| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.7 | 50.4 | 56.1 | 62.2 | 72.0 | 82.7 | 88.3 | 86.1 | 78.7 | 67.7 | 53.7 | 47.5 | 66.0 |
| Highest Mean Max. Temperature (F) | 58.3 | 57.9 | 64.6 | 72.6 | 77.1 | 87.9 | 92.4 | 90.3 | 84.0 | 71.6 | 65.4 | 58.9 | 92.4 |
| Year Highest Occurred | 1986 | 1999 | 1986 | 1981 | 1974 | 1990 | 1980 | 1995 | 1990 | 1990 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 36.5 | 36.6 | 49.8 | 54.6 | 62.1 | 76.7 | 85.1 | 83.0 | 73.0 | 56.7 | 43.6 | 31.5 | 31.5 |
| Year Lowest Occurred | 1979 | 1989 | 1983 | 1984 | 1995 | 1995 | 1992 | 1993 | 1973 | 1984 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 31.2 | 34.8 | 40.7 | 47.2 | 56.4 | 65.9 | 71.5 | 69.2 | 61.3 | 50.3 | 38.3 | 32.1 | 49.9 |
| Highest Mean Temperature (F) | 40.3 | 41.0 | 47.5 | 54.7 | 60.8 | 70.3 | 74.2 | 73.1 | 66.4 | 53.1 | 46.8 | 41.7 | 74.2 |
| Year Highest Occurred | 1986 | 2000 | 1986 | 1981 | 1994 | 1994 | 2000 | 1995 | 1998 | 1979 | 1999 | 1980 | 2000 |
| Lowest Mean Temperature (F) | 21.0 | 23.3 | 36.3 | 40.6 | 50.7 | 62.1 | 68.3 | 66.0 | 57.2 | 42.7 | 30.5 | 19.2 | 19.2 |
| Year Lowest Occurred | 1979 | 1989 | 1984 | 1984 | 1995 | 1982 | 1992 | 1978 | 1974 | 1984 | 1985 | 1983 | 1983 |
| Mean Min. Temperature (F) | 15.6 | 19.2 | 25.2 | 32.2 | 40.8 | 49.0 | 54.7 | 52.2 | 43.9 | 32.8 | 22.8 | 16.7 | 33.8 |
| Highest Mean Min. Temperature (F) | 22.9 | 25.5 | 30.4 | 36.7 | 45.5 | 53.3 | 58.3 | 56.5 | 49.3 | 36.2 | 29.2 | 24.5 | 58.3 |
| Year Highest Occurred | 1999 | 2000 | 1986 | 1981 | 1994 | 1994 | 1999 | 2000 | 1998 | 1998 | 1998 | 1980 | 1999 |
| Lowest Mean Min. Temperature (F) | 5.5 | 9.9 | 20.5 | 26.6 | 37.8 | 45.4 | 51.5 | 47.0 | 37.9 | 28.3 | 17.3 | 6.9 | 5.5 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1984 | 1975 | 1975 | 1992 | 1978 | 1974 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.63 | 0.64 | 1.83 | 2.25 | 2.60 | 2.05 | 1.78 | 1.87 | 1.16 | 1.32 | 1.18 | 0.86 | 18.17 |
| Highest Precipitation (in.) | 1.32 | 1.69 | 5.28 | 6.69 | 6.15 | 4.59 | 3.36 | 4.16 | 2.73 | 6.14 | 3.08 | 2.51 | 6.69 |
| Year Highest Occurred | 1980 | 1987 | 1983 | 1999 | 1995 | 1991 | 1990 | 1997 | 1989 | 1984 | 1983 | 1987 | 1999 |
| Lowest Precipitation (in.) | 0.11 | 0.01 | 0.32 | 0.26 | 0.63 | 0.20 | 0.40 | 0.24 | 0.00 | 0.10 | 0.10 | 0.08 | 0.00 |
| Year Lowest Occurred | 1983 | 1992 | 1997 | 1992 | 1974 | 1990 | 1994 | 1985 | 1992 | 1988 | 1984 | 1991 | 1992 |
| Heating Degree Days (F) | 1049. | 846. | 757. | 534. | 275. | 65. | 3. | 22. | 155. | 458. | 804. | 1020. | 5988. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 8. | 92. | 203. | 150. | 43. | 0. | 0. | 0. | 496. |