Monthly and Annual Minimum Temperatures (ºF)
| YEAR | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
| 1945 | 21 | 14 | 10 | 28 | 38 | 46 | 53 | 47 | 35 | 26 | 16 | 13 | 10 | |
| 1946 | 18 | 18 | 25 | 30 | 33 | 44 | 50 | 49 | 35 | 21 | 16 | 6 | 6 | |
| 1947 | 0 | 11 | 23 | 32 | 42 | 45 | 53 | 50 | 40 | 34 | 22 | 16 | 0 | |
| 1948 | 14 | 1 | 13 | 28 | 32 | 51 | 49 | 47 | 34 | 22 | 20 | -2 | -2 | |
| 1949 | -11 | 3 | 27 | 30 | 31 | 42 | 49 | 47 | 38 | 23 | 28 | 10 | -11 | |
| YEAR | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
| 1950 | -21 | -23 | 20 | 27 | 38 | 44 | 49 | 51 | 38 | 34 | 21 | 22 | -23 | |
| 1951 | 6 | 18 | 22 | 26 | 37 | 41 | 51 | 47 | 39 | 27 | 23 | 4 | 4 | |
| 1952 | 5 | 16 | 24 | 27 | 37 | 42 | 49 | 46 | 42 | 34 | 7 | 17 | 5 | |
| 1953 | 24 | 20 | 23 | 27 | 36 | 40 | 52 | 51 | 37 | 30 | 24 | 20 | 20 | |
| 1954 | -6 | 17 | 18 | 26 | 28 | 41 | 45 | 48 | 36 | 26 | 23 | 14 | -6 | |
| 1955 | 18 | 15 | 6 | 26 | 31 | 42 | 43 | 48 | 37 | 32 | -1 | 9 | -1 | |
| 1956 | -7 | -10 | 15 | 28 | 38 | 40 | 54 | 49 | 39 | 31 | 15 | 2 | -10 | |
| 1957 | -22 | -1 | 28 | 34 | 48 | 48 | 51 | 52 | 36 | 32 | 20 | 23 | -22 | |
| 1958 | 16 | 29 | 23 | 34 | 38 | 47 | 49 | 53 | 34 | 30 | 9 | 21 | 9 | |
| 1959 | -1 | 19 | 25 | 30 | 30 | 41 | 49 | 49 | 41 | 26 | 6 | 14 | -1 | |
| YEAR | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
| 1960 | -1 | 10 | 13 | 30 | 33 | 46 | 52 | 41 | 40 | 30 | 22 | 14 | -1 | |
| 1961 | 16 | 27 | 25 | 31 | 38 | 44 | 50 | 56 | 36 | 26 | 10 | 3 | 3 | |
| 1962 | -2 | 7 | 15 | 33 | 31 | 37 | 42 | 49 | 40 | 34 | 16 | 16 | -2 | |
| 1963 | -4 | 8 | 22 | 28 | 36 | 45 | 49 | 49 | 45 | 23 | 17 | 7 | -4 | |
| 1964 | 15 | 19 | 15 | 30 | 35 | 45 | 50 | 44 | 39 | 30 | 20 | -13 | -13 | |
| 1965 | 10 | 18 | 14 | 32 | 32 | 48 | 50 | 42 | 33 | 30 | 26 | 10 | 10 | |
| 1966 | 17 | 19 | 19 | 26 | 37 | 38 | 48 | 50 | 43 | 29 | 22 | 22 | 17 | |
| 1967 | 23 | 20 | 20 | 27 | 34 | 47 | 52 | 56 | 43 | 30 | 17 | 6 | 6 | |
| 1968 | 10 | 15 | 25 | 23 | 33 | 42 | 51 | 47 | 39 | 30 | 23 | -14 | -14 | |
| 1969 | -8 | -1 | 22 | 31 | 38 | 52 | 53 | 45 | 41 | 24 | 19 | 19 | -8 | |
| YEAR | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
| 1970 | 8 | 21 | 24 | 26 | 30 | 46 | 50 | 52 | 34 | 23 | 11 | 8 | 8 | |
| 1971 | 8 | 15 | 15 | 27 | 36 | 44 | 44 | 51 | 38 | 13 | 21 | 5 | 5 | |
| 1972 | -4 | -1 | 24 | 26 | 36 | 45 | 50 | 49 | 30 | 20 | 24 | -8 | -8 | |
| 1973 | -1 | 21 | 26 | 27 | 34 | 45 | 46 | 46 | 43 | 31 | 16 | 14 | -1 | |
| 1974 | -13 | 23 | 21 | 33 | 32 | 41 | 48 | 48 | 40 | 29 | 23 | 17 | -13 | |
