Granby Colorado Climate Data

Monthly Average Climate Data for Granby Colorado

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-17.3 °C-1.9 °C20.32 mm
February-15.5 °C0.4 °C20.57 mm
March-10.1 °C6.1 °C21.34 mm
April-5.4 °C11.2 °C28.96 mm
May-1.2 °C16.8 °C39.37 mm
June2.4 °C22.8 °C27.69 mm
July5.8 °C26.2 °C35.81 mm
August4.8 °C25 °C37.85 mm
September0.8 °C21.2 °C35.81 mm
October-4.4 °C13.9 °C28.7 mm
November-10.1 °C5.6 °C19.56 mm
December-15.9 °C-1.3 °C19.56 mm
Annual-5.5 °C12.2 °C335.54 mm

Climate Data for Granby Colorado

Average First Frost DateAug. 21 - Aug. 31
Average Last Frost DateJun. 21 - Jun. 30
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 4a : -34.4°C to -31.7°C
Plant Hardiness Zone - 2012Zone 4a : -34.4°C to -31.7°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfc - Subarctic With Cool Summers And Year Around Rainfall
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