| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 40.5 | 43.6 | 48.9 | 56.2 | 63.7 | 73.0 | 81.4 | 80.4 | 73.8 | 64.6 | 51.3 | 42.1 | 60.0 |
| Highest Mean Max. Temperature (F) | 51.6 | 54.7 | 58.9 | 63.5 | 72.5 | 78.9 | 84.8 | 84.3 | 78.6 | 72.7 | 61.5 | 52.2 | 84.8 |
| Year Highest Occurred | 1976 | 1991 | 1997 | 1992 | 1992 | 1974 | 1996 | 1998 | 1974 | 1988 | 1999 | 1999 | 1996 |
| Lowest Mean Max. Temperature (F) | 30.7 | 34.7 | 40.3 | 46.4 | 55.5 | 67.4 | 77.2 | 75.8 | 64.0 | 57.0 | 40.5 | 32.3 | 30.7 |
| Year Lowest Occurred | 1982 | 1993 | 1973 | 1975 | 1998 | 1995 | 1987 | 1976 | 1986 | 1984 | 1994 | 1984 | 1982 |
| Mean Temperature (F) | 24.3 | 27.5 | 33.8 | 39.7 | 46.8 | 54.7 | 60.9 | 59.7 | 52.6 | 43.7 | 33.7 | 25.8 | 41.9 |
| Highest Mean Temperature (F) | 35.2 | 35.0 | 41.2 | 45.2 | 52.8 | 59.0 | 64.0 | 63.7 | 56.3 | 47.9 | 40.0 | 33.2 | 64.0 |
| Year Highest Occurred | 1986 | 1991 | 1997 | 1994 | 1992 | 1981 | 1994 | 1998 | 1997 | 1993 | 1999 | 1981 | 1994 |
| Lowest Mean Temperature (F) | 13.7 | 20.4 | 25.4 | 32.0 | 40.5 | 49.2 | 56.8 | 54.3 | 47.2 | 38.8 | 26.2 | 17.8 | 13.7 |
| Year Lowest Occurred | 1982 | 1990 | 1973 | 1975 | 1977 | 1995 | 1995 | 1976 | 1986 | 1981 | 1972 | 1978 | 1982 |
| Mean Min. Temperature (F) | 8.1 | 11.4 | 18.7 | 23.1 | 29.8 | 36.4 | 40.3 | 38.9 | 31.3 | 22.7 | 16.1 | 9.4 | 23.9 |
| Highest Mean Min. Temperature (F) | 20.5 | 20.0 | 26.9 | 30.0 | 36.0 | 41.6 | 45.9 | 43.0 | 37.1 | 28.2 | 24.1 | 21.5 | 45.9 |
| Year Highest Occurred | 1986 | 1996 | 1989 | 1994 | 1993 | 1997 | 1984 | 1998 | 1997 | 1993 | 1998 | 1996 | 1984 |
| Lowest Mean Min. Temperature (F) | -3.3 | 3.0 | 10.5 | 17.5 | 23.7 | 30.4 | 34.0 | 32.7 | 23.6 | 17.7 | 9.5 | -0.8 | -3.3 |
| Year Lowest Occurred | 1982 | 1990 | 1973 | 1983 | 1975 | 1976 | 1977 | 1976 | 1973 | 1976 | 1972 | 1976 | 1982 |
| Mean Precipitation (in.) | 1.29 | 1.46 | 1.07 | 0.40 | 0.54 | 0.58 | 0.45 | 0.50 | 0.50 | 0.35 | 0.86 | 1.01 | 9.01 |
| Highest Precipitation (in.) | 4.87 | 6.83 | 2.86 | 2.35 | 2.10 | 3.99 | 2.00 | 2.45 | 2.30 | 1.54 | 3.46 | 5.14 | 6.83 |
| Year Highest Occurred | 1981 | 1986 | 1995 | 1982 | 1989 | 1982 | 1998 | 1983 | 1985 | 1972 | 1983 | 1996 | 1986 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1991 | 1997 | 1997 | 1998 | 1999 | 1999 | 2000 | 1997 | 2000 | 1999 | 2000 | 2000 | 1991 |
| Heating Degree Days (F) | 1262. | 1050. | 966. | 761. | 567. | 311. | 148. | 181. | 374. | 662. | 940. | 1217. | 8439. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 3. | 18. | 15. | 1. | 0. | 0. | 0. | 37. |