Princeton, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Princeton, a city in Mille Lacs County, Minnesota.
Tonight
53°F
Chance Rain Showers
A chance of rain showers and patchy fog before 1am, then a chance of drizzle and patchy fog. Cloudy. Low around 53, with temperatures rising to around 56 overnight. East wind around 10 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Princeton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Chance Rain Showers | 10 mph E | 40% |
| Saturday | 64°F | Slight Chance Drizzle then Cloudy | 10 mph NE | 21% |
| Saturday Night | 50°F | Partly Cloudy | 5 to 10 mph NE | 3% |
| Sunday | 67°F | Partly Sunny | 10 to 15 mph NE | 0% |
| Sunday Night | 46°F | Mostly Cloudy | 5 to 10 mph NE | 1% |
| Monday | 64°F | Mostly Cloudy | 5 to 10 mph ENE | 5% |
| Monday Night | 42°F | Mostly Cloudy | 5 mph ENE | 5% |
| Tuesday | 65°F | Mostly Sunny | 5 mph E | 2% |
| Tuesday Night | 43°F | Mostly Clear | 0 to 5 mph ESE | 0% |
| Wednesday | 66°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 47°F | Partly Cloudy | 0 to 5 mph SSE | 10% |
| Thursday | 69°F | Mostly Sunny | 0 to 5 mph S | 13% |
| Thursday Night | 49°F | Partly Cloudy | 0 to 5 mph S | 5% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph ESE | 9% |
Forecast source: National Weather Service (api.weather.gov) for Princeton (45.568, -93.590). Updated through the day.
Growing snapshot for Princeton
Last spring frost
May 7
First fall frost
Sep 28
Growing season
144 days
Hardiness zone
4b
More local growing data for Princeton: nearby ZIP 55371 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Santiago 3 E, Mn (8.4 mi from Princeton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.