Stehekin 4 NW Threshold Days by Year (USC00458059)

18 fixed thresholds counted per year at Stehekin 4 NW (USC00458059): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Stehekin 4 NW Thresholds

Stehekin 4 NW: days with a maximum temperature at or above 30 C (86 F) in 105 years, most in 1958 with 55.
Stehekin 4 NW: days with a maximum temperature at or above 90 F (32.2 C) in 105 years, most in 2021 with 38.
Stehekin 4 NW: days with a maximum temperature at or below 0 C (32 F) in 105 years, most in 1985 with 70.
Stehekin 4 NW: nights with a minimum temperature at or below 0 C (32 F) in 104 years, most in 1935 with 180.
18 fixed thresholds have at least one qualifying day at Stehekin 4 NW.

Days at or above 30 C (86 F)

105 years with a qualifying day

Days per year at Stehekin 4 NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 55 in 1958.

Days at or above 30 C (86 F) per year at Stehekin 4 NW
Year	Days	Decade average
1906	24	19
1907	14	19
1919	31	31
1920	32	32.8
1921	25	32.8
1922	35	32.8
1923	31	32.8
1924	43	32.8
1925	39	32.8
1926	36	32.8
1927	26	32.8
1928	33	32.8
1929	28	32.8
1930	25	21.7
1931	33	21.7
1932	18	21.7
1933	22	21.7
1934	24	21.7
1935	13	21.7
1936	19	21.7
1937	15	21.7
1938	21	21.7
1939	27	21.7
1940	19	17.7
1941	20	17.7
1942	25	17.7
1943	16	17.7
1944	17	17.7
1945	22	17.7
1946	18	17.7
1947	13	17.7
1948	5	17.7
1949	22	17.7
1950	16	23.9
1951	25	23.9
1955	18	23.9
1956	22	23.9
1957	10	23.9
1958	55	23.9
1959	21	23.9
1960	32	24.3
1961	43	24.3
1962	16	24.3
1963	20	24.3
1964	12	24.3
1965	22	24.3
1966	15	24.3
1967	42	24.3
1968	20	24.3
1969	21	24.3
1970	36	35.2
1971	40	35.2
1972	31	35.2
1973	42	35.2
1974	42	35.2
1975	23	35.2
1976	16	35.2
1977	43	35.2
1978	34	35.2
1979	45	35.2
1980	25	36.1
1981	37	36.1
1982	39	36.1
1983	26	36.1
1984	26	36.1
1985	54	36.1
1986	47	36.1
1987	41	36.1
1988	38	36.1
1989	28	36.1
1990	41	37.3
1991	32	37.3
1992	41	37.3
1993	24	37.3
1994	45	37.3
1995	31	37.3
1996	34	37.3
1998	55	37.3
1999	33	37.3
2000	32	39.4
2001	38	39.4
2002	44	39.4
2003	51	39.4
2005	43	39.4
2006	47	39.4
2007	21	39.4
2008	32	39.4
2009	47	39.4
2010	29	37.1
2011	38	37.1
2012	44	37.1
2013	37	37.1
2014	37	37.1
2015	49	37.1
2016	37	37.1
2017	49	37.1
2018	27	37.1
2019	24	37.1
2020	40	40.1
2021	50	40.1
2022	35	40.1
2023	33	40.1
2024	42	40.1
2025	46	40.1
2026	35	40.1

For each year, a bar from the first to the last day at Stehekin 4 NW meeting 30 C (86 F).

