Louisiana design temperatures
Outdoor heating and cooling design conditions for 12 Louisiana 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 |
|---|---|---|---|---|---|---|
| Alexandria/EslerWMO 722487 · 1973–1996 | 112 ft | 25 °F | 29 °F | 94 / 77 °F | 96 / 78 °F | Load calculator |
| Barksdale AFBWMO 722485 · 1967–1996 | 167 ft | 22 °F | 26 °F | 94 / 77 °F | 96 / 77 °F | Load calculator |
| Baton Rouge/RyanWMO 722317 · 1973–1996 | 69 ft | 27 °F | 30 °F | 92 / 77 °F | 94 / 78 °F | Load calculator |
| England AFB/AlexandriaWMO 747540 · 1967–1996 | 89 ft | 26 °F | 29 °F | 94 / 78 °F | 95 / 78 °F | Load calculator |
| Fort PolkWMO 722390 · 1967–1996 | 328 ft | 26 °F | 30 °F | 94 / 77 °F | 95 / 77 °F | Load calculator |
| LafayetteWMO 722405 · 1973–1996 | 43 ft | 28 °F | 32 °F | 92 / 78 °F | 94 / 78 °F | Load calculator |
| Lake CharlesWMO 722400 · 1973–1996 | 33 ft | 29 °F | 32 °F | 92 / 78 °F | 93 / 78 °F | Load calculator |
| MonroeWMO 722486 · 1973–1996 | 79 ft | 22 °F | 26 °F | 94 / 78 °F | 96 / 78 °F | Load calculator |
| New Orleans NASWMO 722316 · 1973–1996 | 0 ft | 29 °F | 33 °F | 92 / 79 °F | 94 / 79 °F | Load calculator |
| New Orleans/InternationalWMO 722310 · 1973–1996 | 30 ft | 30 °F | 34 °F | 92 / 79 °F | 94 / 79 °F | Load calculator |
| New Orleans/LakefrontWMO 722315 · 1973–1996 | 10 ft | 35 °F | 38 °F | 92 / 78 °F | 93 / 78 °F | Load calculator |
| ShreveportWMO 722480 · 1973–1996 | 259 ft | 22 °F | 26 °F | 95 / 77 °F | 97 / 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.