| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Average Max. Temperature (F) | 36.4 | 38.2 | 44.0 | 51.9 | 61.2 | 71.6 | 79.3 | 78.4 | 68.6 | 55.7 | 43.0 | 36.3 | 55.6 |
| Average Min. Temperature (F) | 18.5 | 19.9 | 25.1 | 32.7 | 41.9 | 51.6 | 58.7 | 57.8 | 48.4 | 37.1 | 26.1 | 18.9 | 36.5 |
| Average Total Precipitation (in.) | 0.42 | 0.67 | 1.30 | 2.25 | 4.04 | 3.48 | 2.76 | 2.11 | 1.80 | 1.50 | 0.68 | 0.45 | 21.45 |