Princeton, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Princeton, a community in Latah County, Idaho.
Overnight
47°F
Partly Cloudy
Partly cloudy, with a low around 47. Wind around 0 mph.
7-day forecast for Princeton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Partly Cloudy | 0 mph | 1% |
| Saturday | 77°F | Sunny | 0 to 5 mph W | 2% |
| Saturday Night | 48°F | Mostly Clear | 0 to 3 mph NE | 2% |
| Sunday | 80°F | Sunny | 3 mph SE | 0% |
| Sunday Night | 49°F | Clear | 0 to 3 mph E | 0% |
| Monday | 82°F | Sunny | 5 mph S | 0% |
| Monday Night | 51°F | Mostly Clear | 0 to 3 mph N | 0% |
| Tuesday | 79°F | Sunny | 3 mph SW | 0% |
| Tuesday Night | 49°F | Mostly Clear | 0 to 3 mph N | 1% |
| Wednesday | 75°F | Sunny | 1 to 6 mph SW | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Thursday | 75°F | Mostly Sunny | 1 to 5 mph S | 4% |
| Thursday Night | 48°F | Partly Cloudy | 3 mph N | 9% |
| Friday | 71°F | Partly Sunny then Slight Chance Rain Showers | 1 to 6 mph SW | 18% |
Forecast source: National Weather Service (api.weather.gov) for Princeton (46.917, -116.826). Updated through the day.
Growing snapshot for Princeton
Last spring frost
May 15
First fall frost
Sep 21
Growing season
126 days
Hardiness zone
6b
More local growing data for Princeton: nearby ZIP 83857 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Potlatch 3 Nne, Id (5.5 mi from Princeton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.