Casstown, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Casstown, a village in Miami County, Ohio.
This Afternoon
76°F
Partly Sunny
Partly sunny, with a high near 76. Northeast wind around 9 mph.
7-day forecast for Casstown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Partly Sunny | 9 mph NE | 1% |
| Tonight | 58°F | Partly Cloudy | 6 to 9 mph NE | 2% |
| Saturday | 80°F | Partly Sunny then Chance Showers And Thunderstorms | 7 mph SE | 51% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely | 6 mph S | 73% |
| Sunday | 80°F | Showers And Thunderstorms Likely | 5 to 9 mph W | 60% |
| Sunday Night | 60°F | Showers And Thunderstorms Likely | 12 to 15 mph NE | 60% |
| Monday | 71°F | Showers And Thunderstorms Likely | 14 mph NE | 57% |
| Monday Night | 56°F | Chance Showers And Thunderstorms | 13 to 16 mph NE | 46% |
| Tuesday | 71°F | Chance Showers And Thunderstorms | 12 to 15 mph NE | 37% |
| Tuesday Night | 58°F | Chance Rain Showers | 9 to 16 mph NE | 41% |
| Wednesday | 70°F | Chance Rain Showers | 10 mph NE | 36% |
| Wednesday Night | 57°F | Slight Chance Rain Showers | 7 to 12 mph N | 19% |
| Thursday | 71°F | Mostly Cloudy | 10 mph N | 12% |
| Thursday Night | 55°F | Mostly Cloudy | 6 to 10 mph N | 12% |
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 Sep 18, 2026.