April | May | June | July | August | September | October |
0.4 | 5.1 | 20.2 | 26.2 | 23.2 | 13.0 | 1.3 |
May | June | July | August | September |
0.1 | 3.3 | 4.4 | 1.7 | 0.4 |
PROBABILITY (Percent) | FIRST OCCURRENCE IN SPRING | LAST OCCURRENCE IN FALL | ||||||
100 OR Higher | 105 OR Higher | 110 OR Higher | 100 OR Higher | 105 OR Higher | 110 OR Higher | |||
90 | JUN 6 | JUN 21 | JUL 8 | SEP 12 | AUG 20 | JUL 11 | ||
80 | MAY 28 | JUN 17 | JUL 1 | SEP 18 | AUG 23 | JUL 18 | ||
70 | MAY 24 | JUN 13 | JUN 29 | SEP 21 | SEP 1 | JUL 26 | ||
60 | MAY 19 | JUN 10 | JUN 27 | SEP 24 | SEP 6 | AUG 1 | ||
50 | MAY 14 | JUN 7 | JUN 19 | SEP 27 | SEP 10 | AUG 7 | ||
40 | MAY 13 | JUN 3 | JUN 20 | SEP 28 | SEP 14 | AUG 10 | ||
30 | MAY 10 | MAY 30 | JUN 15 | SEP 30 | SEP 16 | AUG 19 | ||
20 | MAY 6 | MAY 25 | JUN 11 | OCT 5 | SEP 19 | AUG 26 | ||
10 | APR 20 | MAY 16 | JUN 4 | OCT 9 | SEP 23 | SEP 3 |
# of days | Date | T of 1st Day | T of 2nd Day |
2 days | June 25-26, 1990 | 120 | 122 |
1 day | July 28, 1995 | 121 |
# of days | Month | days | year | T of 1st day | T of 2nd day | T of 3rd day | T of 4th day |
4 days | June | 19-22 | 1968 | 115 | 115 | 115 | 115 |
4 days | June | 25-28 | 1979 | 115 | 116 | 116 | 117 |
4 days | June | 25-28 | 1990 | 120 | 122 | 118 | 118 |
4 days | July | 26-29 | 1995 | 116 | 118 | 121 | 115 |
3 days | July | 5-7 | 1905 | 115 | 116 | 115 | |
3 days | July | 9-11 | 1958 | 116 | 115 | 118 | |
3 days | June | 14-16 | 1974 | 115 | 115 | 115 | |
3 days | June | 24-26 | 1994 | 116 | 116 | 116 |
# of days | Start | End | Year |
18 days | June 12 | June29 | 1974 |
17 days | July 25 | August 10 | 1995 |
10 days | June 29 | July 8 | 1989 |
9 days | June 27 | July 5 | 1907 |
9 days | July 3 | July 11 | 1940 |
9 days | June 17 | June 25 | 1978 |
9 days | June 18 | June 26 | 1981 |
9 days | June 20 | June 28 | 1990 |
8 days | June 11 | June 18 | 1896 |
8 days | July 5 | July 12 | 1901 |
8 days | July 7 | July 14 | 1958 |
8 days | July 13 | July 20 | 1978 |
# of days | Start | End | Year |
28 days | June 10 | July 7 | 1936 |
27 days | June 10 | July 6 | 1974 |
25 days | June 23 | July 17 | 1958 |
23 days | June 23 | July 15 | 1987 |
22 days | June 20 | July 11 | 1973 |
# of days | Start | End | Year |
76 days | June | 10-August 24 | 1993 |
64 days | June | 7-August 9 | 1989 |
61 days | June | 2-August 1 | 1935 |
49 days | June | 30-August 17 | 1966 |
47 days | June | 11-July 27 | 1951 |
47 days | June | 13-July 29 | 1988 |
# of days | Start | End | Year |
98 days | June | September 22 | 1973 |
76 days | June 10 | August 24 | 1993 |
74 days | June 29 | September 10 | 1978 |
70 days | June 1 | August 9 | 1989 |
68 days | June 11 | August 17 | 1966 |
68 days | June 7 | August 13 | 1980 |
# of days | Start | End |
120 days | November 16 1963 | March 14 1964 |
