Richwood, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Richwood, a village in Union County, Ohio.
Today
83°F
Sunny
Sunny, with a high near 83. East wind 0 to 3 mph.
7-day forecast for Richwood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 0 to 3 mph E | 0% |
| Tonight | 62°F | Mostly Clear | 2 mph N | 1% |
| Wednesday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph SW | 26% |
| Wednesday Night | 65°F | Partly Cloudy | 1 to 5 mph SW | 13% |
| Thursday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 9 mph SW | 53% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 7 mph SW | 69% |
| Friday | 84°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 9 mph SW | 69% |
| Friday Night | 66°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 7 mph SW | 66% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 29% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 29% |
| Sunday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 12 mph SW | 19% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 7 to 10 mph SW | 29% |
| Monday | 87°F | Chance Rain Showers | 8 to 13 mph SW | 35% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 7 to 10 mph SW | 41% |
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 Aug 4, 2026.