Grasston Minnesota Climate Data

Monthly Average Climate Data for Grasston Minnesota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January1.2 °F21.4 °F0.71 in.
February4.7 °F26.8 °F0.85 in.
March17.6 °F39.2 °F1.53 in.
April30.6 °F53.6 °F2.74 in.
May43.1 °F67.0 °F3.87 in.
June53.7 °F76.5 °F4.43 in.
July58.0 °F80.8 °F4.37 in.
August55.3 °F78.8 °F3.97 in.
September46.8 °F70.7 °F3.19 in.
October34.8 °F56.3 °F2.94 in.
November22.5 °F40.0 °F1.61 in.
December9.5 °F26.7 °F1.12 in.
Annual31.5 °F53.2 °F31.33 in.

Climate Data for Grasston 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 4a : -30°F to -25°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year