fog
Patchy fog between 10pm and 1am. Mostly cloudy, with a low around 47. Northwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Patchy Fog | 0 to 5 mph NW | 10% |
| Sunday | 60°F | Slight Chance Rain Showers then Partly Sunny | 5 to 15 mph N | 17% |
| Sunday Night | 40°F | Mostly Cloudy | 5 to 15 mph NE | 1% |
| Monday | 59°F | Partly Sunny | 5 to 10 mph NE | 0% |
| Monday Night | 37°F | Partly Cloudy | 0 to 10 mph NE | 0% |
| Tuesday | 63°F | Sunny | 5 to 10 mph E | 0% |
| Tuesday Night | 40°F | Mostly Clear | 5 to 10 mph E | 1% |
| Wednesday | 66°F | Sunny | 5 to 10 mph E | 3% |
| Wednesday Night | 42°F | Mostly Clear | 5 mph SE | 2% |
| Thursday | 68°F | Mostly Sunny | 5 mph SE | 1% |
| Thursday Night | 44°F | Partly Cloudy | 0 to 5 mph SE | 4% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph E | 4% |
| Friday Night | 45°F | Partly Cloudy | 0 to 5 mph S | 1% |
| Saturday | 72°F | Mostly Sunny | 5 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Chatham, MI
Last spring frost
May 30
First fall frost
Sep 27
Growing season
119 days
Hardiness zone
5a
Explore more for Chatham, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Chatham Exp Farm 2, Mi (2.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.