Denver-Stapleton Threshold Days by Year (USW00023062)

17 fixed thresholds counted per year at Denver-Stapleton (USW00023062): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Denver-Stapleton Thresholds

Denver-Stapleton: days with a maximum temperature at or above 30 C (86 F) in 79 years, most in 2020 with 96.
Denver-Stapleton: days with a maximum temperature at or above 90 F (32.2 C) in 79 years, most in 2012 with 67.
Denver-Stapleton: days with a maximum temperature at or below 0 C (32 F) in 79 years, most in 1983 with 41.
Denver-Stapleton: nights with a minimum temperature at or below 0 C (32 F) in 79 years, most in 1984 with 187.
17 fixed thresholds have at least one qualifying day at Denver-Stapleton.

Days at or above 30 C (86 F)

79 years with a qualifying day

Days per year at Denver-Stapleton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 96 in 2020.

Days at or above 30 C (86 F) per year at Denver-Stapleton
Year	Days	Decade average
1948	64	58
1949	52	58
1950	39	58.1
1951	49	58.1
1952	72	58.1
1953	54	58.1
1954	78	58.1
1955	64	58.1
1956	63	58.1
1957	46	58.1
1958	51	58.1
1959	65	58.1
1960	67	55.5
1961	47	55.5
1962	71	55.5
1963	59	55.5
1964	74	55.5
1965	34	55.5
1966	66	55.5
1967	28	55.5
1968	50	55.5
1969	59	55.5
1970	64	60.1
1971	64	60.1
1972	46	60.1
1973	61	60.1
1974	73	60.1
1975	51	60.1
1976	57	60.1
1977	58	60.1
1978	72	60.1
1979	55	60.1
1980	71	60.6
1981	66	60.6
1982	44	60.6
1983	63	60.6
1984	61	60.6
1985	52	60.6
1986	55	60.6
1987	58	60.6
1988	69	60.6
1989	67	60.6
1990	63	59.3
1991	58	59.3
1992	48	59.3
1993	52	59.3
1994	87	59.3
1995	60	59.3
1996	67	59.3
1997	50	59.3
1998	56	59.3
1999	52	59.3
2000	86	66.3
2001	74	66.3
2002	81	66.3
2003	66	66.3
2004	43	66.3
2005	77	66.3
2006	62	66.3
2007	72	66.3
2008	66	66.3
2009	36	66.3
2010	78	74
2011	68	74
2012	86	74
2013	70	74
2014	51	74
2015	66	74
2016	79	74
2017	84	74
2018	82	74
2019	76	74
2020	96	78.4
2021	81	78.4
2022	83	78.4
2023	54	78.4
2024	89	78.4
2025	65	78.4
2026	81	78.4

For each year, a bar from the first to the last day at Denver-Stapleton meeting 30 C (86 F).

First to last qualifying date each year at Denver-Stapleton
Year	First date	Last date
1948	1948-05-17	1948-09-18
1949	1949-06-16	1949-09-25
1950	1950-06-06	1950-10-12
1951	1951-05-28	1951-09-20
1952	1952-06-06	1952-09-27
1953	1953-05-21	1953-09-27
1954	1954-05-20	1954-10-02
1955	1955-06-07	1955-09-16
1956	1956-06-01	1956-09-20
1957	1957-06-05	1957-09-29
1958	1958-05-28	1958-09-22
1959	1959-06-06	1959-09-15
1960	1960-06-03	1960-09-13
1961	1961-05-10	1961-08-29
1962	1962-05-09	1962-10-10
1963	1963-05-06	1963-09-23
1964	1964-05-16	1964-10-01
1965	1965-06-22	1965-09-06
1966	1966-05-30	1966-09-29
1967	1967-05-24	1967-10-03
1968	1968-06-02	1968-09-11
1969	1969-05-25	1969-09-06
1970	1970-05-17	1970-09-20
1971	1971-06-03	1971-09-13
1972	1972-06-01	1972-09-27
1973	1973-06-07	1973-10-23
1974	1974-05-19	1974-09-10
1975	1975-06-03	1975-10-06
1976	1976-06-03	1976-09-11
1977	1977-06-01	1977-09-20
1978	1978-05-15	1978-10-01
1979	1979-06-13	1979-10-07
1980	1980-06-03	1980-09-30
1981	1981-06-06	1981-09-28
1982	1982-06-28	1982-09-10
1983	1983-06-18	1983-09-19
1984	1984-05-20	1984-09-19
1985	1985-06-06	1985-09-05
1986	1986-05-21	1986-09-14
1987	1987-06-04	1987-09-13
1988	1988-05-13	1988-09-20
1989	1989-04-21	1989-09-30
1990	1990-05-23	1990-10-05
1991	1991-05-10	1991-10-16
1992	1992-04-30	1992-10-03
1993	1993-05-26	1993-09-12
1994	1994-05-16	1994-09-29
1995	1995-06-13	1995-09-17
1996	1996-05-14	1996-10-11
1997	1997-05-17	1997-10-04
1998	1998-05-27	1998-09-28
1999	1999-06-04	1999-09-26
2000	2000-05-05	2000-09-18
2001	2001-06-03	2001-09-28
2002	2002-05-22	2002-09-17
2003	2003-05-29	2003-10-24
2004	2004-05-06	2004-09-19
2005	2005-05-21	2005-10-04
2006	2006-05-20	2006-08-31
2007	2007-05-14	2007-09-23
2008	2008-05-20	2008-09-27
2009	2009-06-23	2009-10-01
2010	2010-05-23	2010-09-29
2011	2011-06-03	2011-09-29
2012	2012-05-05	2012-09-24
2013	2013-05-15	2013-09-10
2014	2014-05-29	2014-09-28
2015	2015-06-03	2015-10-12
2016	2016-05-22	2016-10-17
2017	2017-05-07	2017-09-22
2018	2018-05-11	2018-10-04
2019	2019-06-14	2019-09-30
2020	2020-05-02	2020-10-07
2021	2021-06-04	2021-09-27
2022	2022-04-23	2022-09-29
2023	2023-06-20	2023-10-21
2024	2024-06-03	2024-10-05
2025	2025-06-01	2025-10-04
2026	2026-03-21	2026-08-31

Every Fixed Threshold

Fixed thresholds at Denver-Stapleton
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	79	96	2020	81
35 C (95 F): Days	77	36	2012	32
40 C (104 F): Days	4	1	1994	1
90 F (32.2 C): Days	79	67	2012	61
100 F (37.8 C): Days	32	6	2012	6
0 C (32 F): Ice days (max	79	41	1983	4
0 C (32 F): Frost days (min	79	187	1984	70
-10 C (14 F): Days with min	79	58	1948	9
-20 C (-4 F): Days with min	70	15	1962	3
-30 C (-22 F): Days with min	5	2	1951	1
20 C (68 F): Tropical nights (min	35	6	2006	1
10 mm (0.39 in): Days with 10 mm or more rain	79	17	1973	8
25 mm (0.98 in): Days with 25 mm or more rain	71	7	1997	2
50 mm (1.97 in): Days with 50 mm or more rain	19	2	1957	2
10 cm (3.9 in): Days with 10 cm or more snowfall	77	10	1951	1
25 cm (9.8 in): Days with 25 cm or more snowfall	21	3	1959	2
50 cm (19.7 in): Days with 50 cm or more snowfall	3	1	1982	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

Download the Data

Data for Denver-Stapleton threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Denver-Stapleton Threshold Days by Year (USW00023062)

Key Facts for Denver-Stapleton Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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