Casstown, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Casstown, a village in Miami County, Ohio.
Tonight
61°F
Mostly Cloudy then Rain Showers Likely
Rain showers likely after 2am. Mostly cloudy, with a low around 61. Southeast wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Casstown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Mostly Cloudy then Rain Showers Likely | 13 to 16 mph SE | 63% |
| Wednesday | 68°F | Showers And Thunderstorms | 15 to 18 mph S | 100% |
| Wednesday Night | 51°F | Chance Rain Showers then Mostly Cloudy | 7 to 14 mph SW | 42% |
| Thursday | 64°F | Mostly Sunny | 7 to 15 mph SW | 0% |
| Thursday Night | 45°F | Partly Cloudy | 2 to 8 mph W | 1% |
| Friday | 59°F | Partly Sunny | 2 to 9 mph NW | 14% |
| Friday Night | 39°F | Partly Cloudy | 9 mph NW | 14% |
| Saturday | 54°F | Slight Chance Light Rain | 8 mph NW | 20% |
| Saturday Night | 35°F | Partly Cloudy | 2 to 6 mph W | 11% |
| Sunday | 56°F | Mostly Sunny then Slight Chance Light Rain | 3 to 12 mph W | 15% |
| Sunday Night | 35°F | Slight Chance Light Rain then Partly Cloudy | 6 to 10 mph W | 15% |
| Monday | 59°F | Slight Chance Light Rain | 5 to 13 mph W | 16% |
| Monday Night | 38°F | Mostly Clear | 10 mph SW | 13% |
| Tuesday | 63°F | Sunny | 8 to 12 mph W | 3% |
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 Nov 4, 2026.