Fort Collins Colorado Climate Data

Monthly Average Climate Data for Fort Collins Colorado

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.5 °F42.3 °F0.43 in.
February17.5 °F44.1 °F0.47 in.
March25.4 °F54.1 °F1.27 in.
April32.5 °F60.5 °F1.96 in.
May42.2 °F69.0 °F2.94 in.
June51.5 °F80.8 °F1.77 in.
July57.0 °F87.0 °F1.71 in.
August54.7 °F84.7 °F1.4 in.
September46.2 °F77.2 °F1.45 in.
October34.3 °F63.7 °F1.24 in.
November23.7 °F51.3 °F0.72 in.
December15.4 °F41.9 °F0.47 in.
Annual34.7 °F63.1 °F15.83 in.

Climate Data for Fort Collins 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 ConditionsModerate Drought
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate