| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 42.5 | 46.5 | 53.8 | 59.8 | 67.0 | 73.3 | 81.3 | 81.2 | 74.9 | 62.9 | 48.6 | 40.0 | 61.1 |
| Highest Mean Max. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Max. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Temperature (F) | 35.1 | 37.4 | 42.9 | 47.4 | 53.7 | 59.1 | 65.1 | 64.8 | 58.7 | 49.5 | 40.1 | 33.3 | 49.0 |
| Highest Mean Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Min. Temperature (F) | 27.6 | 28.3 | 31.9 | 35.1 | 40.4 | 45.0 | 48.8 | 48.3 | 42.6 | 36.1 | 31.7 | 26.6 | 36.9 |
| Highest Mean Min. Temperature (F) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Mean Min. Temperature (F) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Mean Precipitation (in.) | 5.74 | 4.04 | 3.09 | 2.10 | 1.43 | 1.09 | 0.33 | 0.43 | 0.94 | 2.68 | 6.04 | 6.19 | 34.10 |
| Highest Precipitation (in.) | |||||||||||||
| Year Highest Occurred | |||||||||||||
| Lowest Precipitation (in.) | |||||||||||||
| Year Lowest Occurred | |||||||||||||
| Heating Degree Days (F) | 928. | 773. | 687. | 526. | 355. | 193. | 71. | 75. | 201. | 481. | 745. | 983. | 6019. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 4. | 18. | 73. | 67. | 14. | 0. | 0. | 0. | 176. |