| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 28.7 | 33.1 | 40.2 | 51.0 | 61.6 | 71.2 | 78.8 | 78.2 | 68.8 | 56.6 | 39.7 | 29.8 | 53.1 |
| Highest Mean Max. Temperature (F) | 36.8 | 41.1 | 51.4 | 60.8 | 70.7 | 79.4 | 83.2 | 83.2 | 75.2 | 65.6 | 54.2 | 39.0 | 83.2 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1992 | 1988 | 1988 | 1971 | 1990 | 1988 | 1999 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 18.0 | 25.9 | 34.2 | 40.7 | 55.8 | 62.8 | 68.1 | 72.7 | 60.0 | 48.1 | 32.0 | 20.1 | 18.0 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1975 | 1998 | 1993 | 1993 | 1986 | 1984 | 1994 | 1983 | 1979 |
| Mean Temperature (F) | 18.5 | 22.3 | 29.7 | 38.8 | 47.7 | 56.0 | 62.6 | 61.5 | 52.7 | 42.2 | 29.1 | 19.3 | 40.0 |
| Highest Mean Temperature (F) | 25.2 | 29.8 | 37.7 | 45.2 | 53.4 | 62.0 | 66.0 | 64.8 | 57.7 | 48.4 | 37.9 | 27.9 | 66.0 |
| Year Highest Occurred | 1998 | 1992 | 1992 | 1992 | 1992 | 1988 | 1975 | 2000 | 1990 | 1988 | 1999 | 1980 | 1975 |
| Lowest Mean Temperature (F) | 7.3 | 13.0 | 21.6 | 30.4 | 43.8 | 50.5 | 54.4 | 57.0 | 47.3 | 35.8 | 21.8 | 9.4 | 7.3 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1975 | 1998 | 1993 | 1993 | 1986 | 1984 | 2000 | 1990 | 1979 |
| Mean Min. Temperature (F) | 8.3 | 11.4 | 19.1 | 26.5 | 33.8 | 40.8 | 46.3 | 44.8 | 36.6 | 27.8 | 18.4 | 8.8 | 26.9 |
| Highest Mean Min. Temperature (F) | 17.8 | 19.8 | 25.2 | 30.3 | 37.5 | 45.1 | 50.3 | 48.8 | 42.9 | 31.5 | 26.1 | 18.2 | 50.3 |
| Year Highest Occurred | 1998 | 2000 | 1986 | 2000 | 1987 | 1977 | 1975 | 1983 | 1998 | 1992 | 1995 | 1975 | 1975 |
| Lowest Mean Min. Temperature (F) | -3.5 | 0.1 | 8.9 | 20.2 | 29.5 | 37.0 | 40.7 | 41.2 | 31.7 | 23.5 | 10.3 | -1.8 | -3.5 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1982 | 1993 | 1993 | 1993 | 1971 | 1984 | 2000 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.30 | 1.04 | 1.25 | 1.33 | 2.14 | 1.30 | 1.28 | 1.04 | 1.15 | 1.23 | 1.22 | 1.45 | 15.73 |
| Highest Precipitation (in.) | 2.60 | 2.55 | 3.05 | 3.42 | 4.17 | 3.28 | 3.13 | 2.42 | 3.08 | 3.42 | 2.75 | 5.12 | 5.12 |
| Year Highest Occurred | 1999 | 1986 | 1976 | 1986 | 1981 | 1976 | 1982 | 1973 | 1973 | 1994 | 1988 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.20 | 0.15 | 0.07 | 0.31 | 0.91 | 0.11 | 0.05 | 0.01 | 0.00 | 0.07 | 0.07 | 0.15 | 0.00 |
| Year Lowest Occurred | 1992 | 1990 | 1994 | 1985 | 1992 | 1996 | 1988 | 1985 | 1993 | 1988 | 1999 | 1989 | 1993 |
| Heating Degree Days (F) | 1443. | 1197. | 1096. | 787. | 537. | 278. | 126. | 137. | 374. | 708. | 1079. | 1417. | 9179. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 8. | 50. | 28. | 4. | 0. | 0. | 0. | 90. |