Isle Minnesota Climate Data

Monthly Average Climate Data for Isle Minnesota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January-0.4 °F19.4 °F0.64 in.
February3.0 °F25.1 °F0.78 in.
March15.9 °F37.4 °F1.49 in.
April30.1 °F51.4 °F2.62 in.
May42.4 °F64.8 °F3.63 in.
June52.7 °F74.2 °F4.57 in.
July57.1 °F78.7 °F4.46 in.
August54.7 °F76.7 °F3.95 in.
September46.8 °F68.6 °F3.03 in.
October35.0 °F54.1 °F3.06 in.
November22.4 °F38.1 °F1.51 in.
December9.0 °F24.9 °F1.04 in.
Annual30.7 °F51.1 °F30.78 in.

Climate Data for Isle Minnesota

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4a : -30°F to -25°F
Plant Hardiness Zone - 2012Zone 3b : -35°F to -30°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year