| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 57.1 | 64.2 | 69.3 | 76.6 | 85.3 | 93.6 | 98.7 | 97.3 | 91.7 | 81.8 | 67.0 | 57.5 | 78.3 |
| Highest Mean Max. Temperature (F) | 63.8 | 71.4 | 76.5 | 83.5 | 92.1 | 100.7 | 103.0 | 101.4 | 96.4 | 87.4 | 74.6 | 64.5 | 103.0 |
| Year Highest Occurred | 1986 | 1991 | 1997 | 1977 | 1997 | 1981 | 1981 | 1981 | 1979 | 1978 | 1995 | 1976 | 1981 |
| Lowest Mean Max. Temperature (F) | 50.1 | 58.9 | 62.0 | 69.2 | 75.3 | 86.8 | 92.3 | 91.3 | 84.9 | 76.4 | 60.0 | 51.4 | 50.1 |
| Year Lowest Occurred | 1992 | 1971 | 1973 | 1975 | 1998 | 1998 | 1987 | 1976 | 1986 | 1984 | 1972 | 1972 | 1992 |
| Mean Temperature (F) | 47.3 | 52.7 | 56.9 | 61.9 | 69.1 | 76.0 | 80.9 | 79.6 | 74.8 | 66.2 | 54.2 | 46.9 | 63.9 |
| Highest Mean Temperature (F) | 53.1 | 56.8 | 61.3 | 67.8 | 74.7 | 80.6 | 84.4 | 82.8 | 78.4 | 71.2 | 59.7 | 53.2 | 84.4 |
| Year Highest Occurred | 1986 | 1991 | 1978 | 1989 | 1992 | 1981 | 1996 | 1996 | 1984 | 1991 | 1995 | 1977 | 1996 |
| Lowest Mean Temperature (F) | 40.3 | 47.3 | 51.8 | 55.3 | 61.4 | 71.9 | 75.1 | 74.8 | 68.9 | 61.7 | 48.6 | 42.4 | 40.3 |
| Year Lowest Occurred | 1972 | 1971 | 1973 | 1975 | 1998 | 1998 | 1987 | 1976 | 1986 | 1981 | 1994 | 1972 | 1972 |
| Mean Min. Temperature (F) | 37.4 | 41.1 | 44.4 | 47.2 | 52.8 | 58.4 | 63.0 | 61.9 | 57.9 | 50.6 | 41.4 | 36.3 | 49.4 |
| Highest Mean Min. Temperature (F) | 43.5 | 46.0 | 49.8 | 52.5 | 58.7 | 61.7 | 67.7 | 65.6 | 61.5 | 55.3 | 46.4 | 44.0 | 67.7 |
| Year Highest Occurred | 1978 | 1996 | 1978 | 1989 | 1992 | 2000 | 1984 | 1983 | 1983 | 1991 | 1997 | 1977 | 1984 |
| Lowest Mean Min. Temperature (F) | 30.3 | 35.6 | 38.8 | 41.4 | 47.5 | 53.1 | 58.0 | 58.3 | 53.0 | 44.0 | 36.9 | 31.1 | 30.3 |
| Year Lowest Occurred | 1972 | 1971 | 1977 | 1975 | 1998 | 1980 | 1987 | 1976 | 1986 | 1981 | 2000 | 1990 | 1972 |
| Mean Precipitation (in.) | 2.80 | 2.53 | 2.98 | 1.10 | 0.54 | 0.16 | 0.01 | 0.04 | 0.33 | 0.76 | 1.56 | 1.75 | 14.56 |
| Highest Precipitation (in.) | 6.97 | 6.43 | 9.05 | 4.17 | 2.63 | 1.55 | 0.10 | 0.67 | 2.78 | 2.21 | 3.96 | 5.10 | 9.05 |
| Year Highest Occurred | 1997 | 1998 | 1991 | 1998 | 1977 | 1993 | 1984 | 1983 | 1978 | 1982 | 1983 | 1996 | 1991 |
| Lowest Precipitation (in.) | 0.01 | 0.17 | 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 | 1976 | 1988 | 1972 | 1997 | 1997 | 1999 | 2000 | 2000 | 1997 | 1999 | 1995 | 1999 | 1972 |
| Heating Degree Days (F) | 550. | 346. | 267. | 149. | 51. | 2. | 0. | 0. | 4. | 78. | 328. | 561. | 2336. |
| Cooling Degree Days (F) | 0. | 0. | 14. | 55. | 177. | 332. | 491. | 452. | 298. | 115. | 5. | 0. | 1939. |