107 days | November 27 1914 | March 13 1915 |
105 days | November 11 1931 | February 23 1932 |
# of days | Start | End | Year |
18 days | January 10 | January 27 | 1898 |
18 days | January 17 | February 3 | 1933 |
17 days | January 23 | February 8 | 1949 |
# of days | Sequence | Year |
9 days | January 17-25 | 1937 |
9 days | January 23-31 | 1949 |
8 days | January 20-27 | 1898 |
8 days | February 2-9 | 1903 |
# of days | Sequence | Year |
5 days | January 20-24 | 1937 |
5 days | December 13-17 | 1967 |
5 days | January 3-7 | 1971 |
4 days | January 11-14 | 1898 |
4 days | February 5-8 | 1903 |
4 days | January 4-7 | 1910 |
4 days | January 24-27 | 1949 |
4 days | January 31-February 3 | 1985 |
# of days | Start | End | Year |
3 days | January 5 | January 7 | 1913 |
3 days | January 21 | January 23 | 1937 |
2 days | January 3 | January 4 | 1949 |
# of days | Sequence | Year | T of 1st day | T of 2nd day | T of 3rd day |
3 days | January 5-7 | 1913 | 42 | 39 | 41 |
# of days | Year |
196 days | 1989 |
192 days | 1934 |
190 days | 1988 |
188 days | 1990 |
187 days | 1987 |
186 days | 1972 |
185 days | 1992 |
180 days | 1974 |
179 days | 1954 |
178 days | 1950 |
# of days | Year | # of days | Year | |
143 days | 1989 | 112 days | 1991 | |
122 days | 1988 | 111 days | 1975 | |
120 days | 1992 | 110 days | 1958 | |
116 days | 1973 | 109 days | 1979 | |
116 days | 1978 | 109 days | 1984 | |
116 days | 1987 |
# of days | Year | # of days | Year | |
81 days | 1989 | 70 days | 1983 | |
75 days | 1978 | 68 days | 1977 | |
74 days | 1988 | 68 days | 1987 | |
73 days | 1979 | 67 days | 1933 | |
70 days | 1981 | 67 days | 1974 |
# of days | Year | # of days | Year | |
28 days | 1979 | 25 days | 1981 | |
27 days | 1936 | 25 days | 1995 | |
27 days | 1974 | 24 days | 1990 | |
27 days | 1985 | 21 days | 1983 | |
27 days | 1989 | 20 days | 1988 | |
25 days | 1978 | 19 days | 1940 | |
19 days | 1973 |
# of days | Year | # of days | Year | |
7 days | 1974 | 5 days | 1994 | |
6 days | 1989 | 4 days | 1968 | |
5 days | 1979 | 4 days | 1995 | |
5 days | 1985 | 3 days | 1905 | |
5 days | 1990 | 3 days | 1934 | |
3 days | 1958 |
# of days | Year |
2 days | 1990 |
1 day | 1995 |
# of days | Year | # of days | Year | |
127 days | 1912 | 137 days | 1941 | |
131 days | 1907 | 137 days | 1957 | |
131 days | 1908 | 138 days | 1896 | |
131 days | 1913 | 139 days | 1899 | |
136 days | 1911 | 141 days | 1903 |
# of days | Year | # of days | Year | |
48 days | 1913 | 60 days | 1955 | |
53 days | 1912 | 62 days | 1908 | |
55 days | 1909 | 64 days | 1915 | |
59 days | 1911 | 65 days | 1907 |
# of days | Year | # of days | Year | |
10 days | 1913 | 17 days | 1956 | |
12 days | 1911 | 19 days | 1912 | |
13 days | 1914 | 19 days | 1915 | |
