Chewelah Threshold Days by Year (USC00451395)

17 fixed thresholds counted per year at Chewelah (USC00451395): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chewelah Thresholds

Chewelah: days with a maximum temperature at or above 30 C (86 F) in 95 years, most in 2003 with 79.
Chewelah: days with a maximum temperature at or below 0 C (32 F) in 95 years, most in 1985 with 67.
Chewelah: days with a maximum temperature at or above 90 F (32.2 C) in 94 years, most in 2003 with 57.
Chewelah: days with a maximum temperature at or above 35 C (95 F) in 93 years, most in 2003 with 36.
17 fixed thresholds have at least one qualifying day at Chewelah.

Days at or above 30 C (86 F)

95 years with a qualifying day

Days per year at Chewelah with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 79 in 2003.

Days at or above 30 C (86 F) per year at Chewelah
Year	Days	Decade average
1926	49	44.3
1927	41	44.3
1928	44	44.3
1929	43	44.3
1930	45	51
1931	57	51
1932	45	51
1933	43	51
1934	66	51
1935	45	51
1936	57	51
1937	47	51
1939	54	51
1940	64	52
1941	46	52
1942	48	52
1943	57	52
1944	49	52
1945	60	52
1946	42	52
1947	45	52
1949	57	52
1950	56	48
1951	51	48
1952	53	48
1953	41	48
1954	31	48
1955	43	48
1956	57	48
1957	39	48
1958	74	48
1959	35	48
1960	48	43.3
1961	58	43.3
1962	37	43.3
1963	44	43.3
1964	20	43.3
1965	36	43.3
1966	45	43.3
1967	72	43.3
1968	32	43.3
1969	41	43.3
1970	50	39.1
1971	44	39.1
1972	35	39.1
1973	46	39.1
1974	40	39.1
1975	22	39.1
1976	17	39.1
1977	45	39.1
1978	26	39.1
1979	66	39.1
1980	27	49
1981	53	49
1982	50	49
1983	42	49
1984	44	49
1985	53	49
1986	62	49
1987	51	49
1988	61	49
1989	47	49
1990	64	52.7
1991	53	52.7
1992	65	52.7
1993	30	52.7
1994	70	52.7
1995	43	52.7
1996	45	52.7
1997	43	52.7
1998	65	52.7
1999	49	52.7
2000	43	57
2001	62	57
2003	79	57
2006	67	57
2007	57	57
2008	37	57
2009	54	57
2010	30	48.2
2011	39	48.2
2012	46	48.2
2013	62	48.2
2014	51	48.2
2015	62	48.2
2016	41	48.2
2017	62	48.2
2018	49	48.2
2019	40	48.2
2020	48	47
2021	64	47
2022	55	47
2023	58	47
2024	54	47
2025	3	47

