| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 32.8 | 39.7 | 49.1 | 60.3 | 70.4 | 80.1 | 87.9 | 87.1 | 75.2 | 62.2 | 45.1 | 35.2 | 60.4 |
| Highest Mean Max. Temperature (F) | 47.1 | 52.9 | 57.4 | 71.6 | 79.4 | 95.4 | 95.4 | 95.1 | 82.4 | 68.3 | 59.4 | 45.9 | 95.4 |
| Year Highest Occurred | 1992 | 1992 | 1986 | 1987 | 1988 | 1988 | 1988 | 1983 | 1979 | 1974 | 1999 | 1979 | 1988 |
| Lowest Mean Max. Temperature (F) | 16.4 | 24.3 | 36.3 | 51.5 | 60.7 | 71.1 | 76.9 | 80.7 | 66.9 | 57.2 | 26.5 | 15.3 | 15.3 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1997 | 1996 | 1998 | 1993 | 1987 | 1986 | 1984 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 20.7 | 27.3 | 35.9 | 46.0 | 56.0 | 65.4 | 72.0 | 70.8 | 59.4 | 47.6 | 32.9 | 23.2 | 46.4 |
| Highest Mean Temperature (F) | 33.0 | 37.1 | 43.5 | 52.9 | 62.1 | 78.5 | 77.2 | 77.9 | 66.3 | 50.7 | 43.6 | 33.2 | 78.5 |
| Year Highest Occurred | 1981 | 1991 | 1986 | 1987 | 1988 | 1988 | 1988 | 1983 | 1998 | 2000 | 1999 | 1999 | 1988 |
| Lowest Mean Temperature (F) | 3.4 | 13.2 | 26.0 | 39.1 | 51.0 | 59.0 | 65.0 | 65.3 | 54.5 | 42.8 | 16.4 | 2.7 | 2.7 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1997 | 1996 | 1998 | 1993 | 1974 | 1984 | 1984 | 1985 | 1983 | 1983 |
| Mean Min. Temperature (F) | 8.6 | 14.9 | 22.6 | 31.7 | 41.5 | 50.7 | 56.1 | 54.5 | 43.5 | 32.9 | 20.7 | 11.2 | 32.4 |
| Highest Mean Min. Temperature (F) | 20.8 | 25.8 | 29.6 | 35.2 | 46.1 | 61.6 | 61.3 | 60.7 | 51.4 | 37.0 | 28.7 | 22.0 | 61.6 |
| Year Highest Occurred | 1981 | 1998 | 1986 | 1978 | 1987 | 1988 | 1998 | 1983 | 1998 | 1998 | 1998 | 1999 | 1988 |
| Lowest Mean Min. Temperature (F) | -9.7 | -0.8 | 15.6 | 26.1 | 35.6 | 45.9 | 47.6 | 48.7 | 39.5 | 28.5 | 6.3 | -9.9 | -9.9 |
| Year Lowest Occurred | 1979 | 1979 | 1996 | 1983 | 1983 | 1985 | 1971 | 1974 | 1975 | 1984 | 1985 | 1983 | 1983 |
| Mean Precipitation (in.) | 0.49 | 0.41 | 0.87 | 1.56 | 2.30 | 2.17 | 1.52 | 0.90 | 1.04 | 1.24 | 0.59 | 0.50 | 13.59 |
| Highest Precipitation (in.) | 1.65 | 1.26 | 3.05 | 3.20 | 7.10 | 4.27 | 5.99 | 2.58 | 3.93 | 5.86 | 2.01 | 1.25 | 7.10 |
| Year Highest Occurred | 1975 | 1978 | 1977 | 1976 | 1978 | 1977 | 1993 | 1976 | 1986 | 1971 | 1978 | 1989 | 1978 |
| Lowest Precipitation (in.) | 0.12 | 0.00 | 0.00 | 0.11 | 0.69 | 0.68 | 0.08 | 0.20 | 0.06 | 0.00 | 0.07 | 0.00 | 0.00 |
| Year Lowest Occurred | 2000 | 1999 | 1994 | 1981 | 1988 | 1974 | 1973 | 1994 | 1975 | 1978 | 1972 | 2000 | 1999 |
| Heating Degree Days (F) | 1374. | 1057. | 904. | 570. | 297. | 104. | 26. | 36. | 207. | 541. | 963. | 1296. | 7375. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 17. | 116. | 243. | 215. | 38. | 0. | 0. | 0. | 629. |