Thunderstorms Across the Southeast U.S.; Elevated to Locally Critical Fire Weather in Colorado

A few strong to marginally severe thunderstorms are possible across the Southeast U.S. Friday. A Marginal Risk (Level 1 of 5) outlook has been issued. Strong winds and hail will be the main threats. Elevated to locally critical fire weather conditions will persist across south-central Colorado today due to dry conditions and gusty winds. Read More >

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Tulsa 100 Degree Day Statistics
Total Number of Days	Top 25 Consecutive Days
Heat Safety Information

Total Number of Days with Temperatures Greater than or Equal to 100°F

for Tulsa, OK January 1905 - September 2023

April

May

1972	1

1934	1

Rank

June

July

August

September

Annual

1991-2020
Normal:

0.5

4.4

5.3

0.6

10.8

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119

1911	18
1925	11
1934	11
1918	9
1933	9
1936	9
1931	7
2012	6
1924	6
2009	5
1953	5
1937	5
1980	4
1963	3
2022	2
2011	2
1914	2
1917	2
1923	2
1922	1
1952	1
1956	1
1966	1
1988	1
1994	1
2013	1
2023	1
1905	0
1906	0
1907	0
1908	0
1909	0
1910	0
1912	0
1913	0
1915	0
1916	0
1919	0
1920	0
1921	0
1926	0
1927	0
1928	0
1929	0
1930	0
1932	0
1935	0
1938	0
1939	0
1940	0
1941	0
1942	0
1943	0
1944	0
1945	0
1946	0
1947	0
1948	0
1949	0
1950	0
1951	0
1954	0
1955	0
1957	0
1958	0
1959	0
1960	0
1961	0
1962	0
1964	0
1965	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1989	0
1990	0
1991	0
1992	0
1993	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0
2008	0
2010	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2021	0

1934	27
1980	26
2011	26
1936	23
1954	23
2022	20
1978	19
2012	18
1925	17
1916	16
1917	15
1966	15
1923	14
2001	13
1912	12
1914	12
1963	12
1981	12
1913	11
1935	11
1956	11
1969	11
1970	10
1919	9
1931	9
1943	9
1964	9
1911	8
1930	8
1939	8
1983	8
1986	8
1998	8
2003	8
1910	7
1918	7
1933	7
1937	7
1952	7
1955	7
1990	7
2006	7
1924	6
1932	6
1957	6
1974	6
1996	6
2009	6
1920	5
1941	5
1946	5
1999	5
2023	5
1926	4
1929	4
1947	4
1953	4
1976	4
1977	4
1988	4
1991	4
2005	4
2013	4
2018	4
2017	3
2016	3
1907	3
1909	3
1922	3
1965	3
1971	3
1972	3
1993	3
2014	3
1921	2
1962	2
1979	2
1984	2
1985	2
1995	2
2010	2
2021	2
1944	1
1949	1
1951	1
1960	1
1968	1
1982	1
1987	1
2000	1
2002	1
2008	1
1905	0
1906	0
1908	0
1915	0
1927	0
1928	0
1938	0
1940	0
1942	0
1945	0
1948	0
1950	0
1958	0
1959	0
1961	0
1967	0
1973	0
1975	0
1989	0
1992	0
1994	0
1997	0
2004	0
2007	0
2015	0
2019	0
2020	0

1936	26
1980	25
1918	24
1913	23
1956	22
1923	21
1934	20
1916	19
1983	19
1907	17
1954	17
1919	16
1943	16
2006	16
2000	15
1924	14
1970	14
1978	14
2011	14
1929	13
1937	13
1982	13
1930	12
1935	12
2010	12
1921	11
1993	11
1912	10
1925	10
1947	10
2001	10
2003	10
2023	10
2012	9
1922	9
1926	9
1946	9
1951	9
1952	9
1998	9
1914	8
1939	8
1944	8
1987	8
1999	8
1910	7
1990	7
1991	7
1962	6
1964	6
1968	6
2007	6
1963	5
1972	5
1984	5
1995	5
2008	5
2022	5
1911	4
1969	4
1977	4
2014	4
2016	4
1909	3
1957	3
1965	3
1975	3
1985	3
2009	3
2015	3
2021	3
1932	2
1955	2
1966	2
2005	2
2013	2
2019	2
1917	1
1940	1
1941	1
1942	1
1958	1
1967	1
1976	1
1979	1
1981	1
1986	1
1988	1
2002	1
1905	0
1906	0
1908	0
1915	0
1920	0
1927	0
1928	0
1931	0
1933	0
1938	0
1945	0
1948	0
1949	0
1950	0
1953	0
1959	0
1960	0
1961	0
1971	0
1973	0
1974	0
1989	0
1992	0
1994	0
1996	0
1997	0
2004	0
2017	0
2018	0
2020	0

