Extreme Fire Weather Concerns for the Western U.S.; Severe Weather and Flooding Threats for the Central U.S.

Extremely critical fire weather conditions are expected to develop across the Great Basin and Southwest today, and exceptionally dry and windy conditions will promote rapid wildfire spread through the weekend. Scattered severe thunderstorms and heavy rain are possible across parts of the Ozark Plateau into lower Ohio Valley and parts of the northern Rockies into adjacent Great Plains. Read More >

Denver's 100 Degree Days and Streaks
Denver's Top 20 Seasonal 90 Degree Days
Denver's Consecutive 90 Degree Day Streaks
Denver's Warmest Summers (June-August)
Denver's Coolest Summers (June-August)

List of 100 Degree Days and Streaks at Denver (1872-Present)

(100 Degree occurrences since 1872 = 112)

105 Degrees Highest Temperature recorded in Denver
(June 28, 2018, June 26, 2012, June 25, 2012, July 20, 2005 and August 8th, 1878)

Greatest Number of 100 Degree Days by Year

Rank	Year	Number
1	2012	13
2	2005	7
3	2024	6
4	2022	5
-	2021	5
-	1990	5
-	1989	5
8	2006	4
-	1878	4
10	2008	3
-	2007	3
-	2003	3
-	1954	3
14	2020	2
-	2019	2
-	2018	2
-	2017	2
-	2013	2
-	1973	2
-	1971	2
-	1962	2
-	1910	2
-	1902	2
-	1876	2
-	1874	2

Overall, it has been fairly rare to have 2 consecutive days of 100 degrees or more. In fact, there have only been 15 occurrences since 1872.

Consecutive 100 Degree Days since 1872

Rank	Number	Start Date	End Date
1	5	6/22/2012	6/26/2012
-	5	7/19/2005	7/23/2005
-	5	7/4/1989	7/8/1989
4	4	6/29/1990	7/2/1990
5	3	6/15/2021	6/17/2021
-	3	7/19/2012	7/21/2012
7	2	7/9/2022	7/10/2022
-	2	6/27/2018	6/28/2018
-	2	7/1/2012	7/2/2012
-	2	8/1/2008	8/2/2008
-	2	7/15/2006	7/16/2006
-	2	7/5/1973	7/6/1973
-	2	7/11/1954	7/12/1954
-	2	8/2/1878	8/3/1878
-	2	7/3/1874	7/4/1874

List of 100 Degree Occurrences since 1872

(Earliest occurrence on 6/11/2022 and 6/11/2013, latest occurrence was 9/5/2020)

Date		Date		Date
7/9/2025	100
8/4/2024	102	6/23/2012	104	7/7/1989	102
8/2/2024	101	6/22/2012	102	7/6/1989	102
7/30/2024	100	6/18/2012	100	7/5/1989	101
7/14/2024	101	7/17/2010	102	7/4/1989	101
7/12/2024	102	8/2/2008	103	7/21/1981	100
6/25/2024	100	8/1/2008	104	8/6/1980	100
8/5/2022	101	7/20/2008	100	7/6/1973	103
7/18/2022	100	7/17/2007	100	7/5/1973	100
7/10/2022	101	7/2/2007	100	7/30/1972	100
7/9/2022	100	6/24/2007	100	7/17/1971	101
6/11/2022	100	7/19/2006	100	7/12/1971	101
7/28/2021	100	7/16/2006	103	8/8/1969	100
7/8/2021	102	7/15/2006	101	8/14/1962	100
6/17/2021	100	6/14/2006	102	8/10/1962	100
6/16/2021	100	7/30/2005	101	7/12/1954	101
6/15/2021	101	7/23/2005	102	7/11/1954	102
9/5/2020	101	7/22/2005	102	6/23/1954	102
8/18/2020	100	7/21/2005	104	7/20/1939	102
9/2/2019	100	7/20/2005	105	8/1/1938	100
7/19/2019	101	7/19/2005	101	7/23/1936	100
6/28/2018	105	7/16/2005	102	7/19/1934	100
6/27/2018	101	7/24/2003	100	7/22/1931	100
7/19/2017	100	7/16/2003	101	7/26/1910	100
7/6/2017	100	7/13/2003	100	7/23/1910	101
7/10/2016	102	8/16/2002	100	8/1/1902	100
7/7/2014	100	7/1/2001	101	7/15/1902	100
7/11/2013	100	7/6/2000	101	8/1/1901	100
6/11/2013	100	7/20/1998	100	7/31/1889	100
7/23/2012	100	6/26/1994	104	7/11/1888	100
7/21/2012	102	6/25/1991	100	8/8/1878	105
7/20/2012	101	7/2/1990	100	8/3/1878	100
7/19/2012	100	7/1/1990	102	8/2/1878	100
7/15/2012	100	6/30/1990	102	7/14/1878	100
7/2/2012	101	7/1/1990	102	8/12/1876	100
7/1/2012	101	6/30/1990	102	7/6/1876	101
6/26/2012	105	6/29/1990	102	7/4/1874	102
6/25/2012	105	6/27/1990	102	7/3/1874	101
6/24/2012	102	7/8/1989	103

