| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 34.7 | 41.5 | 50.9 | 60.3 | 69.6 | 79.4 | 89.2 | 89.0 | 77.6 | 63.8 | 45.3 | 35.4 | 61.4 |
| Highest Mean Max. Temperature (F) | 42.1 | 50.2 | 60.8 | 70.3 | 78.5 | 86.6 | 94.8 | 94.7 | 85.4 | 75.1 | 54.3 | 40.2 | 94.8 |
| Year Highest Occurred | 1998 | 1995 | 1992 | 1987 | 1992 | 1986 | 1985 | 1971 | 1990 | 1988 | 1999 | 1973 | 1985 |
| Lowest Mean Max. Temperature (F) | 25.8 | 29.6 | 42.7 | 50.1 | 62.3 | 72.9 | 78.4 | 82.7 | 68.1 | 58.6 | 37.5 | 24.3 | 24.3 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1977 | 1998 | 1993 | 1976 | 1985 | 1984 | 1985 | 1985 | 1985 |
| Mean Temperature (F) | 28.0 | 33.2 | 41.1 | 48.5 | 56.6 | 65.0 | 73.0 | 72.6 | 62.3 | 50.8 | 37.6 | 28.9 | 49.8 |
| Highest Mean Temperature (F) | 34.9 | 39.7 | 47.1 | 54.6 | 61.9 | 71.0 | 77.8 | 78.0 | 68.7 | 58.6 | 44.0 | 34.5 | 78.0 |
| Year Highest Occurred | 1998 | 1995 | 1992 | 1987 | 1987 | 1986 | 1985 | 1971 | 1990 | 1988 | 1999 | 1973 | 1971 |
| Lowest Mean Temperature (F) | 17.5 | 21.9 | 33.0 | 41.7 | 51.0 | 59.8 | 63.6 | 67.7 | 56.0 | 46.5 | 29.4 | 18.3 | 17.5 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1977 | 1993 | 1993 | 1993 | 1985 | 1985 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 21.3 | 24.9 | 31.2 | 36.7 | 43.5 | 50.5 | 56.8 | 56.2 | 46.9 | 37.8 | 29.8 | 22.4 | 38.2 |
| Highest Mean Min. Temperature (F) | 29.0 | 32.2 | 36.9 | 41.6 | 48.1 | 55.4 | 61.2 | 61.3 | 52.1 | 43.9 | 34.9 | 28.9 | 61.3 |
| Year Highest Occurred | 1981 | 1980 | 1983 | 1990 | 1987 | 1986 | 1975 | 1971 | 1990 | 1979 | 1983 | 1973 | 1971 |
| Lowest Mean Min. Temperature (F) | 9.2 | 14.2 | 23.4 | 32.8 | 39.6 | 46.2 | 48.8 | 51.8 | 42.6 | 34.4 | 21.3 | 11.6 | 9.2 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1999 | 1977 | 1993 | 1993 | 1995 | 1988 | 1985 | 1985 | 1990 | 1979 |
| Mean Precipitation (in.) | 2.87 | 2.43 | 2.01 | 1.52 | 1.41 | 0.95 | 0.40 | 0.33 | 0.85 | 1.07 | 2.70 | 2.96 | 19.50 |
| Highest Precipitation (in.) | 6.55 | 8.48 | 4.84 | 3.33 | 5.06 | 2.19 | 1.53 | 1.99 | 3.70 | 3.08 | 6.50 | 9.90 | 9.90 |
| Year Highest Occurred | 1998 | 1986 | 1983 | 1990 | 1998 | 1995 | 1978 | 1976 | 1986 | 1975 | 1988 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.17 | 0.50 | 0.14 | 0.15 | 0.00 | 0.19 | 0.00 | 0.00 | 0.00 | 0.00 | 0.06 | 0.12 | 0.00 |
| Year Lowest Occurred | 1985 | 1991 | 1994 | 1987 | 1992 | 1996 | 1999 | 1998 | 1999 | 1988 | 1976 | 1976 | 1992 |
| Heating Degree Days (F) | 1147. | 891. | 742. | 495. | 278. | 102. | 17. | 19. | 153. | 442. | 824. | 1118. | 6228. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 16. | 100. | 266. | 254. | 70. | 2. | 0. | 0. | 708. |