15 days | 1909 | 20 days | 1923 | |
16 days | 1955 | 21 days | 1908 |
# of days | Year | # of days | Year | |
0 days | 1911 | 2 days | 1904 | |
1 day | 1897 | 2 days | 1906 | |
1 day | 1908 | 2 days | 1912 | |
1 day | 1909 | 2 days | 1914 | |
1 day | 1941 | 2 days | 1916 | |
1 day | 1956 |
# of days | Start | End | Year |
20 days | December 7 | December 26 | 1916 |
17 days | January 11 | January 27 | 1963 |
17 days | December 25 | January 10 | 1967 |
15 days | January 14 | January 28 | 1937 |
14 days | January 19 | February 1 | 1904 |
14 days | December 22 | January 4 | 1912 |
14 days | December 23 | January 5 | 1954 |
13 days | January 6 | January 18 | 1964 |
13 days | February 8 | February 20 | 1966 |
13 days | January 3 | February 15 | 1971 |
# of days | Start | End | Year |
14 days | December 22 | January 4 | 1912 |
14 days | December 8 | December 21 | 1916 |
13 days | January 14 | January 26 | 1898 |
12 days | December 27 | January 7 | 1967 |
11 days | January 21 | January 31 | 1904 |
11 days | January 18 | January 28 | 1937 |
10 days | January 9 | January 18 | 1964 |
# of days | Start | End | Year |
12 days | December 8 | December 19 | 1916 |
12 days | December 27 | January 7 | 1967 |
11 days | December 24 | January 3 | 1896 |
8 days | January 21 | January 28 | 1937 |
7 days | January 12 | January 18 | 1963 |
7 days | January 4 | January 10 | 1971 |
# of days | Start | End | Year |
6 days | January 4 | January 9 | 1971 |
5 days | December 30 | January 3 | 1912 |
5 days | January 22 | January 26 | 1937 |
5 days | January 12 | January 16 | 1963 |
# of days | Start | End | Year |
4 days | January 5 | January 8 | 1971 |
4 days | January 9 | January 12 | 1964 |
3 days | January 6 | January 8 | 1913 |
3 days | January 22 | January 24 | 1937 |
3 days | January 4 | January 6 | 1950 |
3 days | January 13 | January 15 | 1963 |
# of days | Date | T of 1st day | T of 2nd day | T of 3rd day |
3 days | January 6-8, 1913 | 17 | 16 | 19 |
2 days | January 7-8, 1971 | 19 | 20 |
# of days | Years | # of days | Years | |
39 days | 1963-1964 | 21 days | 1965-1966 | |
30 days | 1897-1898 | 18 days | 1912-1913 | |
29 days | 1916-1917 | 16 days | 1936-1937 | |
24 days | 1911-1912 | 16 days | 1971-1972 | |
24 days | 1966-1967 | 14 days | 1968-1969 | |
21 days | 1903-1904 | 12 days | 1970-1971 |
# of days | Years | # of days | Years | |
15 days | 1963-1964 | 8 days | 1966-1967 | |
10 days | 1897-1898 | 7 days | 1962-1963 | |
9 days | 1911-1912 | 6 days | 1903-1904 | |
9 days | 1936-1937 | 6 days | 1970-1971 | |
8 days | 1916-1917 | 5 days | 1912-1913 |
# of days | Years | # of days | Years | |
5 days | 1963-1964 | 3 days | 1912-1913 | |
4 days | 1897-1898 | 3 days | 1936-1937 | |
4 days | 1911-1912 | 3 days | 1962-1963 | |
4 days | 1970-1971 | 2 days | 1916-1917 |
