Regional Climate

 

City Monthly Temp. (Farenheit/Celsius) Annual Precip. Annual Snowfall
January April July October in cm in cm
Billings MT 21 -6 45 7 72 22 49 9 15.09 38.29 22.5 57.2
Boise ID 30 -1 49 9 75 24 52 11 12.00 30.00 21.3 54.1
Casper WY 22 -6 42 6 71 22 47 8 11.43 29.01 31.7 80.5
Cheyenne WY 26 -3 42 6 69 21 48 9 13.31 33.78 21.3 54.1
Denver CO 30 -1 47 8 73 23 52 11 15.31 38.85 23.5 59.8
Helena MT 18 -8 42 6 68 20 45 7 11.37 28.85 18.9 47.9
Minneapolis MN 11 -12 46 8 73 23 50 10 26.36 66.90 19.2 48.9
Portland OR 39 4 51 11 68 20 55 13 36.30 92.20 6.6 16.8
Rapid City SD 34 1 55 13 83 28 61 16 26.49 67.31 36.0 91.4
Salt Lake City UT 29 -2 49 9 78 26 53 12 15.31 38.85 23.3 59.1
Sioux Falls SD 12 -11 46 8 74 23 49 9 24.12 61.21 15.7 39.9
Spokane WA 26 -3 46 8 70 21 47 8 16.71 41.04 20.3 51.5