Stillwater Minnesota Climate Data

Monthly Average Climate Data for Stillwater Minnesota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January6.9 °F24.0 °F0.93 in.
February10.2 °F29.0 °F0.87 in.
March22.2 °F41.3 °F1.62 in.
April35.5 °F56.2 °F3.18 in.
May48.1 °F68.5 °F4.21 in.
June58.5 °F78.3 °F5.05 in.
July63.1 °F82.7 °F4.37 in.
August60.5 °F80.5 °F4.7 in.
September52.2 °F72.8 °F3.53 in.
October39.3 °F58.7 °F3.06 in.
November26.7 °F42.8 °F1.73 in.
December14.3 °F29.1 °F1.28 in.
Annual36.5 °F55.3 °F34.53 in.

Climate Data for Stillwater 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 ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year