Mendon, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mendon, a village in St. Joseph County, Michigan.
Tonight
56°F
Mostly Cloudy then Chance Rain Showers
A chance of rain showers after 2am. Mostly cloudy, with a low around 56. East wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Mendon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Mostly Cloudy then Chance Rain Showers | 5 to 10 mph E | 43% |
| Saturday | 71°F | Showers And Thunderstorms | 10 mph E | 90% |
| Saturday Night | 60°F | Showers And Thunderstorms | 5 to 10 mph S | 87% |
| Sunday | 69°F | Showers And Thunderstorms | 5 to 15 mph NE | 81% |
| Sunday Night | 51°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 49% |
| Monday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 40% |
| Monday Night | 47°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 17% |
| Tuesday | 64°F | Partly Sunny then Chance Rain Showers | 10 to 15 mph NE | 28% |
| Tuesday Night | 49°F | Chance Rain Showers | 10 to 15 mph NE | 28% |
| Wednesday | 63°F | Slight Chance Rain Showers | 10 mph NE | 19% |
| Wednesday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 13% |
| Thursday | 67°F | Partly Sunny | 5 to 10 mph NE | 6% |
| Thursday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 6% |
| Friday | 70°F | Mostly Sunny | 5 to 10 mph NE | 7% |
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 Sep 19, 2026.