Harpster, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harpster, a village in Wyandot County, Ohio.
Overnight
57°F
Partly Cloudy
Partly cloudy, with a low around 57. East wind around 5 mph.
7-day forecast for Harpster
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Partly Cloudy | 5 mph E | 1% |
| Saturday | 80°F | Chance Rain Showers | 7 mph SE | 44% |
| Saturday Night | 66°F | Showers And Thunderstorms | 7 mph S | 76% |
| Sunday | 78°F | Showers And Thunderstorms | 6 to 14 mph NW | 89% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 14 mph NE | 60% |
| Monday | 68°F | Chance Rain Showers | 15 mph NE | 49% |
| Monday Night | 54°F | Chance Rain Showers | 12 to 15 mph NE | 49% |
| Tuesday | 69°F | Chance Rain Showers | 14 mph NE | 41% |
| Tuesday Night | 56°F | Chance Rain Showers | 16 mph NE | 54% |
| Wednesday | 68°F | Chance Rain Showers | 15 mph E | 54% |
| Wednesday Night | 55°F | Chance Rain Showers | 9 to 14 mph E | 41% |
| Thursday | 70°F | Partly Sunny then Slight Chance Rain Showers | 8 to 12 mph NE | 15% |
| Thursday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 6 to 12 mph NE | 15% |
| Friday | 70°F | Mostly Sunny | 6 to 14 mph NE | 12% |
Forecast source: National Weather Service (api.weather.gov) for Harpster (40.738, -83.250). Updated through the day.
Growing snapshot for Harpster
Last spring frost
Apr 29
First fall frost
Oct 17
Growing season
171 days
Hardiness zone
6a
More local growing data for Harpster: nearby ZIP 43323 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Upper Sandusky, Oh (7.1 mi from Harpster). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.