Richwood, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Richwood, a village in Union County, Ohio.
This Afternoon
75°F
Sunny
Sunny, with a high near 75. South wind around 13 mph.
7-day forecast for Richwood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Sunny | 13 mph S | 1% |
| Tonight | 60°F | Partly Cloudy then Slight Chance Rain Showers | 9 to 15 mph S | 18% |
| Wednesday | 66°F | Showers And Thunderstorms | 17 mph S | 98% |
| Wednesday Night | 50°F | Showers And Thunderstorms then Mostly Cloudy | 6 to 17 mph SW | 78% |
| Thursday | 63°F | Mostly Sunny | 7 to 14 mph SW | 0% |
| Thursday Night | 45°F | Partly Cloudy | 2 to 8 mph SW | 1% |
| Friday | 59°F | Partly Sunny then Slight Chance Light Rain | 2 to 8 mph NW | 17% |
| Friday Night | 39°F | Slight Chance Light Rain then Mostly Cloudy | 8 mph NW | 17% |
| Saturday | 53°F | Partly Sunny | 9 mph NW | 13% |
| Saturday Night | 34°F | Partly Cloudy | 2 to 6 mph W | 4% |
| Sunday | 55°F | Mostly Sunny | 3 to 9 mph W | 10% |
| Sunday Night | 34°F | Partly Cloudy | 5 to 8 mph W | 14% |
| Monday | 57°F | Mostly Sunny | 5 to 10 mph W | 14% |
| Monday Night | 37°F | Partly Cloudy | 9 mph SW | 13% |
Forecast source: National Weather Service (api.weather.gov) for Richwood (40.427, -83.294). Updated through the day.
Growing snapshot for Richwood
Last spring frost
Apr 19
First fall frost
Oct 26
Growing season
188 days
Hardiness zone
6a
More local growing data for Richwood: nearby ZIP 43344 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Marysville, Oh (16.9 mi from Richwood). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.