Princeton, ID Weather & Growing Conditions
Overnight
48°F
Haze
Haze before 5am, then haze and areas of smoke. Mostly clear, with a low around 48. Northeast wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Haze | 1 mph NE | 0% |
| Tuesday | 81°F | Areas Of Smoke | 1 to 5 mph N | 0% |
| Tuesday Night | 52°F | Haze | 0 to 3 mph NE | 0% |
| Wednesday | 87°F | Sunny | 0 to 3 mph S | 0% |
| Wednesday Night | 56°F | Patchy Smoke then Clear | 0 to 3 mph NW | 0% |
| Thursday | 91°F | Sunny | 0 to 5 mph S | 0% |
| Thursday Night | 59°F | Clear | 0 to 5 mph SW | 0% |
| Friday | 89°F | Sunny | 0 to 7 mph SW | 0% |
| Friday Night | 57°F | Clear | 1 to 7 mph SW | 0% |
| Saturday | 86°F | Sunny | 2 to 7 mph SW | 0% |
| Saturday Night | 56°F | Mostly Clear | 1 to 7 mph SW | 0% |
| Sunday | 82°F | Sunny | 2 to 6 mph W | 0% |
| Sunday Night | 54°F | Mostly Clear | 0 to 6 mph NW | 0% |
| Monday | 81°F | Sunny | 1 to 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Princeton, ID
Last spring frost
May 15
First fall frost
Sep 21
Growing season
126 days
Hardiness zone
6b
Explore more for Princeton, ID: full frost dates · planting calendar · Idaho frost dates
Climate data from the nearest NOAA station, Potlatch 3 Nne, Id (6.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.