Troy, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Troy, a city in Latah County, Idaho.
Overnight
43°F
Haze
Haze and patchy smoke. Mostly clear. Low around 43, with temperatures rising to around 45 overnight. Northeast wind around 2 mph.
7-day forecast for Troy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 43°F | Haze | 2 mph NE | 0% |
| Tuesday | 83°F | Haze | 1 to 6 mph NE | 0% |
| Tuesday Night | 46°F | Mostly Clear | 1 to 5 mph N | 0% |
| Wednesday | 88°F | Sunny | 3 mph SE | 0% |
| Wednesday Night | 49°F | Clear | 3 mph N | 0% |
| Thursday | 93°F | Sunny | 1 to 5 mph SE | 0% |
| Thursday Night | 54°F | Clear | 0 to 3 mph NE | 0% |
| Friday | 91°F | Sunny | 1 to 10 mph SW | 0% |
| Friday Night | 53°F | Clear | 1 to 10 mph W | 0% |
| Saturday | 88°F | Sunny | 1 to 9 mph W | 0% |
| Saturday Night | 52°F | Mostly Clear | 2 to 9 mph W | 0% |
| Sunday | 84°F | Sunny | 2 to 8 mph W | 0% |
| Sunday Night | 49°F | Mostly Clear | 1 to 8 mph NW | 0% |
| Monday | 83°F | Sunny | 1 to 7 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Troy (46.738, -116.773). Updated through the day.
Growing snapshot for Troy
Growing season
85 days
Hardiness zone
6b
More local growing data for Troy: nearby ZIP 83871 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Moscow U Of I, Id (10.1 mi from Troy). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.