| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 45.1 | 50.4 | 57.0 | 65.3 | 74.8 | 85.8 | 88.9 | 86.4 | 79.9 | 68.6 | 54.6 | 46.0 | 66.9 |
| Highest Mean Max. Temperature (F) | 55.7 | 57.7 | 66.2 | 73.8 | 81.8 | 90.8 | 92.9 | 89.3 | 85.0 | 74.4 | 65.8 | 55.5 | 92.9 |
| Year Highest Occurred | 1986 | 1995 | 1972 | 1989 | 2000 | 1990 | 1980 | 2000 | 1979 | 1988 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 37.2 | 44.2 | 49.9 | 56.7 | 69.0 | 81.9 | 85.5 | 82.6 | 74.2 | 58.3 | 44.3 | 36.1 | 36.1 |
| Year Lowest Occurred | 1979 | 1998 | 1973 | 1983 | 1995 | 1997 | 1992 | 1999 | 1996 | 1984 | 2000 | 1992 | 1992 |
| Mean Temperature (F) | 28.0 | 33.1 | 38.5 | 44.8 | 54.0 | 63.9 | 69.8 | 68.2 | 60.8 | 48.6 | 36.3 | 28.4 | 47.9 |
| Highest Mean Temperature (F) | 33.9 | 39.0 | 43.9 | 50.5 | 59.0 | 68.2 | 72.4 | 71.3 | 65.1 | 52.5 | 40.3 | 35.8 | 72.4 |
| Year Highest Occurred | 1993 | 1995 | 1972 | 1989 | 1984 | 1990 | 2000 | 1994 | 1997 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Temperature (F) | 21.7 | 28.3 | 34.3 | 38.4 | 49.5 | 60.8 | 67.1 | 65.8 | 56.6 | 44.0 | 31.0 | 19.6 | 19.6 |
| Year Lowest Occurred | 1977 | 1974 | 1977 | 1983 | 1975 | 1992 | 1992 | 1987 | 1985 | 1982 | 2000 | 1990 | 1990 |
| Mean Min. Temperature (F) | 10.9 | 15.8 | 19.9 | 24.3 | 33.2 | 42.0 | 50.7 | 50.0 | 41.6 | 28.6 | 17.9 | 10.7 | 28.8 |
| Highest Mean Min. Temperature (F) | 22.6 | 22.0 | 24.0 | 29.0 | 40.0 | 47.6 | 54.6 | 53.7 | 48.3 | 35.7 | 26.0 | 18.4 | 54.6 |
| Year Highest Occurred | 1993 | 1992 | 1978 | 1990 | 1992 | 2000 | 1999 | 1994 | 1997 | 1974 | 1978 | 1983 | 1999 |
| Lowest Mean Min. Temperature (F) | 3.1 | 8.4 | 12.4 | 19.2 | 27.9 | 37.7 | 46.6 | 45.8 | 36.0 | 22.1 | 12.1 | 1.4 | 1.4 |
| Year Lowest Occurred | 1977 | 1974 | 1988 | 1974 | 1975 | 1975 | 1995 | 1979 | 1973 | 1982 | 1975 | 1990 | 1990 |
| Mean Precipitation (in.) | 0.81 | 0.65 | 0.89 | 0.51 | 0.62 | 0.45 | 1.56 | 1.99 | 1.12 | 1.19 | 0.95 | 0.71 | 11.45 |
| Highest Precipitation (in.) | 2.60 | 2.22 | 2.05 | 3.18 | 2.22 | 1.76 | 3.59 | 6.09 | 2.88 | 3.87 | 2.67 | 2.26 | 6.09 |
| Year Highest Occurred | 1993 | 1980 | 2000 | 1988 | 1992 | 1991 | 1981 | 1999 | 1975 | 1972 | 1978 | 1978 | 1999 |
| Lowest Precipitation (in.) | 0.02 | 0.08 | 0.01 | 0.00 | 0.00 | 0.00 | 0.05 | 0.68 | 0.05 | 0.00 | 0.00 | 0.05 | 0.00 |
| Year Lowest Occurred | 1976 | 1972 | 1997 | 1989 | 1996 | 1998 | 1993 | 1998 | 1989 | 1999 | 1999 | 1989 | 1989 |
| Heating Degree Days (F) | 1148. | 893. | 825. | 606. | 344. | 93. | 6. | 15. | 150. | 509. | 863. | 1136. | 6588. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 4. | 60. | 156. | 114. | 23. | 0. | 0. | 0. | 357. |