Mendon, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mendon, a village in Mercer County, Ohio.
This Afternoon
79°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 4pm, then a chance of showers and thunderstorms. Cloudy, with a high near 79. South wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Mendon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Showers And Thunderstorms Likely | 7 mph S | 67% |
| Tonight | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph S | 62% |
| Sunday | 77°F | Showers And Thunderstorms | 3 to 12 mph W | 82% |
| Sunday Night | 55°F | Showers And Thunderstorms | 10 to 14 mph NE | 77% |
| Monday | 66°F | Chance Rain Showers | 12 to 16 mph NE | 46% |
| Monday Night | 51°F | Chance Rain Showers | 12 to 17 mph NE | 46% |
| Tuesday | 66°F | Slight Chance Rain Showers | 12 to 17 mph NE | 18% |
| Tuesday Night | 53°F | Chance Rain Showers | 10 to 16 mph NE | 46% |
| Wednesday | 66°F | Chance Rain Showers | 12 mph NE | 46% |
| Wednesday Night | 52°F | Chance Rain Showers | 6 to 12 mph NE | 38% |
| Thursday | 68°F | Mostly Cloudy | 9 mph NE | 10% |
| Thursday Night | 52°F | Mostly Cloudy | 5 to 9 mph NE | 10% |
| Friday | 70°F | Mostly Sunny | 5 to 10 mph NE | 7% |
| Friday Night | 50°F | Partly Cloudy | 3 to 10 mph NE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Mendon (40.673, -84.518). Updated through the day.
Growing snapshot for Mendon
Last spring frost
Apr 27
First fall frost
Oct 19
Growing season
175 days
Hardiness zone
6a
More local growing data for Mendon: nearby ZIP 45862 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Celina 3 Ne, Oh (7.1 mi from Mendon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.