Denver Colorado Climate Data

Monthly Average Climate Data for Denver Colorado

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7 °C8 °C12.95 mm
February-6.2 °C8.4 °C15.49 mm
March-1.8 °C13.4 °C33.02 mm
April1.8 °C16.7 °C53.09 mm
May6.9 °C21.6 °C59.69 mm
June12.2 °C28.3 °C41.66 mm
July15.7 °C31.8 °C51.05 mm
August14.6 °C30.5 °C43.69 mm
September9.7 °C26.2 °C30.23 mm
October2.8 °C18.8 °C27.94 mm
November-2.7 °C12.4 °C19.05 mm
December-7.2 °C7.5 °C13.46 mm
Annual3.2 °C18.6 °C401.32 mm

Climate Data for Denver Colorado

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 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 ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
2024 plantmaps.com