Troy, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Troy, a city in Miami County, Ohio.
This Afternoon
76°F
Sunny
Sunny, with a high near 76. South wind around 14 mph.
7-day forecast for Troy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Sunny | 14 mph S | 2% |
| Tonight | 62°F | Mostly Cloudy then Rain Showers Likely | 10 to 15 mph SE | 61% |
| Wednesday | 68°F | Rain Showers | 14 to 18 mph S | 100% |
| Wednesday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 6 to 13 mph SW | 27% |
| Thursday | 65°F | Mostly Sunny | 6 to 14 mph SW | 0% |
| Thursday Night | 45°F | Partly Cloudy | 2 to 8 mph SW | 1% |
| Friday | 60°F | Partly Sunny | 2 to 9 mph NW | 14% |
| Friday Night | 39°F | Partly Cloudy | 6 to 9 mph NW | 14% |
| Saturday | 55°F | Partly Sunny | 8 mph NW | 12% |
| Saturday Night | 34°F | Mostly Cloudy | 5 mph W | 4% |
| Sunday | 57°F | Mostly Sunny | 2 to 10 mph W | 8% |
| Sunday Night | 34°F | Partly Cloudy | 3 to 8 mph W | 12% |
| Monday | 59°F | Mostly Sunny | 3 to 10 mph W | 12% |
| Monday Night | 37°F | Partly Cloudy | 8 mph SW | 12% |
Forecast source: National Weather Service (api.weather.gov) for Troy (40.044, -84.220). Updated through the day.
Growing snapshot for Troy
Last spring frost
Apr 18
First fall frost
Oct 23
Growing season
186 days
Hardiness zone
6a
More local growing data for Troy: nearby ZIP 45373 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Casstown
Covington
Fletcher
Laura
Lockington
Ludlow Falls
Piqua
Pleasant Hill
Potsdam
Tipp City
West Milton
Climate data from the nearest NOAA station, Piqua Wwtp, Oh (7.1 mi from Troy). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.