Harpster, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harpster, a village in Wyandot County, Ohio.
Today
83°F
Sunny
Sunny, with a high near 83. East wind around 2 mph.
7-day forecast for Harpster
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 2 mph E | 0% |
| Tonight | 62°F | Mostly Clear | 2 mph E | 0% |
| Wednesday | 86°F | Sunny | 0 to 5 mph SW | 10% |
| Wednesday Night | 66°F | Partly Cloudy | 1 to 5 mph SW | 8% |
| Thursday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 9 mph SW | 54% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 7 mph SW | 60% |
| Friday | 84°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 9 mph SW | 61% |
| Friday Night | 66°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 7 mph SW | 61% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 25% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 7 mph SW | 25% |
| Sunday | 87°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 13 mph SW | 17% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 8 to 12 mph SW | 35% |
| Monday | 87°F | Chance Rain Showers | 9 to 13 mph SW | 38% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 8 to 12 mph SW | 46% |
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 Aug 4, 2026.