Princeton, IA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Princeton, a city in Scott County, Iowa.

This Afternoon

67°F

Showers And Thunderstorms

Showers and thunderstorms. Mostly cloudy, with a high near 67. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for Princeton

When	Temp	Forecast	Wind	Precip
This Afternoon	67°F	Showers And Thunderstorms	15 to 20 mph S	94%
Tonight	53°F	Showers And Thunderstorms Likely	10 to 15 mph S	74%
Wednesday	56°F	Slight Chance Rain Showers then Mostly Cloudy	15 mph SW	23%
Wednesday Night	45°F	Slight Chance Rain Showers then Mostly Cloudy	10 to 15 mph SW	18%
Thursday	54°F	Chance Rain Showers	10 to 15 mph W	50%
Thursday Night	42°F	Chance Rain Showers then Mostly Cloudy	5 to 10 mph NW	27%
Friday	52°F	Partly Sunny	5 to 10 mph N	12%
Friday Night	34°F	Partly Cloudy	0 to 5 mph N	1%
Saturday	53°F	Mostly Sunny	0 to 5 mph W	3%
Saturday Night	36°F	Partly Cloudy	5 mph W	4%
Sunday	58°F	Sunny	5 to 10 mph W	11%
Sunday Night	36°F	Mostly Clear	5 mph W	3%
Monday	62°F	Sunny	5 to 10 mph SW	1%
Monday Night	40°F	Mostly Clear	5 mph W	0%

Forecast source: National Weather Service (api.weather.gov) for Princeton (41.669, -90.358). Updated through the day.

Growing snapshot for Princeton

Last spring frost

Apr 16

First fall frost

Oct 25

Growing season

190 days

Hardiness zone

More local growing data for Princeton: nearby ZIP 52768 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Le Claire L&D 14, Ia (8.7 mi from Princeton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.