1939	10
1912	9
1925	9
1909	8
1922	8
1931	8
1936	7
1947	7
1954	6
2000	6
2012	5
1913	5
1978	5
1998	5
1956	4
1985	4
1990	4
1907	3
1910	3
1965	3
1980	3
2011	2
1921	2
1930	2
1911	1
1919	1
1945	1
1951	1
1952	1
1953	1
1982	1
1983	1
1995	1
2021	1
2023	1
1905	0
1906	0
1908	0
1914	0
1915	0
1916	0
1917	0
1918	0
1920	0
1923	0
1924	0
1926	0
1927	0
1928	0
1929	0
1932	0
1933	0
1934	0
1935	0
1937	0
1938	0
1940	0
1941	0
1942	0
1943	0
1944	0
1946	0
1948	0
1949	0
1950	0
1955	0
1957	0
1958	0
1959	0
1960	0
1961	0
1962	0
1963	0
1964	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1979	0
1981	0
1984	0
1986	0
1987	0
1988	0
1989	0
1991	0
1992	0
1993	0
1994	0
1996	0
1997	0
1999	0
2001	0
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0
2008	0
2009	0
2010	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2022	0

1936	65
1934	59
1980	58
1925	47
1954	46
2011	44
1918	40
1913	39
2012	38
1956	38
1978	38
1923	37
1916	35
1911	31
1912	31
1983	28
2022	27
1919	26
1924	26
1939	26
1937	25
1943	25
1931	24
1970	24
1907	23
1935	23
2001	23
1914	22
1930	22
1998	22
2000	22
1922	21
1947	21
1963	20
1917	18
1952	18
1966	18
1990	18
2003	18
1910	17
1929	17
2023	17
1933	16
1921	15
1964	15
1969	15
1982	15
1909	14
1946	14
1993	14
2009	14
2010	14
1926	13
1981	13
1999	13
2006	13
1951	11
1991	11
1953	10
1944	9
1955	9
1957	9
1965	9
1972	9
1985	9
1986	9
1987	9
1932	8
1962	8
1977	8
1995	8
1968	7
1984	7
2013	7
2014	7
2016	7
1941	6
1974	6
1988	6
1996	6
2005	6
2007	6
2008	6
2021	6
1920	5
1976	5
2018	4
2017	3
2015	3
1971	3
1975	3
1979	3
2002	2
2019	2
1940	1
1942	1
1945	1
1949	1
1958	1
1960	1
1967	1
1994	1
1905	0
1906	0
1908	0
1915	0
1927	0
1928	0
1938	0
1948	0
1950	0
1959	0
1961	0
1973	0
1989	0
1992	0
1997	0
2004	0
2020	0

Red Denotes Top 10 Rankings

There is a significant difference between 30-year averages and 30-year normals based on daily threshold values. In brief, statistics applied to dampened daily normals will tend to underestimate the likelihood of reaching an extreme value. (Normal daily high temperatures might imply that 100-degree days are uncommon since normal daily highs in the summer never actually reach 100 degrees, but this is not the source of the discrepancy.) As a result of the methods used to calculate the normals, 30-year normals of 100-degree days (or freezes) are less than 30-year averages. Note that such averages more closely mirror what has occurred (and perhaps what is likely to occur), and you can use threshold exceedance values as averages instead of normals.

Top 25 Consecutive Days with Temperatures Greater than or Equal to 100°

for Tulsa, OK January 1905 - September 2023

Rank

# of Days

End Date

1
1
3
4
5
6
6
8
8
10
10
12
12
12
12
12
17
17
17
17
21
21
21
21
21

22
22
21
20
19
17
17
16
16
14
14
12
12
12
12
12
11
11
11
11
10
10
10
10
10

8/28/1936
8/22/1918
7/21/1980
8/16/1980
7/26/1934
9/04/2000
7/25/1954
8/18/1956
8/12/1934
8/08/2011
8/17/1913
8/09/1970
7/20/1936
7/05/1931
9/09/1925
7/06/1911
7/24/2011
7/15/1966
8/11/1937
8/07/1919
8/22/1993
8/30/1983
7/18/1969
7/06/1925
8/07/1923

Red Denotes Top 10 Rankings

Updated: October 23, 2023

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Thunderstorms Across the Southeast U.S.; Elevated to Locally Critical Fire Weather in Colorado

Tulsa 100 Degree Day Information