Princeton Iowa Climate Data

Monthly Average Climate Data for Princeton Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.9 °F30.0 °F1.54 in.
February17.5 °F34.5 °F1.77 in.
March28.3 °F47.4 °F2.5 in.
April39.4 °F60.9 °F3.74 in.
May51.2 °F72.2 °F4.76 in.
June61.3 °F81.5 °F4.98 in.
July64.9 °F84.5 °F4.45 in.
August62.7 °F82.5 °F4.08 in.
September54.4 °F76.6 °F3.57 in.
October42.6 °F63.7 °F2.84 in.
November30.6 °F48.6 °F2.27 in.
December20.2 °F35.5 °F2.06 in.
Annual40.6 °F59.8 °F38.56 in.

Climate Data for Princeton Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation