Grand Junction Colorado Climate Data

Monthly Average Climate Data for Grand Junction Colorado

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.2 °F39.1 °F0.59 in.
February25.0 °F47.0 °F0.58 in.
March32.5 °F58.6 °F0.78 in.
April38.9 °F65.8 °F0.92 in.
May48.2 °F76.2 °F0.87 in.
June56.9 °F88.4 °F0.47 in.
July63.6 °F93.7 °F0.77 in.
August61.9 °F90.5 °F0.79 in.
September52.4 °F82.0 °F1.22 in.
October40.5 °F67.8 °F1.09 in.
November29.0 °F52.8 °F0.6 in.
December19.8 °F39.8 °F0.51 in.
Annual40.7 °F66.8 °F9.19 in.

Climate Data for Grand Junction Colorado

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 7a : 0°F to 5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate