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
Partly Sunny
Partly sunny, with a high near 76. Northeast wind around 8 mph.
7-day forecast for Troy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Partly Sunny | 8 mph NE | 1% |
| Tonight | 58°F | Partly Cloudy | 5 to 9 mph NE | 2% |
| Saturday | 81°F | Chance Showers And Thunderstorms | 7 mph SE | 53% |
| Saturday Night | 66°F | Showers And Thunderstorms | 6 mph S | 75% |
| Sunday | 80°F | Showers And Thunderstorms Likely | 5 to 9 mph W | 59% |
| Sunday Night | 60°F | Showers And Thunderstorms Likely | 9 to 13 mph NE | 59% |
| Monday | 72°F | Showers And Thunderstorms Likely | 10 to 14 mph NE | 57% |
| Monday Night | 56°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 47% |
| Tuesday | 71°F | Chance Showers And Thunderstorms | 14 mph NE | 36% |
| Tuesday Night | 57°F | Chance Rain Showers | 9 to 14 mph NE | 38% |
| Wednesday | 70°F | Chance Rain Showers | 10 mph NE | 32% |
| Wednesday Night | 56°F | Slight Chance Rain Showers | 7 to 10 mph N | 17% |
| Thursday | 71°F | Mostly Cloudy | 7 to 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 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 Sep 19, 2026.