Casstown, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Casstown, a village in Miami County, Ohio.
Today
83°F
Sunny
Sunny, with a high near 83. Northeast wind around 2 mph.
7-day forecast for Casstown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 2 mph NE | 0% |
| Tonight | 63°F | Mostly Clear | 2 mph NE | 1% |
| Wednesday | 86°F | Sunny | 0 to 3 mph N | 8% |
| Wednesday Night | 66°F | Partly Cloudy | 3 mph NW | 2% |
| Thursday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 8 mph SW | 46% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 7 mph SW | 69% |
| Friday | 84°F | Showers And Thunderstorms Likely | 3 to 8 mph SW | 69% |
| Friday Night | 66°F | Showers And Thunderstorms Likely | 2 to 6 mph SW | 59% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 29% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 6 mph SW | 29% |
| Sunday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 10 mph SW | 18% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 6 to 9 mph SW | 19% |
| Monday | 87°F | Chance Showers And Thunderstorms | 7 to 12 mph SW | 28% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 6 to 9 mph SW | 36% |
Forecast source: National Weather Service (api.weather.gov) for Casstown (40.053, -84.129). Updated through the day.
Growing snapshot for Casstown
Last spring frost
Apr 24
First fall frost
Oct 17
Growing season
173 days
Hardiness zone
6a
More local growing data for Casstown: nearby ZIP 45312 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Covington
Fletcher
Laura
Lockington
Ludlow Falls
Piqua
Pleasant Hill
Potsdam
Tipp City
Troy
West Milton
Climate data from the nearest NOAA station, New Carlisle, Oh (8.9 mi from Casstown). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.