Sunshine Extremes
| Month | Sunniest Month | Dullest Month | Sunniest Day |
| January | 93.9
2001 |
6.4
1971 |
8.1
1987,1997 |
| February | 137.0
2008 |
12.5
1940 |
9.4
1995 |
| March | 176.4
2009 |
41.6
1984 |
11.4
2002 |
| April | 243.0
2007 |
66.1
1961 |
13.6
1994 |
| May | 288.5
2020 |
87.3
1932 |
15.6
1985 |
| June | 274.0
1957 |
98.0
1972 |
15.9
1995 |
| July | 284.6
1990 |
90.8
1971 |
15.9
1989 |
| August | 277.7
1995 |
87.2
1902 |
14.4
1988 |
| September | 194.0
1895 |
57.3
1902 |
12.4
1964 |
| October | 154.4
1997 |
38.3
1902 |
10.4
1989 |
| November | 98.6
2005 |
21.8
1945 |
8.3
1968, 1985, 1995 |
| December | 89.1
2014 |
6.3
1902 |
7.1
1995, 1996 |