Arkansas design temperatures
Outdoor heating and cooling design conditions for 8 Arkansas weather stations. Choose the station nearest to you in distance and elevation, and check whether your building department specifies its own values.
| Station | Elevation | 99.6 % heating | 99 % heating | 1 % cooling / MCWB | 0.4 % cooling / MCWB | Use it |
|---|---|---|---|---|---|---|
| Eaker AFBWMO 723408 · 1963–1992 | 256 ft | 12 °F | 17 °F | 94 / 77 °F | 96 / 78 °F | Load calculator |
| El Dorado/GoodwinWMO 723419 · 1973–1996 | 253 ft | 19 °F | 23 °F | 95 / 77 °F | 97 / 77 °F | Load calculator |
| Fayetteville/DrakeWMO 723445 · 1973–1996 | 1,250 ft | 7 °F | 12 °F | 92 / 75 °F | 95 / 75 °F | Load calculator |
| Fort SmithWMO 723440 · 1973–1996 | 463 ft | 13 °F | 18 °F | 96 / 76 °F | 98 / 76 °F | Load calculator |
| Harrison/BooneWMO 723446 · 1973–1996 | 1,365 ft | 7 °F | 12 °F | 92 / 75 °F | 94 / 75 °F | Load calculator |
| Little Rock AFBWMO 723405 · 1967–1996 | 312 ft | 16 °F | 21 °F | 95 / 77 °F | 98 / 78 °F | Load calculator |
| Pine Bluff/GriderWMO 723417 · 1973–1996 | 207 ft | 19 °F | 23 °F | 95 / 77 °F | 97 / 78 °F | Load calculator |
| Texarkana/WebbWMO 723418 · 1973–1996 | 390 ft | 20 °F | 25 °F | 95 / 77 °F | 98 / 77 °F | Load calculator |
Using these values
- Heat-loss calculations for homes commonly use the 99 % heating value, and cooling loads the 1 % dry bulb with its mean coincident wet bulb (MCWB). The 99.6 % and 0.4 % values are more conservative.
- “Load calculator” opens the heating and cooling load calculator with that station’s 99 % and 1 % temperatures and its design moisture difference (outdoor air at the 1 % condition versus 75 °F, 50 % RH indoors, at the station’s elevation).
- Source: U.S. Air Force Combat Climatology Center and NOAA National Climatic Data Center, Engineering Weather Data (1999; public domain). Each station’s period of record is shown under its name; they end by 1996, and the climate has warmed since, so check local requirements before relying on a value for a permit.