| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.9 | 37.2 | 49.1 | 59.0 | 68.0 | 78.1 | 84.3 | 82.5 | 73.7 | 60.6 | 43.5 | 32.8 | 58.3 |
| Highest Mean Max. Temperature (F) | 41.8 | 47.3 | 56.5 | 68.2 | 73.9 | 83.7 | 89.1 | 86.0 | 79.8 | 68.2 | 52.1 | 43.9 | 89.1 |
| Year Highest Occurred | 1981 | 1995 | 1972 | 1992 | 1994 | 1994 | 2000 | 2000 | 1979 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 18.2 | 25.4 | 40.7 | 51.2 | 61.0 | 72.3 | 79.9 | 78.7 | 67.4 | 53.2 | 35.1 | 21.1 | 18.2 |
| Year Lowest Occurred | 1973 | 1973 | 1973 | 1975 | 1995 | 1975 | 1973 | 1987 | 1986 | 1984 | 1971 | 1978 | 1973 |
| Mean Temperature (F) | 19.8 | 25.4 | 36.7 | 45.2 | 54.0 | 63.1 | 69.3 | 67.8 | 59.0 | 47.0 | 32.3 | 22.0 | 45.1 |
| Highest Mean Temperature (F) | 29.4 | 35.6 | 43.0 | 51.5 | 58.5 | 67.7 | 73.4 | 72.0 | 64.4 | 54.1 | 38.4 | 32.0 | 73.4 |
| Year Highest Occurred | 2000 | 1995 | 1986 | 1992 | 1992 | 1977 | 2000 | 2000 | 1990 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Temperature (F) | 5.8 | 12.0 | 29.7 | 39.2 | 49.5 | 58.1 | 64.5 | 64.6 | 54.4 | 41.6 | 24.9 | 8.9 | 5.8 |
| Year Lowest Occurred | 1973 | 1973 | 1973 | 1975 | 1995 | 1975 | 1993 | 1975 | 1971 | 1984 | 1971 | 1978 | 1973 |
| Mean Min. Temperature (F) | 8.6 | 13.5 | 24.3 | 31.3 | 40.0 | 48.0 | 54.3 | 53.0 | 44.3 | 33.4 | 21.0 | 11.1 | 31.9 |
| Highest Mean Min. Temperature (F) | 20.0 | 23.9 | 29.9 | 37.1 | 44.1 | 53.7 | 59.0 | 58.0 | 49.9 | 40.0 | 25.0 | 20.1 | 59.0 |
| Year Highest Occurred | 2000 | 1995 | 1986 | 1990 | 1992 | 1988 | 1985 | 2000 | 1990 | 1988 | 1998 | 1980 | 1985 |
| Lowest Mean Min. Temperature (F) | -6.7 | -1.3 | 18.6 | 25.7 | 36.4 | 43.9 | 48.0 | 49.6 | 38.6 | 29.9 | 14.5 | -3.3 | -6.7 |
| Year Lowest Occurred | 1973 | 1973 | 1976 | 1982 | 1975 | 1998 | 1993 | 1980 | 1971 | 1976 | 1979 | 1978 | 1973 |
| Mean Precipitation (in.) | 0.57 | 0.54 | 0.64 | 0.81 | 1.17 | 0.67 | 0.75 | 0.84 | 1.10 | 1.19 | 0.60 | 0.42 | 9.30 |
| Highest Precipitation (in.) | 2.16 | 1.23 | 1.77 | 2.64 | 3.92 | 2.88 | 2.51 | 2.68 | 2.63 | 3.82 | 2.22 | 1.61 | 3.92 |
| Year Highest Occurred | 1980 | 1980 | 1975 | 1999 | 1995 | 1998 | 1987 | 1997 | 1997 | 1994 | 1978 | 1971 | 1995 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1972 | 1988 | 1999 | 1992 | 1974 | 1981 | 2000 | 1996 | 1987 | 1999 | 1995 | 1989 | 1972 |
| Heating Degree Days (F) | 1403. | 1110. | 879. | 596. | 345. | 120. | 20. | 29. | 202. | 558. | 983. | 1335. | 7580. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 3. | 61. | 153. | 114. | 21. | 0. | 0. | 0. | 352. |