Princeton, WI Weather & Growing Conditions
Tonight
58°F
Light Rain
Rain. Cloudy, with a low around 58. South wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Light Rain | 10 mph S | 80% |
| Wednesday | 61°F | Chance Light Rain | 10 to 15 mph S | 29% |
| Wednesday Night | 46°F | Light Rain | 10 to 15 mph SW | 76% |
| Thursday | 53°F | Light Rain Likely | 10 mph W | 69% |
| Thursday Night | 33°F | Mostly Cloudy | 10 mph N | 8% |
| Friday | 47°F | Partly Sunny | 5 to 10 mph N | 2% |
| Friday Night | 29°F | Partly Cloudy | 0 to 5 mph N | 2% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph W | 0% |
| Saturday Night | 32°F | Partly Cloudy | 0 to 5 mph W | 9% |
| Sunday | 58°F | Slight Chance Light Rain | 5 to 10 mph W | 16% |
| Sunday Night | 33°F | Mostly Clear | 5 mph W | 2% |
| Monday | 60°F | Mostly Sunny | 5 to 10 mph SW | 1% |
| Monday Night | 37°F | Partly Cloudy | 5 to 10 mph W | 0% |
| Tuesday | 59°F | Sunny | 5 to 10 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Princeton, WI
Last spring frost
May 3
First fall frost
Oct 5
Growing season
153 days
Hardiness zone
5a
Explore more for Princeton, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Montello, Wi (10.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.