Princeton, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Princeton, a community in Latah County, Idaho.
Tonight
33°F
Partly Cloudy
Partly cloudy, with a low around 33. Wind around 0 mph.
7-day forecast for Princeton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 33°F | Partly Cloudy | 0 mph | 1% |
| Wednesday | 53°F | Patchy Fog then Sunny | 2 mph W | 1% |
| Wednesday Night | 35°F | Partly Cloudy then Rain Showers | 0 to 3 mph SE | 85% |
| Thursday | 48°F | Rain Showers | 3 to 7 mph SW | 85% |
| Thursday Night | 35°F | Partly Cloudy | 2 to 6 mph S | 2% |
| Friday | 51°F | Partly Sunny | 3 to 7 mph SE | 4% |
| Friday Night | 38°F | Mostly Cloudy | 6 mph SE | 8% |
| Saturday | 61°F | Partly Sunny | 7 mph SE | 3% |
| Saturday Night | 41°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 8 mph SE | 15% |
| Sunday | 55°F | Slight Chance Rain Showers | 5 to 9 mph SW | 15% |
| Sunday Night | 38°F | Mostly Cloudy | 5 mph S | 6% |
| Monday | 56°F | Partly Sunny then Slight Chance Rain Showers | 1 to 5 mph SE | 15% |
| Monday Night | 39°F | Slight Chance Rain Showers | 0 to 5 mph SE | 16% |
| Tuesday | 55°F | Slight Chance Rain Showers | 6 mph SE | 22% |
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 Nov 4, 2026.