| Category | Definition |
|---|---|
| Temperature normals, max. | Normal maximum temperature, degrees F |
| Temperature normals, mean | Average of normal maximum and minimum temperatures, degrees F |
| Temperature normals, min. | Normal minimum temperature, degrees F |
| Precipitation normals | Normal precipitation in snow, rainfall, etc. |
| Degree day normals, CDD | Average temperature, degrees F, minus 65; shows demand for fuel to cool buildings |
| Degree day normals, HDD | 65 minus average temperature, degrees F; shows demand for fuel to heat buildings |
| Highest mean | Maximum Mean Monthly Value/Year, 1971-2000 |
| Median | Median Mean Monthly Value/Year, 1971-2000 |
| Lowest mean | Minimum Mean Monthly Value/Year, 1971-2000 |
| Highest mean year | Year of Maximum Mean, 1971-2000 |
| Lowest mean year | Year of Minimum Mean, 1971-2000 |
| Max. adjustment | Add to MAX to Get Midnight Obs. Schedule |
| Min. adjustment | Add to MIN to Get Midnight Obs. Schedule |