# of days | Years | # of days | Years | |
3 days | 1912-1913 | 1 day | 1962-1963 | |
2 days | 1970-1971 | 1 day | 1963-1964 |
# of days | Years | # of days | Years | |
0 days | 1977-1978 | 0 days | 1993-1994 | |
0 days | 1980-1981 | 0 days | 1994-1995 | |
0 days | 1981-1982 | 1 day | 1937-1938 | |
0 days | 1982-1983 | 1 day | 1940-1941 | |
0 days | 1983-1984 | 1 day | 1942-1943 | |
0 days | 1985-1986 | 1 day | 1952-1953 | |
0 days | 1991-1992 | |||
0 days | 1992-1993 |
# of days | Start | End | Year |
14 days | August 18 | August 31 | 1981 |
14 days | July 28 | August 10 | 1995 |
11 days | July 18 | July 28 | 1981 |
10 days | August 28 | September 6 | 1983 |
10 days | July 5 | July 14 | 1985 |
8 days | July 3 | July 10 | 1981 |
8 days | July 31 | August 7 | 1986 |
8 days | June 22 | June 29 | 1988 |
8 days | June 24 | July 1 | 1990 |
7 days | July 2 | July 8 | 1973 |
7 days | July 28 | August 3 | 1977 |
7 days | July 27 | August 2 | 1980 |
7 days | August 24 | August 30 | 1985 |
7 days | July 4 | July 10 | 1988 |
7 days | July 14 | July 20 | 1989 |
7 days | June 27 | July 3 | 1994 |
# of days | Start | End | Year |
40 days | July 7 | August 15 | 1977 |
35 days | June 15 | July 18 | 1988 |
34 days | July 30 | September 1 | 1994 |
28 days | July 16 | August 12 | 1980 |
27 days | July 28 | August 23 | 1986 |
26 days | August 24 | September 18 | 1983 |
25 days | July 20 | August 13 | 1985 |
22 days | July 18 | August 8 | 1983 |
21 days | July 31 | August 20 | 1988 |
20 days | August 16 | September 4 | 1981 |
19 days | July 23 | August 10 | 1982 |
18 days | July 2 | July19 | 1991 |
17 days | June 26 | July 12 | 1984 |
17 days | July 29 | August 14 | 1989 |
# of days | Year | # of days | Year | |
51 days | 1981 | 26 days | 1986 | |
35 days | 1983 | 23 days | 1980 | |
33 days | 1977 | 23 days | 1985 | |
33 days | 1989 | 19 days | 1970 | |
32 days | 1994 | 18 days | 1969 | |
27 days | 1982 | 17 days | 1984 | |
27 days | 1991 | 17 days | 1992 | |
27 days | 1995 | 15 days | 1987 |
# of days | Year | # of days | Year | |
87 days | 1981 | 60 days | 1958 | |
76 days | 1977 | 60 days | 1970 | |
76 days | 1985 | 59 days | 1995 | |
71 days | 1983 | 57 days | 1982 | |
71 days | 1989 | 57 days | 1993 | |
70 days | 1994 | 54 days | 1969 | |
67 days | 1986 | 54 days | 1984 | |
66 days | 1991 | 52 days | 1933 | |
61 days | 1992 | 49 days | 1980 |
#of days | Date | Day 1 | Day 2 | Day 3 | Day 4 | Day 5 | Day 6 | Day7 | Day 8 |
8 days | August 3-10 1995: | 100 | 101 | 100 | 101 | 100 | 101 | 101 | 102 |
5 days | July 4-8 1989: | 101 | 101 | 101 | 102 | 101 | |||
5 days | June 24-28 1990: | 100 | 104 | 107 | 106 | 103 | |||
4 days | July 29-August 1 1972: | 102 | 100 | 101 | 103 | ||||
4 days | July 2-5 1973: | 101 | 100 | 102 | 100 | ||||
