Castine, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Castine, a village in Preble County, Ohio.
Today
82°F
Sunny
Sunny, with a high near 82. Northeast wind around 2 mph.
7-day forecast for Castine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 2 mph NE | 0% |
| Tonight | 61°F | Mostly Clear | 2 mph N | 0% |
| Wednesday | 84°F | Sunny | 1 to 5 mph NW | 3% |
| Wednesday Night | 64°F | Mostly Clear | 5 mph W | 3% |
| Thursday | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 9 mph SW | 48% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph SW | 69% |
| Friday | 82°F | Showers And Thunderstorms Likely | 5 to 8 mph SW | 64% |
| Friday Night | 65°F | Showers And Thunderstorms Likely | 6 mph SW | 62% |
| Saturday | 83°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 27% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SW | 27% |
| Sunday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 12 mph SW | 16% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 9 mph SW | 16% |
| Monday | 86°F | Chance Showers And Thunderstorms | 9 to 13 mph SW | 27% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 7 to 10 mph SW | 34% |
Forecast source: National Weather Service (api.weather.gov) for Castine (39.931, -84.625). Updated through the day.
Growing snapshot for Castine
Last spring frost
Apr 25
First fall frost
Oct 20
Growing season
176 days
Hardiness zone
6a
More local growing data for Castine: nearby ZIP 45382 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Camden
Eaton
Eldorado
Gordon
Gratis
Lake Lakengren
Lewisburg
New Paris
Verona
West Alexandria
West Elkton
West Manchester
Climate data from the nearest NOAA station, Eaton, Oh (11.7 mi from Castine). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.