First to last qualifying date each year at Stehekin 4 NW
Year	First date	Last date
1906	1906-07-02	1906-08-27
1907	1907-07-10	1907-08-02
1919	1919-05-21	1919-08-20
1920	1920-06-21	1920-08-22
1921	1921-07-11	1921-08-29
1922	1922-05-31	1922-09-16
1923	1923-06-28	1923-09-01
1924	1924-05-10	1924-09-07
1925	1925-06-19	1925-09-03
1926	1926-06-03	1926-08-25
1927	1927-07-17	1927-08-23
1928	1928-05-20	1928-09-04
1929	1929-06-24	1929-09-14
1930	1930-07-08	1930-09-05
1931	1931-05-12	1931-09-03
1932	1932-06-12	1932-09-06
1933	1933-06-13	1933-08-25
1934	1934-05-27	1934-09-05
1935	1935-07-13	1935-09-04
1936	1936-05-26	1936-08-20
1937	1937-06-01	1937-08-17
1938	1938-06-21	1938-09-03
1939	1939-06-28	1939-08-24
1940	1940-06-10	1940-08-30
1941	1941-06-22	1941-08-21
1942	1942-06-30	1942-08-23
1943	1943-06-29	1943-09-12
1944	1944-06-10	1944-09-12
1945	1945-06-20	1945-08-23
1946	1946-06-19	1946-08-24
1947	1947-05-24	1947-08-14
1948	1948-06-07	1948-07-31
1949	1949-05-09	1949-09-02
1950	1950-06-20	1950-09-01
1951	1951-06-28	1951-09-18
1955	1955-06-10	1955-09-08
1956	1956-05-18	1956-08-22
1957	1957-05-29	1957-09-11
1958	1958-05-21	1958-08-26
1959	1959-06-19	1959-08-09
1960	1960-06-23	1960-09-13
1961	1961-06-02	1961-08-23
1962	1962-07-11	1962-09-05
1963	1963-06-14	1963-09-06
1964	1964-07-01	1964-08-23
1965	1965-06-09	1965-08-19
1966	1966-05-25	1966-09-05
1967	1967-06-15	1967-09-21
1968	1968-06-18	1968-08-10
1969	1969-05-09	1969-09-12
1970	1970-06-02	1970-08-27
1971	1971-07-13	1971-08-30
1972	1972-05-28	1972-09-04
1973	1973-05-14	1973-09-11
1974	1974-06-10	1974-09-25
1975	1975-05-31	1975-09-15
1976	1976-06-29	1976-09-02
1977	1977-06-07	1977-08-22
1978	1978-06-03	1978-08-10
1979	1979-06-01	1979-08-14
1980	1980-07-02	1980-08-13
1981	1981-06-26	1981-09-19
1982	1982-05-25	1982-09-09
1983	1983-05-24	1983-08-24
1984	1984-06-15	1984-09-18
1985	1985-05-19	1985-08-30
1986	1986-05-27	1986-09-05
1987	1987-05-08	1987-09-13
1988	1988-06-16	1988-09-06
1989	1989-06-02	1989-08-15
1990	1990-06-24	1990-09-12
1991	1991-06-29	1991-09-29
1992	1992-05-07	1992-08-27
1993	1993-05-12	1993-09-30
1994	1994-05-08	1994-09-26
1995	1995-05-29	1995-09-18
1996	1996-07-01	1996-09-29
1998	1998-05-06	1998-09-17
1999	1999-05-25	1999-08-29
2000	2000-06-17	2000-08-25
2001	2001-05-23	2001-08-31
2002	2002-06-15	2002-09-13
2003	2003-05-30	2003-09-06
2005	2005-05-28	2005-09-08
2006	2006-05-17	2006-09-13
2007	2007-06-01	2007-09-16
2008	2008-05-17	2008-08-20
2009	2009-05-30	2009-09-24
2010	2010-07-09	2010-08-26
2011	2011-06-07	2011-09-24
2012	2012-05-15	2012-09-06
2013	2013-05-07	2013-09-16
2014	2014-05-15	2014-09-08
2015	2015-05-31	2015-09-13
2016	2016-05-08	2016-08-27
2017	2017-05-24	2017-09-13
2018	2018-05-16	2018-08-18
2019	2019-05-12	2019-08-31
2020	2020-06-20	2020-10-07
2021	2021-06-01	2021-08-30
2022	2022-06-27	2022-09-05
2023	2023-05-20	2023-08-29
2024	2024-05-12	2024-09-06
2025	2025-06-08	2025-09-21
2026	2026-05-04	2026-08-27

Every Fixed Threshold

Fixed thresholds at Stehekin 4 NW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	105	55	1958	35
35 C (95 F): Days	83	24	1998	4
40 C (104 F): Days	8	3	1977	2
90 F (32.2 C): Days	105	38	2021	16
100 F (37.8 C): Days	38	10	1977	1
0 C (32 F): Ice days (max	105	70	1985	7
0 C (32 F): Frost days (min	104	180	1935	80
-10 C (14 F): Days with min	97	43	1922	8
-20 C (-4 F): Days with min	26	12	1930	2
20 C (68 F): Tropical nights (min	37	7	1906	3
25 C (77 F): Days with min	1	1	1907	1
10 mm (0.39 in): Days with 10 mm or more rain	99	46	2020	11
25 mm (0.98 in): Days with 25 mm or more rain	98	16	2006	2
50 mm (1.97 in): Days with 50 mm or more rain	56	5	1933	4
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1949	1
10 cm (3.9 in): Days with 10 cm or more snowfall	90	32	1996	2
25 cm (9.8 in): Days with 25 cm or more snowfall	80	9	1937	2
50 cm (19.7 in): Days with 50 cm or more snowfall	24	3	1946	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1906.

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Data for Stehekin 4 NW 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).

Stehekin 4 NW Threshold Days by Year (USC00458059)

Key Facts for Stehekin 4 NW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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