Harpster, OH Weather & Growing Conditions
Overnight
62°F
Chance Light Rain
A chance of rain after 5am. Mostly cloudy, with a low around 62. South wind 15 to 18 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Chance Light Rain | 15 to 18 mph S | 27% |
| Wednesday | 67°F | Light Rain | 21 mph S | 89% |
| Wednesday Night | 52°F | Light Rain Likely | 8 to 22 mph SW | 71% |
| 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 10 mph NW | 25% |
| Friday Night | 40°F | Chance Light Rain | 9 mph NW | 25% |
| Saturday | 54°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 | 58°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% |
| Tuesday | 62°F | Mostly Sunny | 10 to 14 mph W | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harpster, OH
Last spring frost
Apr 29
First fall frost
Oct 17
Growing season
171 days
Hardiness zone
6a
Explore more for Harpster, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Upper Sandusky, Oh (7.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.