Grafton Nebraska Climate Data

Monthly Average Climate Data for Grafton Nebraska

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.8 °C1.7 °C16 mm
February-7.8 °C4.1 °C18.03 mm
March-2.7 °C11.2 °C36.07 mm
April3.1 °C17.2 °C63.5 mm
May9.8 °C22.7 °C122.94 mm
June15.8 °C28.4 °C103.63 mm
July18.2 °C30.4 °C89.66 mm
August16.9 °C29.3 °C89.92 mm
September11.8 °C25.9 °C65.02 mm
October4.6 °C18.9 °C54.36 mm
November-2.5 °C10.6 °C30.48 mm
December-7.6 °C3.6 °C23.37 mm
Annual4.2 °C17 °C712.98 mm

Climate Data for Grafton Nebraska

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsExceptional Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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