Heating and Wind Design Conditions for Iowa

City Lat. Long. Elev. Std. Pres. Heating Dry Bulb, °C Extreme Wind Speed, m/s Coldest Month WS / MCDB MCWS / MCWD to DB Annual Extreme Daily
0.4% 1% 99.6% 0.4% Mean DB Std. DB
°N °W Meters kPa 99.6% 99% 1% 2.5% 5% WS MCDB WS MCDB MCWS PWD MCWS PWD Max Min Max Min
Burlington 40.78 91.13 213 98.79 -20.0 -17.4 9.4 8.4 7.7 10.5 -11.0 9.5 -7.7 3.9 310 4.9 200 36.4 -23.5 2.2 3.8
Cedar Rapids 41.88 91.70 265 98.18 -24.0 -20.6 11.2 9.9 9.0 13.1 -11.3 11.6 -9.9 4.6 300 4.7 180 35.5 -26.3 2.0 3.0
Des Moines 41.53 93.65 294 97.84 -22.7 -19.9 12.1 10.6 9.4 12.3 -9.8 10.8 -7.2 4.9 320 5.5 180 36.5 -26.2 1.9 2.8
Fort Dodge 42.55 94.18 355 97.13 -25.0 -21.9 11.9 10.4 9.3 12.9 -12.2 11.5 -12.3 4.7 340 5.0 190 35.5 -27.4 2.7 2.7
Lamoni 40.62 93.95 342 97.28 -21.1 -17.7 8.7 7.6 6.9 9.5 -5.0 8.5 -6.9 3.2 320 3.9 210 37.0 -24.3 2.4 3.8
Mason City 43.15 93.33 370 96.96 -26.2 -23.5 12.2 10.4 9.7 13.3 -12.6 11.8 -11.3 5.3 300 6.3 200 35.9 -30.4 2.0 6.3
Ottumwa 41.10 92.45 258 98.26 -20.6 -17.9 13.0 11.6 10.4 13.7 -6.5 12.6 -4.5 5.9 320 6.5 200 36.7 -24.2 2.2 3.8
Sioux City 42.40 96.38 336 97.35 -23.8 -21.1 12.9 11.2 10.0 14.0 -9.8 12.3 -8.8 4.7 320 6.4 180 37.2 -27.6 2.0 2.6
Spencer 43.17 95.15 408 96.52 -26.5 -23.8 10.6 9.7 8.8 11.3 -10.3 10.1 -10.7 4.6 300 5.4 180 37.3 -29.1 3.5 2.2
Waterloo 42.55 92.40 268 98.15 -25.7 -22.9 12.1 10.8 9.7 12.8 -12.1 11.2 -10.4 4.1 300 5.9 180 35.5 -29.1 1.9 3.3