Heron Lake Minnesota Climate Data

Monthly Average Climate Data for Heron Lake Minnesota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January6.3 °F23.4 °F0.71 in.
February10.1 °F27.8 °F0.84 in.
March22.0 °F40.3 °F1.57 in.
April34.2 °F56.1 °F2.99 in.
May47.0 °F68.3 °F4.19 in.
June58.1 °F78.5 °F4.61 in.
July61.9 °F82.2 °F3.77 in.
August59.0 °F79.7 °F3.7 in.
September50.5 °F73.8 °F3.17 in.
October37.2 °F59.4 °F2.35 in.
November24.2 °F42.6 °F1.3 in.
December12.4 °F28.6 °F0.97 in.
Annual35.2 °F55.1 °F30.17 in.

Climate Data for Heron Lake Minnesota

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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