Colville Threshold Days by Year (USC00451630)

16 fixed thresholds counted per year at Colville (USC00451630): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Colville Thresholds

Colville: nights with a minimum temperature at or below 0 C (32 F) in 78 years, most in 1911 with 210.
Colville: nights with a minimum temperature at or below -10 C (14 F) in 78 years, most in 1916 with 62.
Colville: days with a maximum temperature at or above 30 C (86 F) in 77 years, most in 1922 with 77.
Colville: days with a maximum temperature at or above 90 F (32.2 C) in 77 years, most in 2013 with 53.
16 fixed thresholds have at least one qualifying day at Colville.

Days at or above 30 C (86 F)

77 years with a qualifying day

Days per year at Colville with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 77 in 1922.

Days at or above 30 C (86 F) per year at Colville
Year	Days	Decade average
1901	34	41.2
1902	34	41.2
1903	38	41.2
1904	47	41.2
1905	34	41.2
1906	53	41.2
1907	32	41.2
1908	52	41.2
1909	47	41.2
1910	55	52.8
1911	46	52.8
1912	33	52.8
1913	38	52.8
1914	60	52.8
1915	46	52.8
1916	57	52.8
1917	61	52.8
1918	73	52.8
1919	59	52.8
1920	55	56.4
1921	56	56.4
1922	77	56.4
1923	57	56.4
1924	60	56.4
1925	71	56.4
1926	47	56.4
1927	38	56.4
1928	48	56.4
1929	55	56.4
1930	52	48.4
1931	58	48.4
1932	41	48.4
1933	40	48.4
1934	69	48.4
1935	45	48.4
1936	60	48.4
1937	37	48.4
1938	43	48.4
1939	39	48.4
1940	45	38.3
1941	23	38.3
1942	30	38.3
1943	24	38.3
1944	31	38.3
1945	56	38.3
1946	41	38.3
1947	39	38.3
1948	34	38.3
1949	60	38.3
1950	62	55.7
1951	53	55.7
1952	52	55.7
1994	69	57.8
1996	46	57.8
1997	49	57.8
1998	69	57.8
1999	56	57.8
2000	45	60.7
2001	62	60.7
2002	66	60.7
2007	68	60.7
2008	51	60.7
2009	72	60.7
2010	47	59
2011	54	59
2012	56	59
2013	75	59
2014	55	59
2015	77	59
2016	48	59
2017	69	59
2019	50	59
2020	46	61.2
2021	64	61.2
2023	71	61.2
2024	59	61.2
2026	66	61.2

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

First to last qualifying date each year at Colville
Year	First date	Last date
1901	1901-05-25	1901-08-31
1902	1902-05-26	1902-10-03
1903	1903-05-30	1903-08-19
1904	1904-05-21	1904-10-02
1905	1905-05-31	1905-09-04
1906	1906-04-21	1906-09-19
1907	1907-06-18	1907-09-25
1908	1908-05-06	1908-09-13
1909	1909-06-01	1909-09-16
1910	1910-04-23	1910-09-21
1911	1911-05-30	1911-09-11
1912	1912-05-14	1912-08-25
1913	1913-05-30	1913-08-30
1914	1914-05-02	1914-09-07
1915	1915-06-23	1915-09-04
1916	1916-05-16	1916-09-17
1917	1917-06-14	1917-09-22
1918	1918-06-07	1918-09-28
1919	1919-05-20	1919-09-24
1920	1920-06-21	1920-09-17
1921	1921-05-18	1921-08-30
1922	1922-05-15	1922-09-18
1923	1923-05-08	1923-09-14
1924	1924-05-10	1924-09-16
1925	1925-06-15	1925-09-23
1926	1926-04-15	1926-08-25
1927	1927-06-06	1927-08-23
1928	1928-05-20	1928-09-23
1929	1929-05-20	1929-09-16
1930	1930-06-06	1930-09-08
1931	1931-05-01	1931-09-03
1932	1932-04-12	1932-10-05
1933	1933-06-03	1933-09-18
1934	1934-04-20	1934-09-06
1935	1935-05-14	1935-09-10
1936	1936-04-16	1936-09-21
1937	1937-05-02	1937-09-15
1938	1938-06-04	1938-09-18
1939	1939-04-28	1939-08-27
1940	1940-05-23	1940-09-11
1941	1941-06-12	1941-08-21
1942	1942-06-30	1942-09-04
1943	1943-06-29	1943-09-12
1944	1944-06-29	1944-09-12
1945	1945-05-29	1945-09-02
1946	1946-04-25	1946-09-01
1947	1947-05-06	1947-09-15
1948	1948-05-25	1948-09-13
1949	1949-05-08	1949-09-28
1950	1950-06-11	1950-09-22
1951	1951-05-22	1951-09-18
1952	1952-04-25	1952-09-26
1994	1994-05-07	1994-09-27
1996	1996-06-02	1996-09-12
1997	1997-05-12	1997-09-25
1998	1998-04-30	1998-09-16
1999	1999-05-23	1999-09-22
2000	2000-06-26	2000-09-17
2001	2001-05-12	2001-09-25
2002	2002-06-12	2002-09-22
2007	2007-05-31	2007-09-15
2008	2008-05-16	2008-10-01
2009	2009-05-17	2009-09-25
2010	2010-06-12	2010-10-01
2011	2011-06-28	2011-09-24
2012	2012-05-14	2012-09-20
2013	2013-05-06	2013-09-14
2014	2014-06-22	2014-09-21
2015	2015-05-21	2015-09-13
2016	2016-04-20	2016-09-01
2017	2017-05-22	2017-09-12
2019	2019-05-12	2019-09-06
2020	2020-06-24	2020-09-12
2021	2021-05-17	2021-09-10
2023	2023-04-30	2023-09-16
2024	2024-05-10	2024-09-25
2026	2026-05-27	2026-09-21

Every Fixed Threshold

Fixed thresholds at Colville
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	77	77	1922	66
35 C (95 F): Days	75	36	2021	15
40 C (104 F): Days	15	7	1994	2
90 F (32.2 C): Days	77	53	2013	41
100 F (37.8 C): Days	59	16	1994	2
110 F (43.3 C): Days	1	1	2021	1
0 C (32 F): Ice days (max	77	69	1916	3
0 C (32 F): Frost days (min	78	210	1911	76
-10 C (14 F): Days with min	78	62	1916	4
-20 C (-4 F): Days with min	54	21	1949	6
-30 C (-22 F): Days with min	10	9	1950	9
20 C (68 F): Tropical nights (min	9	2	1930	1
10 mm (0.39 in): Days with 10 mm or more rain	74	27	1998	3
25 mm (0.98 in): Days with 25 mm or more rain	32	5	2012	2
10 cm (3.9 in): Days with 10 cm or more snowfall	57	8	1996	1
25 cm (9.8 in): Days with 25 cm or more snowfall	4	1	1944	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.

Download the Data

Data for Colville 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).

Colville Threshold Days by Year (USC00451630)

Key Facts for Colville Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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