Princeton, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Princeton, a city in Mercer County, Missouri.
Overnight
48°F
Patchy Drizzle
Patchy drizzle. Cloudy, with a low around 48. West wind around 12 mph, with gusts as high as 21 mph.
7-day forecast for Princeton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Patchy Drizzle | 12 mph W | 12% |
| Wednesday | 54°F | Patchy Drizzle then Mostly Cloudy | 12 to 15 mph W | 9% |
| Wednesday Night | 43°F | Mostly Cloudy | 9 mph W | 2% |
| Thursday | 54°F | Mostly Cloudy | 7 to 10 mph NW | 8% |
| Thursday Night | 42°F | Mostly Cloudy | 7 mph NNW | 7% |
| Friday | 51°F | Partly Sunny | 3 to 8 mph N | 3% |
| Friday Night | 32°F | Partly Cloudy | 2 mph NNE | 1% |
| Saturday | 53°F | Mostly Sunny | 0 to 3 mph SW | 0% |
| Saturday Night | 35°F | Mostly Clear | 2 mph W | 0% |
| Sunday | 60°F | Sunny | 5 mph W | 0% |
| Sunday Night | 37°F | Clear | 3 mph SW | 0% |
| Monday | 65°F | Sunny | 3 to 9 mph SSW | 0% |
| Monday Night | 42°F | Clear | 5 mph W | 0% |
| Tuesday | 66°F | Sunny | 5 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Princeton (40.396, -93.589). Updated through the day.
Growing snapshot for Princeton
Last spring frost
Apr 25
First fall frost
Oct 15
Growing season
174 days
Hardiness zone
5b
More local growing data for Princeton: nearby ZIP 64673 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Princeton, Mo (1.7 mi from Princeton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.