Denver's Top 20 Seasonal 90 Degree Days (1872-Present)

Rank	Year	Number
1	2020	75
2	2012	73
3	2024	64
-	2022	64
-	2000	61
6	1994	60
7	2021	59
-	2018	59
9	2002	56
10	2016	55
	2005	55
12	2013	54
	2007	54
	2006	54
15	1978	52
16	2011	50
	1964	50
	1960	50
	1874	50
20	2010	49
	1980	49

Denver's Consecutive 90 Degree Day Streaks (1872-Present)

Rank	Number	Start Date	End Date
1	24	7/11/2012	8/3/2012
-	24	7/13/2008	8/5/2008
3	18	7/15/2011	8/1/2011
-	18	7/6/1901	7/23/1901
-	18	7/1/1874	7/18/1874
6	17	8/11/2020	8/27/2020
-	17	6/29/2000	7/15/2000
8	16	7/18/1987	8/2/1987
9	15	7/24/2024	8/7/2024
-	15	6/22/2012	7/6/2012
-	15	7/7/1934	7/21/1934
12	13	6/21/2002	7/3/2002
-	13	7/10/1878	7/22/1878
14	12	7/12/2022	7/23/2022
-	12	7/2/2020	7/13/2020
-	12	7/16/2016	7/27/2016
-	12	7/5/2005	7/16/2005
-	12	7/10/2003	7/21/2003
-	12	7/31/2000	8/11/2000
-	12	6/30/1989	7/11/1989
-	12	7/2/1966	7/13/1966
-	12	7/14/1963	7/25/1963
23	11	6/29/2007	7/9/2007
-	11	6/28/2001	7/8/2001
-	11	6/23/1990	7/3/1990
-	11	6/20/1900	6/30/1900
-	11	7/29/1878	8/8/1878

Denver's Warmest Summers
(June through August)

Rank	Year	Mean Temp
1	2012	76.3
2	2024	75.0
3	2020	74.9
4	2022	74.8
5	2021	74.6
6	1994	74.1
-	1934	74.1
8	1936	74.0
9	2006	73.9
10	1980	73.8
11	2011	73.7
-	1881	73.7
13	2007	73.5
14	2018	73.4
15	2013	73.3
16	2001	73.2
-	1988	73.2
-	1931	73.2
19	1874	73.1
20	2002	72.9
-	1954	72.9
-	1933	72.9

Denver's Coolest Summers
(June through August)

Rank	Year	Mean Temp
1	1915	65.8
2	1967	66.0
3	1895	66.4
4	1904	66.7
5	1891	67.2
6	1906	67.4
7	1928	67.5
-	1927	67.5
-	1912	67.5
10	2004	67.6
11	1908	67.7
12	1950	68.1
13	1897	68.2
14	2009	68.3
-	1992	68.3
-	1951	68.3
17	1920	68.5
18	1885	68.5
19	1872	68.5
20	1883	68.7

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