Northglenn Colorado Climate Data

Monthly Average Climate Data for Northglenn Colorado

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.1 °C7.7 °C13.46 mm
February-6.3 °C8.3 °C15.75 mm
March-2.2 °C13.2 °C34.54 mm
April1.3 °C16.4 °C54.36 mm
May6.4 °C21.3 °C66.55 mm
June11.6 °C28.2 °C41.15 mm
July14.9 °C31.6 °C50.55 mm
August13.8 °C30.3 °C37.85 mm
September9.2 °C26 °C35.31 mm
October2.5 °C18.7 °C29.21 mm
November-2.9 °C12.2 °C22.61 mm
December-7.2 °C7.3 °C15.24 mm
Annual2.8 °C18.4 °C416.58 mm

Climate Data for Northglenn 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 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate