Princeton, ID Weather & Growing Conditions
This Afternoon
74°F
Sunny
Sunny, with a high near 74. Northwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Sunny | 5 mph NW | 1% |
| Tonight | 49°F | Mostly Clear | 2 mph SE | 1% |
| Sunday | 79°F | Sunny | 0 to 5 mph SE | 1% |
| Sunday Night | 50°F | Mostly Clear | 0 to 3 mph E | 0% |
| Monday | 81°F | Sunny | 5 mph SE | 0% |
| Monday Night | 53°F | Mostly Clear | 2 mph E | 0% |
| Tuesday | 78°F | Mostly Sunny | 1 to 5 mph S | 3% |
| Tuesday Night | 50°F | Partly Cloudy | 1 to 5 mph W | 5% |
| Wednesday | 70°F | Mostly Sunny | 1 to 6 mph W | 3% |
| Wednesday Night | 48°F | Partly Cloudy | 0 to 5 mph S | 3% |
| Thursday | 71°F | Mostly Sunny | 1 to 5 mph S | 3% |
| Thursday Night | 48°F | Partly Cloudy | 3 mph NE | 11% |
| Friday | 67°F | Slight Chance Rain Showers | 2 to 6 mph SW | 15% |
| Friday Night | 45°F | Mostly Cloudy | 2 to 6 mph W | 13% |
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 Sep 19, 2026.