Niwot Colorado Climate Data

Monthly Average Climate Data for Niwot Colorado

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.6 °F45.0 °F0.46 in.
February18.8 °F46.4 °F0.56 in.
March26.7 °F56.3 °F1.4 in.
April33.3 °F62.4 °F2.08 in.
May42.8 °F71.0 °F2.63 in.
June51.7 °F83.4 °F1.59 in.
July57.8 °F89.6 °F1.55 in.
August55.5 °F87.4 °F1.62 in.
September47.1 °F79.4 °F1.37 in.
October35.2 °F66.1 °F1.19 in.
November25.0 °F53.6 °F0.74 in.
December16.7 °F44.3 °F0.5 in.
Annual35.6 °F65.4 °F15.69 in.

Climate Data for Niwot 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 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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