Harpster, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harpster, a village in Wyandot County, Ohio.
This Afternoon
76°F
Sunny
Sunny, with a high near 76. South wind around 14 mph.
7-day forecast for Harpster
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Sunny | 14 mph S | 1% |
| Tonight | 61°F | Partly Cloudy then Chance Light Rain | 12 to 18 mph SE | 27% |
| Wednesday | 67°F | Light Rain | 21 mph S | 89% |
| Wednesday Night | 52°F | Light Rain Likely | 8 to 21 mph SW | 70% |
| Thursday | 64°F | Mostly Sunny | 9 to 17 mph SW | 3% |
| Thursday Night | 47°F | Partly Cloudy | 3 to 9 mph SW | 2% |
| Friday | 58°F | Chance Light Rain | 3 to 9 mph NW | 25% |
| Friday Night | 40°F | Chance Light Rain | 9 mph NW | 25% |
| Saturday | 53°F | Slight Chance Light Rain | 12 mph NW | 16% |
| Saturday Night | 35°F | Slight Chance Light Rain then Partly Cloudy | 2 to 7 mph W | 16% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Light Rain | 3 to 13 mph W | 17% |
| Sunday Night | 35°F | Slight Chance Light Rain then Partly Cloudy | 10 mph W | 17% |
| Monday | 57°F | Slight Chance Light Rain | 7 to 14 mph W | 17% |
| Monday Night | 39°F | Slight Chance Light Rain then Partly Cloudy | 12 mph SW | 17% |
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 Nov 4, 2026.