Westminster Colorado Climate Data

Monthly Average Climate Data for Westminster Colorado

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.5 °F46.2 °F0.47 in.
February20.8 °F47.2 °F0.58 in.
March28.3 °F56.0 °F1.29 in.
April34.6 °F62.0 °F2.21 in.
May43.7 °F70.9 °F2.66 in.
June53.0 °F83.0 °F1.71 in.
July59.2 °F89.2 °F1.73 in.
August57.2 °F86.9 °F1.68 in.
September48.7 °F79.2 °F1.16 in.
October36.6 °F66.1 °F1.19 in.
November26.9 °F54.2 °F0.81 in.
December19.4 °F45.5 °F0.45 in.
Annual37.3 °F65.5 °F15.94 in.

Climate Data for Westminster 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 : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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