Troy, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Troy, a city in Latah County, Idaho.
Tonight
32°F
Mostly Cloudy then Patchy Fog
Patchy fog after 5am. Mostly cloudy, with a low around 32. Northwest wind around 1 mph.
7-day forecast for Troy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 32°F | Mostly Cloudy then Patchy Fog | 1 mph NW | 6% |
| Wednesday | 51°F | Patchy Fog then Sunny | 2 mph W | 1% |
| Wednesday Night | 34°F | Partly Cloudy then Rain Showers Likely | 1 mph E | 63% |
| Thursday | 47°F | Rain Showers Likely | 1 to 6 mph S | 63% |
| Thursday Night | 32°F | Partly Cloudy | 5 mph SE | 3% |
| Friday | 49°F | Mostly Cloudy | 6 mph SE | 7% |
| Friday Night | 35°F | Mostly Cloudy | 5 mph SE | 7% |
| Saturday | 58°F | Partly Sunny | 6 mph SE | 2% |
| Saturday Night | 38°F | Mostly Cloudy | 6 mph SE | 12% |
| Sunday | 55°F | Slight Chance Rain Showers | 5 to 8 mph SW | 21% |
| Sunday Night | 36°F | Mostly Cloudy | 5 mph SE | 14% |
| Monday | 53°F | Mostly Cloudy then Slight Chance Rain Showers | 1 to 5 mph SE | 19% |
| Monday Night | 36°F | Slight Chance Rain Showers | 3 mph E | 19% |
| Tuesday | 56°F | Chance Rain Showers | 5 mph SE | 26% |
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 Nov 4, 2026.