Cooling and Dehumidification Design Conditions for Montana

City Lat. Long. Elev. Std. Pres. Cooling DB / MCWB WB / MCDB DP / MCDB and HR Range of DB
0.4% 1% 2% 0.4% 1% 2% 0.4% 1% 2%
°N °W Meters kPa DB MCWB DB MCWB DB MCWB WB MCDB WB MCDB WB MCDB DP HR MCDB DP HR MCDB DP HR MCDB
Billings 45.80 108.53 1088 88.92 34.1 16.9 32.3 16.6 30.4 16.2 18.6 30.1 17.7 29.1 16.9 28.2 14.7 11.9 21.8 13.7 11.1 21.4 12.7 10.5 20.8 14.3
Bozeman 45.78 111.15 1364 85.98 33.0 16.0 30.8 15.6 29.2 15.1 17.6 28.4 16.6 27.6 15.9 27.0 14.2 11.9 20.5 13.1 11.1 19.4 11.7 10.1 19.0 17.6
Butte 45.95 112.50 1690 82.60 30.2 13.8 28.8 13.3 26.9 13.0 15.6 24.5 14.6 24.7 13.9 24.3 12.2 10.9 16.2 11.0 10.0 17.0 10.0 9.4 16.5 17.5
Cut Bank 48.60 112.37 1175 87.98 30.7 15.3 28.8 14.8 26.8 14.2 16.8 27.3 15.8 26.3 14.9 25.2 13.3 11.0 19.5 11.9 10.0 18.2 10.8 9.3 17.4 14.5
Glasgow 48.22 106.62 700 93.19 34.2 17.6 32.2 17.2 30.2 16.7 19.8 29.4 18.6 28.6 17.7 27.5 16.8 13.0 23.2 15.4 11.9 21.4 14.2 11.0 20.7 14.1
Great Falls, Int’l Airport 47.48 111.37 1115 88.63 33.2 16.0 31.3 15.5 29.4 15.1 17.7 28.8 16.8 27.9 15.9 26.9 14.1 11.5 20.6 12.9 10.6 19.6 11.8 9.9 19.1 15.1
Great Falls, Malmstrom AFB 47.50 111.18 1075 89.06 33.7 16.5 31.6 16.1 29.9 15.7 18.4 29.5 17.4 28.1 16.5 27.0 14.8 12.0 21.5 13.7 11.1 20.5 12.3 10.2 20.2 14.6
Havre 48.55 109.77 792 92.17 34.3 17.1 32.0 16.6 30.2 16.3 19.0 30.4 17.8 28.8 16.9 27.9 15.4 12.0 22.0 14.2 11.1 20.4 13.3 10.5 19.9 15.5
Helena 46.60 112.00 1188 87.84 32.4 15.6 30.7 15.2 28.8 14.8 17.2 27.9 16.3 27.4 15.6 26.6 13.8 11.4 19.9 12.5 10.4 19.1 11.3 9.7 19.1 15.6
Kalispell 48.30 114.27 906 90.90 31.7 16.7 29.8 16.2 27.9 15.7 18.1 28.3 17.2 27.3 16.3 25.9 14.7 11.7 20.7 13.6 10.9 19.6 12.6 10.2 19.4 16.6
Lewistown 47.05 109.47 1270 86.97 31.9 15.9 29.7 15.6 27.8 15.2 18.0 27.4 16.9 26.6 16.1 25.7 14.7 12.2 21.5 13.5 11.3 20.5 12.4 10.5 19.4 15.7
Miles City 46.43 105.87 801 92.07 35.9 18.6 34.1 18.2 32.1 17.7 20.7 31.6 19.6 30.2 18.7 29.1 17.3 13.6 24.6 16.1 12.6 23.7 14.9 11.7 22.8 14.4
Missoula 46.92 114.08 972 90.18 33.0 16.7 31.2 16.2 29.2 15.7 18.1 28.6 17.2 27.9 16.4 27.0 14.7 11.7 20.2 13.5 10.9 20.2 12.6 10.2 18.9 17.4