Granby Colorado Climate Data

Monthly Average Climate Data for Granby Colorado

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January0.8 °F28.5 °F0.8 in.
February4.1 °F32.7 °F0.81 in.
March13.8 °F42.9 °F0.84 in.
April22.3 °F52.1 °F1.14 in.
May29.9 °F62.3 °F1.55 in.
June36.4 °F73.0 °F1.09 in.
July42.4 °F79.1 °F1.41 in.
August40.7 °F77.0 °F1.49 in.
September33.5 °F70.2 °F1.41 in.
October24.0 °F57.1 °F1.13 in.
November13.9 °F42.1 °F0.77 in.
December3.3 °F29.6 °F0.77 in.
Annual22.1 °F53.9 °F13.21 in.

Climate Data for Granby Colorado

Average First Frost DateAug. 21 - Aug. 31
Average Last Frost DateJun. 11 - Jun. 20
Average Days With FrostOver 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 ClassificationDfc - Subarctic With Cool Summers And Year Around Rainfall
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