Princeton, ID Weather & Growing Conditions
Today
82°F
Haze
Haze and patchy smoke before 5pm. Sunny, with a high near 82. North wind 1 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Haze | 1 to 6 mph N | 0% |
| Tonight | 49°F | Areas Of Smoke | 1 to 5 mph E | 0% |
| Wednesday | 86°F | Areas Of Smoke | 3 mph SE | 0% |
| Wednesday Night | 53°F | Patchy Smoke | 2 mph NE | 0% |
| Thursday | 90°F | Sunny | 5 mph S | 0% |
| Thursday Night | 56°F | Clear | 0 to 5 mph N | 0% |
| Friday | 90°F | Sunny | 2 to 8 mph SW | 0% |
| Friday Night | 57°F | Clear | 1 to 8 mph S | 0% |
| Saturday | 88°F | Sunny | 1 to 8 mph SW | 0% |
| Saturday Night | 55°F | Mostly Clear | 2 to 8 mph W | 0% |
| Sunday | 83°F | Sunny | 3 to 8 mph W | 0% |
| Sunday Night | 53°F | Mostly Clear | 0 to 7 mph NW | 0% |
| Monday | 84°F | Sunny | 1 to 6 mph W | 0% |
| Monday Night | 53°F | Mostly Clear | 0 to 6 mph NW | 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 (5.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.