Altona Colorado Climate Data

Monthly Average Climate Data for Altona Colorado

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.3 °F45.4 °F0.68 in.
February21.0 °F46.2 °F0.84 in.
March28.1 °F54.8 °F1.67 in.
April33.8 °F60.4 °F2.55 in.
May42.8 °F69.0 °F3.16 in.
June51.9 °F81.2 °F2.06 in.
July58.1 °F87.4 °F1.86 in.
August56.1 °F85.3 °F1.54 in.
September48.4 °F77.5 °F1.97 in.
October37.0 °F64.5 °F1.41 in.
November27.5 °F53.1 °F0.92 in.
December20.2 °F44.8 °F0.67 in.
Annual37.1 °F64.1 °F19.33 in.

Climate Data for Altona Colorado

Average First Frost DateSep. 21 - Sep. 30
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 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation