Waltham Minnesota Climate Data

Monthly Average Climate Data for Waltham Minnesota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January6.4 °F22.1 °F1.0 in.
February10.1 °F26.4 °F1.01 in.
March22.2 °F38.8 °F1.87 in.
April34.7 °F54.3 °F3.55 in.
May47.2 °F67.0 °F4.67 in.
June58.0 °F77.0 °F5.58 in.
July61.2 °F80.1 °F4.63 in.
August58.5 °F77.9 °F4.2 in.
September50.2 °F71.7 °F3.76 in.
October37.6 °F58.0 °F2.64 in.
November25.4 °F41.8 °F1.52 in.
December13.5 °F27.8 °F1.27 in.
Annual35.4 °F53.6 °F35.7 in.

Climate Data for Waltham Minnesota

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
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 ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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