| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 25.9 | 32.8 | 44.3 | 59.7 | 73.0 | 81.2 | 85.3 | 82.6 | 74.4 | 61.8 | 44.3 | 30.3 | 58.0 |
| Highest Mean Max. Temperature (F) | 38.5 | 41.9 | 54.2 | 70.6 | 82.8 | 88.7 | 90.5 | 87.9 | 81.2 | 69.6 | 55.0 | 40.2 | 90.5 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 14.7 | 22.7 | 36.0 | 50.8 | 65.9 | 74.8 | 76.9 | 78.3 | 66.7 | 56.4 | 35.8 | 15.9 | 14.7 |
| Year Lowest Occurred | 1979 | 1979 | 1975 | 1975 | 1973 | 1982 | 1992 | 1986 | 1993 | 1980 | 1991 | 1985 | 1979 |
| Mean Temperature (F) | 17.6 | 24.3 | 35.7 | 49.8 | 62.2 | 71.1 | 75.8 | 73.2 | 64.4 | 52.3 | 37.1 | 23.1 | 48.9 |
| Highest Mean Temperature (F) | 30.6 | 35.7 | 44.0 | 58.3 | 72.8 | 76.2 | 80.9 | 78.3 | 70.4 | 59.7 | 44.8 | 33.7 | 80.9 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1988 | 1983 | 1995 | 1998 | 1971 | 1999 | 1987 | 1983 |
| Lowest Mean Temperature (F) | 5.4 | 12.2 | 26.0 | 41.7 | 56.9 | 64.6 | 68.6 | 68.5 | 58.5 | 47.5 | 27.9 | 7.2 | 5.4 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1975 | 1997 | 1982 | 1992 | 1986 | 1993 | 1980 | 1991 | 1985 | 1977 |
| Mean Min. Temperature (F) | 9.2 | 15.8 | 27.0 | 39.8 | 51.3 | 60.9 | 66.3 | 63.7 | 54.4 | 42.8 | 29.8 | 15.9 | 39.7 |
| Highest Mean Min. Temperature (F) | 22.7 | 29.5 | 36.5 | 49.3 | 62.8 | 66.3 | 72.4 | 69.7 | 59.6 | 51.5 | 40.2 | 29.7 | 72.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1971 | 1977 | 1995 | 1998 | 1971 | 1987 | 1987 | 1977 |
| Lowest Mean Min. Temperature (F) | -4.3 | 1.8 | 16.0 | 32.7 | 45.8 | 54.5 | 60.2 | 58.7 | 48.5 | 37.2 | 20.0 | -1.5 | -4.3 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1975 | 1989 | 1982 | 1992 | 1986 | 1974 | 1991 | 1991 | 1985 | 1977 |
| Mean Precipitation (in.) | 1.44 | 0.74 | 1.78 | 3.53 | 3.93 | 4.16 | 4.39 | 4.72 | 3.85 | 2.18 | 2.18 | 1.30 | 34.20 |
| Highest Precipitation (in.) | 6.73 | 3.50 | 3.60 | 10.30 | 6.98 | 8.78 | 10.01 | 10.95 | 11.04 | 4.90 | 5.80 | 2.88 | 11.04 |
| Year Highest Occurred | 1998 | 1971 | 1976 | 1999 | 1973 | 2000 | 1978 | 1998 | 1986 | 1979 | 1991 | 1982 | 1986 |
| Lowest Precipitation (in.) | 0.03 | 0.00 | 0.00 | 0.46 | 0.83 | 0.97 | 0.71 | 0.88 | 0.24 | 0.15 | 0.04 | 0.25 | 0.00 |
| Year Lowest Occurred | 1991 | 1997 | 1999 | 1996 | 1996 | 1982 | 1975 | 1976 | 1979 | 1992 | 1976 | 1986 | 1997 |
| Heating Degree Days (F) | 1472. | 1139. | 910. | 468. | 176. | 22. | 5. | 8. | 102. | 400. | 839. | 1298. | 6839. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 11. | 88. | 203. | 339. | 259. | 84. | 6. | 0. | 0. | 990. |