Mendon, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mendon, a village in St. Joseph County, Michigan.
Tonight
62°F
Mostly Cloudy then Chance Rain Showers
A chance of rain showers after 4am. Mostly cloudy, with a low around 62. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
7-day forecast for Mendon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Mostly Cloudy then Chance Rain Showers | 15 mph S | 29% |
| Wednesday | 69°F | Rain Showers Likely | 15 mph S | 70% |
| Wednesday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 15 mph SW | 22% |
| Thursday | 59°F | Partly Sunny | 10 to 15 mph SW | 9% |
| Thursday Night | 42°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph W | 27% |
| Friday | 53°F | Chance Rain Showers | 0 to 10 mph NW | 35% |
| Friday Night | 34°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph N | 19% |
| Saturday | 52°F | Partly Sunny | 5 to 10 mph NW | 11% |
| Saturday Night | 32°F | Partly Cloudy | 0 to 5 mph W | 4% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 10 mph W | 21% |
| Sunday Night | 33°F | Slight Chance Rain Showers | 5 to 10 mph W | 21% |
| Monday | 59°F | Mostly Sunny | 5 to 15 mph W | 14% |
| Monday Night | 38°F | Mostly Clear | 5 to 10 mph SW | 5% |
| Tuesday | 61°F | Mostly Sunny | 5 to 15 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov) for Mendon (42.009, -85.454). Updated through the day.
Growing snapshot for Mendon
Last spring frost
Apr 30
First fall frost
Oct 17
Growing season
170 days
Hardiness zone
6a
More local growing data for Mendon: nearby ZIP 49072 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Three Rivers, Mi (10.9 mi from Mendon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.