| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 22.7 | 29.8 | 41.5 | 57.9 | 71.3 | 78.7 | 82.4 | 80.0 | 71.3 | 59.4 | 40.7 | 26.7 | 55.2 |
| Highest Mean Max. Temperature (F) | 36.8 | 42.1 | 53.2 | 69.9 | 80.9 | 89.2 | 91.8 | 86.1 | 81.4 | 67.0 | 54.1 | 37.2 | 91.8 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1998 | 1988 | 1988 | 1988 | 1998 | 2000 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 10.7 | 19.2 | 31.6 | 46.9 | 63.4 | 73.4 | 75.8 | 73.6 | 65.4 | 52.4 | 32.8 | 12.2 | 10.7 |
| Year Lowest Occurred | 1979 | 1979 | 1975 | 1975 | 1974 | 1982 | 1971 | 1986 | 1984 | 1972 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 12.7 | 19.7 | 31.4 | 46.2 | 59.3 | 67.4 | 71.6 | 69.5 | 60.7 | 49.3 | 32.7 | 18.3 | 44.9 |
| Highest Mean Temperature (F) | 26.6 | 32.9 | 41.3 | 54.4 | 66.5 | 74.1 | 77.1 | 74.5 | 68.2 | 54.7 | 42.8 | 28.0 | 77.1 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1998 | 1988 | 1988 | 1995 | 1998 | 2000 | 1999 | 1997 | 1988 |
| Lowest Mean Temperature (F) | -0.2 | 9.1 | 22.5 | 38.0 | 53.0 | 61.5 | 66.1 | 64.7 | 55.4 | 43.0 | 24.9 | 3.7 | -0.2 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1975 | 1979 | 1982 | 1971 | 1986 | 1974 | 1976 | 1985 | 1983 | 1977 |
| Mean Min. Temperature (F) | 2.7 | 9.6 | 21.3 | 34.5 | 47.3 | 56.0 | 60.8 | 59.0 | 50.1 | 39.1 | 24.7 | 9.8 | 34.6 |
| Highest Mean Min. Temperature (F) | 16.4 | 24.7 | 30.2 | 39.9 | 54.9 | 61.8 | 64.6 | 64.2 | 55.0 | 45.1 | 31.5 | 20.8 | 64.6 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1991 | 1983 | 1995 | 1998 | 1973 | 1999 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -11.0 | -2.4 | 13.3 | 29.0 | 41.6 | 49.5 | 55.0 | 55.0 | 43.4 | 32.4 | 16.9 | -4.7 | -11.0 |
| Year Lowest Occurred | 1977 | 1989 | 1975 | 1975 | 1971 | 1982 | 1992 | 1977 | 1974 | 1976 | 1985 | 1983 | 1977 |
| Mean Precipitation (in.) | 0.98 | 0.80 | 1.60 | 2.40 | 3.46 | 4.61 | 4.55 | 4.58 | 3.31 | 2.51 | 1.99 | 0.97 | 31.76 |
| Highest Precipitation (in.) | 2.76 | 2.25 | 4.20 | 5.99 | 6.62 | 10.86 | 9.65 | 10.12 | 7.19 | 5.43 | 5.64 | 3.42 | 10.86 |
| Year Highest Occurred | 1975 | 1981 | 1977 | 1994 | 1991 | 1975 | 1997 | 1980 | 1986 | 1984 | 1991 | 1982 | 1975 |
| Lowest Precipitation (in.) | 0.15 | 0.08 | 0.07 | 0.26 | 0.77 | 0.49 | 1.62 | 1.42 | 0.88 | 0.47 | 0.18 | 0.00 | 0.00 |
| Year Lowest Occurred | 1990 | 1997 | 1987 | 1987 | 1976 | 1988 | 1975 | 1976 | 2000 | 1976 | 1976 | 1980 | 1980 |
| Heating Degree Days (F) | 1623. | 1268. | 1041. | 568. | 238. | 65. | 16. | 37. | 175. | 491. | 969. | 1450. | 7941. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 3. | 61. | 137. | 220. | 177. | 46. | 3. | 0. | 0. | 647. |