Troy, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Troy, a city in Latah County, Idaho.
This Afternoon
73°F
Sunny
Sunny. High near 73, with temperatures falling to around 70 in the afternoon. Northwest wind around 6 mph.
7-day forecast for Troy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Sunny | 6 mph NW | 1% |
| Tonight | 46°F | Partly Cloudy | 0 to 5 mph NW | 1% |
| Saturday | 74°F | Sunny | 0 to 5 mph NW | 1% |
| Saturday Night | 46°F | Mostly Clear | 2 mph NE | 0% |
| Sunday | 78°F | Sunny | 1 to 5 mph E | 0% |
| Sunday Night | 47°F | Clear | 2 mph E | 0% |
| Monday | 79°F | Sunny | 5 mph S | 0% |
| Monday Night | 48°F | Mostly Clear | 3 mph N | 0% |
| Tuesday | 76°F | Mostly Sunny | 3 mph SE | 1% |
| Tuesday Night | 47°F | Partly Cloudy | 3 mph NW | 1% |
| Wednesday | 72°F | Sunny | 1 to 5 mph NW | 1% |
| Wednesday Night | 45°F | Partly Cloudy | 2 mph NE | 1% |
| Thursday | 77°F | Sunny | 2 to 6 mph E | 1% |
| Thursday Night | 47°F | Partly Cloudy | 3 mph NE | 4% |
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 Sep 19, 2026.