Harrison, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harrison, a city in Hamilton County, Ohio.
This Afternoon
68°F
Chance Light Rain
A chance of rain. Mostly cloudy, with a high near 68. South wind around 9 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Harrison
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Chance Light Rain | 9 mph S | 37% |
| Tonight | 47°F | Slight Chance Light Rain then Mostly Cloudy | 2 to 7 mph SW | 19% |
| Thursday | 65°F | Mostly Sunny | 3 to 12 mph SW | 0% |
| Thursday Night | 42°F | Partly Cloudy | 1 to 5 mph W | 4% |
| Friday | 57°F | Mostly Cloudy | 1 to 8 mph NW | 11% |
| Friday Night | 33°F | Mostly Cloudy | 2 to 7 mph NW | 8% |
| Saturday | 54°F | Mostly Sunny | 2 to 7 mph NW | 0% |
| Saturday Night | 30°F | Partly Cloudy | 0 to 3 mph NW | 0% |
| Sunday | 57°F | Sunny | 1 to 8 mph W | 0% |
| Sunday Night | 31°F | Mostly Clear | 3 mph W | 0% |
| Monday | 61°F | Sunny | 0 to 6 mph W | 0% |
| Monday Night | 34°F | Clear | 3 mph SW | 0% |
| Tuesday | 64°F | Sunny | 2 to 7 mph W | 1% |
| Tuesday Night | 34°F | Mostly Clear | 0 to 3 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Harrison (39.257, -84.786). Updated through the day.
Growing snapshot for Harrison
Last spring frost
Apr 16
First fall frost
Oct 28
Growing season
193 days
Hardiness zone
6b
More local growing data for Harrison: nearby ZIP 45030 weather · frost dates · planting calendar · Ohio frost dates
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Climate data from the nearest NOAA station, Cheviot 3 W, Oh (8.6 mi from Harrison). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.