| Earliest First Occurrence |
| Rank |
Date |
Temperature |
| 1 |
Mar 28, 1971 |
100 |
| 2 |
Apr 9, 1963 |
101 |
| 3 |
Apr 11, 1907 |
100 |
| 4 |
May 4, 1984 |
100 |
| 5 |
May 5, 1906 |
100 |
| 6 |
May 27, 1928 |
100 |
| 7 |
May 28, 2011 |
100 |
| 8 |
May 30, 1985 |
100 |
9
(tie) |
May 31, 1998 |
101 |
| May 31, 1911 |
100 |
|
| Latest Last Occurrence |
| Rank |
Date |
Temperature |
| 1 |
Oct 15, 2024 |
100 |
| 2 |
Oct 12, 2022 |
100 |
| 3 |
Oct 4, 1983 |
100 |
| 4 |
Oct 3, 1979 |
100 |
5
(tie) |
Oct 2, 1989 |
101 |
| Oct 2, 1938 |
100 |
| 7 |
Oct 1, 1977 |
100 |
| 8 |
Sep 29, 2011 |
101 |
9
(tie) |
Sep 28, 2005 |
103 |
| Sep 28, 1953 |
102 |
|
| Latest First Occurrence |
| Rank |
Date |
Temperature |
1
(tie) |
1920 |
none |
| 1919 |
none |
| 3 |
Oct 3, 1979 |
101 |
| 4 |
Sep 5, 2021 |
101 |
| 5 |
Aug 27, 1938 |
100 |
| 6 |
Aug 20, 1973 |
100 |
| 7 |
Aug 17, 1941 |
101 |
| 8 |
Aug 12, 2007 |
101 |
| 9 |
Aug 10, 1968 |
100 |
| 10 |
Aug 8, 1942 |
100 |
|
| Earliest Last Occurrence |
| Rank |
Date |
Temperature |
| 1 |
Jul 8, 1931 |
104 |
2
(tie) |
Jul 22, 1971 |
103 |
| Jul 22, 1906 |
104 |
| 4 |
Jul 29, 1960 |
101 |
5
(tie) |
Aug 4, 1961 |
100 |
| Aug 4, 1914 |
100 |
7
(tie) |
Aug 5, 2004 |
101 |
| Aug 5, 1991 |
100 |
9
(tie) |
Aug 7, 1996 |
100 |
| Aug 7, 1915 |
102 |
|
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