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

First to last qualifying date each year at Chewelah
Year	First date	Last date
1926	1926-04-29	1926-08-25
1927	1927-06-06	1927-08-23
1928	1928-05-20	1928-09-23
1929	1929-05-21	1929-09-16
1930	1930-06-06	1930-09-17
1931	1931-05-12	1931-09-04
1932	1932-06-11	1932-09-28
1933	1933-06-02	1933-08-28
1934	1934-04-20	1934-09-07
1935	1935-06-04	1935-10-02
1936	1936-04-17	1936-09-21
1937	1937-06-01	1937-09-17
1939	1939-05-13	1939-09-23
1940	1940-05-22	1940-09-11
1941	1941-05-23	1941-08-22
1942	1942-06-29	1942-09-25
1943	1943-06-10	1943-10-08
1944	1944-05-27	1944-09-12
1945	1945-05-30	1945-09-14
1946	1946-04-25	1946-09-11
1947	1947-05-06	1947-09-24
1949	1949-05-09	1949-09-29
1950	1950-06-12	1950-09-24
1951	1951-05-23	1951-09-19
1952	1952-04-26	1952-09-27
1953	1953-07-07	1953-09-16
1954	1954-05-18	1954-08-31
1955	1955-06-10	1955-09-11
1956	1956-05-18	1956-09-20
1957	1957-05-30	1957-09-25
1958	1958-05-19	1958-09-12
1959	1959-06-20	1959-09-13
1960	1960-06-25	1960-09-15
1961	1961-05-26	1961-08-31
1962	1962-06-25	1962-09-26
1963	1963-05-30	1963-09-28
1964	1964-06-27	1964-08-23
1965	1965-06-06	1965-08-20
1966	1966-05-04	1966-09-23
1967	1967-06-16	1967-09-29
1968	1968-06-19	1968-08-13
1969	1969-06-04	1969-09-13
1970	1970-06-03	1970-09-01
1971	1971-06-22	1971-08-31
1972	1972-05-29	1972-09-05
1973	1973-05-15	1973-09-12
1974	1974-06-12	1974-09-26
1975	1975-07-02	1975-08-16
1976	1976-06-29	1976-09-02
1977	1977-04-24	1977-08-23
1978	1978-06-04	1978-08-11
1979	1979-06-03	1979-09-25
1980	1980-05-05	1980-10-07
1981	1981-06-26	1981-09-19
1982	1982-05-25	1982-09-07
1983	1983-05-24	1983-09-01
1984	1984-05-30	1984-09-19
1985	1985-05-18	1985-08-29
1986	1986-05-25	1986-09-07
1987	1987-04-27	1987-10-02
1988	1988-04-14	1988-09-14
1989	1989-06-04	1989-09-29
1990	1990-05-05	1990-09-29
1991	1991-06-10	1991-09-29
1992	1992-05-04	1992-10-02
1993	1993-05-11	1993-09-09
1994	1994-05-07	1994-09-27
1995	1995-05-28	1995-09-17
1996	1996-06-02	1996-09-12
1997	1997-05-12	1997-09-09
1998	1998-04-30	1998-09-16
1999	1999-05-23	1999-09-22
2000	2000-06-26	2000-09-14
2001	2001-05-12	2001-09-25
2003	2003-05-24	2003-10-04
2006	2006-05-15	2006-09-13
2007	2007-05-31	2007-09-13
2008	2008-05-17	2008-09-20
2009	2009-05-29	2009-09-25
2010	2010-07-07	2010-08-26
2011	2011-07-07	2011-09-25
2012	2012-04-24	2012-09-21
2013	2013-05-08	2013-09-16
2014	2014-06-24	2014-09-23
2015	2015-05-22	2015-09-13
2016	2016-04-21	2016-09-26
2017	2017-05-23	2017-09-13
2018	2018-04-28	2018-09-08
2019	2019-06-01	2019-09-06
2020	2020-05-30	2020-09-11
2021	2021-06-02	2021-09-10
2022	2022-06-27	2022-09-28
2023	2023-05-01	2023-09-17
2024	2024-06-22	2024-09-26
2025	2025-05-28	2025-06-01

Every Fixed Threshold

Fixed thresholds at Chewelah
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	95	79	2003	3
35 C (95 F): Days	93	36	2003	22
40 C (104 F): Days	24	6	2021	1
90 F (32.2 C): Days	94	57	2003	39
100 F (37.8 C): Days	74	16	1992	6
110 F (43.3 C): Days	2	1	1961	1
0 C (32 F): Ice days (max	95	67	1985	15
0 C (32 F): Frost days (min	93	207	1928	80
-10 C (14 F): Days with min	93	66	1985	10
-20 C (-4 F): Days with min	74	38	1949	3
-30 C (-22 F): Days with min	26	17	1949	3
20 C (68 F): Tropical nights (min	9	2	1994	2
10 mm (0.39 in): Days with 10 mm or more rain	71	23	1973	7
25 mm (0.98 in): Days with 25 mm or more rain	42	5	1998	3
50 mm (1.97 in): Days with 50 mm or more rain	3	1	1990	1
10 cm (3.9 in): Days with 10 cm or more snowfall	56	8	1969	2
25 cm (9.8 in): Days with 25 cm or more snowfall	6	1	1951	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1926.

Download the Data

Data for Chewelah 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Chewelah Threshold Days by Year (USC00451395)

Key Facts for Chewelah Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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