| 1975 | 14 | 10 | 19 | 21 | 33 | 38 | 53 | 46 | 44 | 26 | 15 | 14 | 10 | |
| 1976 | 16 | 10 | 11 | 25 | 35 | 37 | 47 | 44 | 42 | 28 | 13 | 12 | 10 | |
| 1977 | 4 | 21 | 24 | 31 | 34 | 39 | 49 | 48 | 36 | 28 | 9 | -3 | -3 | |
| 1978 | -9 | 17 | 25 | 30 | 37 | 44 | 50 | 47 | 41 | 21 | 7 | -10 | -10 | |
| 1979 | -11 | -12 | 20 | 29 | 38 | 45 | 39 | 53 | 42 | 32 | 13 | 19 | -12 | |
| YEAR | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
| 1980 | -3 | 19 | 25 | 28 | 38 | 40 | 47 | 42 | 41 | 30 | 18 | 9 | -3 | |
| 1981 | 23 | 8 | 24 | 24 | 35 | 40 | 45 | 48 | 34 | 27 | 19 | 10 | 8 | |
| 1982 | -8 | 9 | 24 | 24 | 33 | 47 | 45 | 51 | 41 | 26 | 18 | 13 | -8 | |
| 1983 | 12 | 15 | 29 | 27 | 37 | 40 | 49 | 50 | 35 | 29 | 22 | -13 | -13 | |
| 1984 | 10 | 24 | 25 | 30 | 33 | 37 | 51 | 47 | 36 | 12 | 25 | -4 | -4 | |
| 1985 | 5 | -5 | 21 | 26 | 33 | 44 | 56 | 46 | 33 | 26 | -13 | -8 | -13 | |
| 1986 | 12 | 15 | 29 | 28 | 37 | 43 | 48 | 54 | 38 | 33 | 16 | 18 | 12 | |
| 1987 | 9 | 18 | 24 | 30 | 38 | 43 | 49 | 51 | 41 | 31 | 17 | 9 | 9 | |
| 1988 | 14 | 9 | 24 | 31 | 35 | 42 | 47 | 52 | 38 | 32 | 28 | 8 | 8 | |
| 1989 | 15 | -5 | 14 | 35 | 39 | 46 | 49 | 52 | 44 | 27 | 21 | 19 | -5 | |
| YEAR | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
| 1990 | 22 | 9 | 24 | 37 | 39 | 47 | 46 | 52 | 48 | 31 | 26 | -12 | -12 | |
| 1991 | 5 | 26 | 22 | 31 | 38 | 44 | 55 | 47 | 42 | 23 | 23 | 20 | 5 | |
| 1992 | 19 | 22 | 32 | 27 | 37 | 49 | 54 | 43 | 40 | 30 | 17 | 12 | 12 | |
| 1993 | -4 | 3 | 17 | 32 | 35 | 46 | 50 | 43 | 37 | 29 | -1 | 21 | -4 | |
| 1994 | 20 | 5 | 19 | 35 | 36 | 44 | 50 | 53 | 47 | 30 | 19 | 8 | 5 | |
| 1995 | 8 | 8 | 21 | 28 | 39 | 47 | 52 | 45 | 42 | 16 | 17 | 16 | 8 | |
| 1996 | -18 | -18 | 18 | 30 | 29 | 45 | 49 | 48 | 34 | 24 | 17 | -6 | -18 | |
| 1997 | 8 | 20 | 28 | 25 | 30 | 46 | 49 | 52 | 44 | 29 | 23 | 19 | 8 | |
| 1998 | 7 | 22 | 23 | 29 | 39 | 47 | 58 | 50 | 43 | 25 | 27 | -1 | -1 | |
| 1999 | 18 | 20 | 25 | 25 | 30 | 38 | 45 | 43 | 36 | 27 | 26 | 20 | 18 | |
| YEAR | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
| 2000 | 18 | 21 | 24 | 29 | 33 | 43 | 44 | 49 | 32 | 30 | 18 | 13 | 13 | |
| 2001 | 20 | 17 | 23 | 28 | 34 | 44 | 53 | 50 | 38 | 31 | 26 | 16 | 16 | |
| 2002 | 13 | 16 | 18 | 29 | 32 | 46 | 50 | 50 | 38 | 7 | 11 | 23 | 7 | |
| 2003 | 22 | 15 | 27 | 24 | 34 | 45 | 52 | 53 | 41 | 19 | 13 | 8 | 8 | |
| 2004 | -14 | 19 | 27 | 32 | 38 | 45 | 49 | 54 | 41 | 27 | 17 | 17 | -14 | |
| 2005 | 7 | 16 | 28 | 28 | 40 | 46 | 52 | 52 | 40 | 31 | 23 | 4 | 4 | |
| 2006 | 22 | 5 | 19 | 31 | 34 | 49 | 48 | 45 | 38 | 21 | 11 | 8 | 5 | |