Ohio design temperatures
Outdoor heating and cooling design conditions for 11 Ohio 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 |
|---|---|---|---|---|---|---|
| Akron-CantonWMO 725210 · 1973–1996 | 1,237 ft | −1 °F | 5 °F | 85 / 71 °F | 88 / 73 °F | Load calculator |
| Cincinnati/LunkinWMO 724297 · 1973–1996 | 482 ft | 4 °F | 10 °F | 90 / 74 °F | 93 / 75 °F | Load calculator |
| Cleveland/HopkinsWMO 725240 · 1973–1996 | 804 ft | 0 °F | 6 °F | 86 / 72 °F | 89 / 74 °F | Load calculator |
| Dayton/James M CoxWMO 724290 · 1973–1996 | 1,004 ft | −1 °F | 5 °F | 88 / 73 °F | 91 / 75 °F | Load calculator |
| Mansfield/LahmWMO 725246 · 1973–1996 | 1,296 ft | −2 °F | 4 °F | 86 / 72 °F | 88 / 73 °F | Load calculator |
| Port ColumbusWMO 724280 · 1973–1996 | 817 ft | 0 °F | 6 °F | 88 / 73 °F | 91 / 74 °F | Load calculator |
| RickenbackerWMO 724285 · 1967–1996 | 745 ft | 2 °F | 7 °F | 88 / 73 °F | 91 / 75 °F | Load calculator |
| ToledoWMO 725360 · 1973–1996 | 692 ft | −3 °F | 3 °F | 88 / 73 °F | 91 / 74 °F | Load calculator |
| Wright-Patterson AFBWMO 745700 · 1967–1996 | 824 ft | 1 °F | 6 °F | 89 / 74 °F | 91 / 75 °F | Load calculator |
| YoungstownWMO 725250 · 1973–1996 | 1,184 ft | 0 °F | 4 °F | 85 / 71 °F | 88 / 73 °F | Load calculator |
| ZanesvilleWMO 724286 · 1973–1996 | 899 ft | 0 °F | 6 °F | 87 / 73 °F | 90 / 75 °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.