| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 24.5 | 31.0 | 42.2 | 56.4 | 69.5 | 78.2 | 81.9 | 79.4 | 70.9 | 59.2 | 42.6 | 29.4 | 55.4 |
| Highest Mean Max. Temperature (F) | 37.4 | 41.6 | 51.6 | 65.6 | 77.7 | 84.7 | 87.9 | 84.3 | 77.7 | 65.6 | 54.1 | 38.4 | 87.9 |
| Year Highest Occurred | 1990 | 1999 | 2000 | 1987 | 1988 | 1988 | 1988 | 1984 | 1998 | 1971 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 11.0 | 23.3 | 35.2 | 50.0 | 62.0 | 72.6 | 76.5 | 75.2 | 64.1 | 52.1 | 34.5 | 17.7 | 11.0 |
| Year Lowest Occurred | 1977 | 1989 | 1984 | 1975 | 1983 | 1982 | 1992 | 1977 | 1993 | 1976 | 1995 | 1983 | 1977 |
| Mean Temperature (F) | 14.3 | 20.0 | 31.4 | 44.4 | 56.6 | 65.8 | 70.0 | 67.8 | 59.0 | 47.3 | 33.0 | 20.0 | 44.1 |
| Highest Mean Temperature (F) | 26.8 | 32.8 | 39.3 | 50.4 | 62.5 | 71.1 | 74.3 | 74.7 | 63.1 | 54.2 | 39.8 | 27.6 | 74.7 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1985 | 1991 | 1991 | 1983 | 1995 | 1994 | 1971 | 1999 | 1982 | 1995 |
| Lowest Mean Temperature (F) | 0.3 | 9.8 | 24.4 | 38.9 | 50.7 | 60.1 | 65.1 | 63.7 | 53.8 | 40.6 | 24.6 | 7.4 | 0.3 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1975 | 1997 | 1982 | 1992 | 1986 | 1975 | 1988 | 1976 | 1985 | 1977 |
| Mean Min. Temperature (F) | 4.0 | 9.0 | 20.6 | 32.3 | 43.6 | 53.3 | 58.1 | 56.1 | 47.1 | 35.4 | 23.4 | 10.5 | 32.8 |
| Highest Mean Min. Temperature (F) | 16.9 | 25.5 | 28.0 | 38.7 | 52.3 | 58.0 | 63.2 | 65.6 | 53.2 | 42.8 | 29.4 | 20.1 | 65.6 |
| Year Highest Occurred | 1992 | 1998 | 1973 | 1985 | 1991 | 1991 | 1987 | 1995 | 1994 | 1971 | 1998 | 1987 | 1995 |
| Lowest Mean Min. Temperature (F) | -10.4 | -5.2 | 13.3 | 27.7 | 38.4 | 47.6 | 53.6 | 50.3 | 40.4 | 27.7 | 14.5 | -5.1 | -10.4 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1982 | 1971 | 1982 | 1992 | 1992 | 1975 | 1987 | 1976 | 1985 | 1977 |
| Mean Precipitation (in.) | 0.99 | 1.01 | 2.09 | 3.50 | 3.50 | 4.20 | 4.10 | 4.57 | 3.47 | 2.30 | 2.11 | 1.26 | 33.10 |
| Highest Precipitation (in.) | 2.05 | 2.95 | 6.05 | 7.44 | 6.91 | 9.36 | 8.62 | 14.13 | 11.06 | 4.95 | 5.79 | 3.09 | 14.13 |
| Year Highest Occurred | 1998 | 1971 | 1998 | 1973 | 1973 | 2000 | 1999 | 1980 | 1992 | 1995 | 1982 | 2000 | 1980 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.29 | 0.75 | 0.27 | 0.83 | 1.63 | 0.98 | 0.30 | 0.14 | 0.04 | 0.20 | 0.00 |
| Year Lowest Occurred | 1987 | 1991 | 1978 | 1989 | 1981 | 1992 | 1988 | 1984 | 1979 | 1975 | 1976 | 1998 | 1987 |
| Heating Degree Days (F) | 1574. | 1260. | 1043. | 621. | 290. | 74. | 17. | 50. | 201. | 551. | 959. | 1397. | 8037. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 28. | 97. | 173. | 135. | 20. | 2. | 0. | 0. | 455. |