Broomfield Colorado Climate Data

Monthly Average Climate Data for Broomfield Colorado

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.7 °C7.8 °C14.48 mm
February-6.1 °C8.3 °C17.53 mm
March-2 °C13.2 °C39.62 mm
April1.4 °C16.4 °C59.44 mm
May6.4 °C21.3 °C66.55 mm
June11.6 °C28.1 °C38.61 mm
July15.1 °C31.6 °C46.48 mm
August13.9 °C30.3 °C40.64 mm
September9.3 °C25.9 °C35.05 mm
October2.7 °C18.7 °C32.51 mm
November-2.6 °C12.2 °C21.34 mm
December-6.8 °C7.4 °C14.73 mm
Annual3 °C18.4 °C426.98 mm

Climate Data for Broomfield Colorado

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 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
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