4 days | July 27-30 1995: | 101 | 103 | 102 | 101 |
# of days | Year | # of days | Year | |
14 days | 1995 | 5 days | 1973 | |
12 days | 1989 | 5 days | 1980 | |
10 days | 1990 | 5 days | 1985 | |
7 days | 1985 | 5 days | 1986 | |
7 days | 1994 | 4 days | 1970 | |
5 days | 1969 | 4 days | 1972 |
Mean Temp | Date | Maximum Temp | Minimum Temp |
107 | June 26, 1990: | 122 | 91 |
106 | June 27, 1990: | 118 | 93 |
104 | June 25, 1990: | 120 | 88 |
Temperature | Date | Maximum Temp | Minimum Temp |
28 | January 6 1913: | 39 | 17 |
28 | January 7 1913: | 41 | 16 |
33 | January 22 1937: | 45 | 21 |
33 | January 13 1963: | 45 | 20 |
33 | January 7 1971: | 46 | 19 |
Temp Range | Date | Maximum Temp | Minimum Temp |
48 | June 13, 1917: | 107 | 59 |
48 | April 17, 1919: | 96 | 48 |
Temp Range | Date | Maximum Temp | Minimum Temp |
3 | December 10 1898: | 36 | 33 |
3 | November 26 1905: | 60 | 57 |
3 | October 24 1919: | 62 | 59 |
3 | February 3 1983: | 52 | 49 |
3 | November 25 1985: | 61 | 58 |
NORMAL | HIGHEST | YEAR | LOWEST | YEAR | |
1961-1990 | 1899-1995 | 1899-1995 | |||
July | 0 | 0 | all | 0 | all |
August | 0 | 0 | all | 0 | all |
September | 0 | 4 | 1965 | 0 | most |
October | 17 | 88 | 1908 | 0 | several |
November | 134 | 293 | 1922 | 36 | 1989 |
December | 345 | 573 | 1911 | 122 | 1980 |
January | 362 | 681 | 1937 | 110 | 1986 |
February | 227 | 458 | 1939 | 27 | 1991 |
March | 182 | 288 | 1952 | 6 | 1934 |
April | 75 | 133 | 1965 | 0 | several |
May | 8 | 55 | 1915 | 0 | many |
June | 0 | 0 | all | 0 | all |
Season | 1350 | 2062 | 1916-1917 | 636 | 1980-1981 |
NORMAL | HIGHEST | YEAR | LOWEST | YEAR | |
1961-1990 | 1969-1995 | 1969-1995 | |||
January | 8 | 10 | 1988 | 0 | most |
February | 22 | 61 | 1991 | 0 | several |
March | 95 | 210 | 1989 | 0 | 1973 |
April | 222 | 459 | 1989 | 42 | 1975 |
May | 436 | 688 | 1984 | 265 | 1971 |
June | 696 | 873 | 1990 | 582 | 1969 |
July | 884 | 1013 | 1989 | 833 | 1976 |
August | 822 | 961 | 1981 | 763 | 1979 |
September | 618 | 787 | 1983 | 525 | 1985 |
October | 311 | 543 | 1988 | 151 | 1970 |
November | 41 | 124 | 1988 | 4 | 1972 |
December | 7 | 13 | 1980 | 0 | most |
Annual | 4162 | 5245 | 1989 | 3651 | 1971 |
AVERAGE | HIGHEST | YEAR | LOWEST | YEAR | |
1961-1990 | 1951-1990 | 1951-1992 | |||
January | 0 | 0 | all | 0 | all |
February | 0 | 0 | all | 0 | all |
March | 0 | 7 | 1986 | 0 | most |
April | 9 | 84 | 1989 | 0 | most |
May | 71 | 238 | 1984 | 3 | 1957 |
June | 264 | 423 | 1990 | 41 | 1965 |
July | 423 | 548 | 1989 | 222 | 1955 |
August | 364 | 496 | 1981 | 183 | 1956 |
September | 189 | 348 | 1983 | 65 | 1961 1964 |
October | 24 | 150 | 1991 | 0 | several |
November | 0 | 2 | 1988 | 0 | most |
December | 0 | 0 | all | 0 | all |
Annual | 1344 | 1934 | 1989 | 737 | 1964 |