Wallowa Threshold Days by Year (USC00358997)

17 fixed thresholds counted per year at Wallowa (USC00358997): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wallowa Thresholds

Wallowa: days with 10 mm (0.39 in) or more of precipitation in 109 years, most in 1926 with 20.
Wallowa: nights with a minimum temperature at or below 0 C (32 F) in 108 years, most in 1939 with 233.
Wallowa: nights with a minimum temperature at or below -10 C (14 F) in 108 years, most in 1985 with 85.
Wallowa: days with a maximum temperature at or above 30 C (86 F) in 106 years, most in 1940 with 78.
17 fixed thresholds have at least one qualifying day at Wallowa.

Days at or above 30 C (86 F)

106 years with a qualifying day

Days per year at Wallowa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 78 in 1940.

Days at or above 30 C (86 F) per year at Wallowa
Year	Days	Decade average
1904	41	41.2
1905	45	41.2
1906	55	41.2
1907	26	41.2
1908	48	41.2
1909	32	41.2
1910	36	39.3
1911	29	39.3
1912	16	39.3
1914	37	39.3
1915	44	39.3
1917	67	39.3
1918	38	39.3
1919	47	39.3
1920	39	45.4
1921	36	45.4
1922	47	45.4
1923	44	45.4
1924	51	45.4
1925	53	45.4
1926	55	45.4
1927	38	45.4
1930	52	56.5
1931	54	56.5
1932	44	56.5
1933	41	56.5
1934	67	56.5
1935	49	56.5
1936	64	56.5
1937	56	56.5
1938	70	56.5
1939	68	56.5
1940	78	46.9
1941	42	46.9
1942	56	46.9
1943	52	46.9
1944	47	46.9
1945	51	46.9
1947	33	46.9
1948	20	46.9
1949	43	46.9
1956	46	44.3
1957	39	44.3
1958	57	44.3
1959	35	44.3
1960	40	34.8
1961	50	34.8
1962	28	34.8
1963	37	34.8
1964	11	34.8
1965	26	34.8
1966	41	34.8
1968	38	34.8
1969	42	34.8
1970	52	43.2
1971	49	43.2
1972	33	43.2
1973	49	43.2
1974	54	43.2
1975	28	43.2
1976	29	43.2
1977	51	43.2
1978	31	43.2
1979	56	43.2
1980	22	43.3
1981	46	43.3
1982	39	43.3
1983	37	43.3
1984	44	43.3
1985	43	43.3
1986	55	43.3
1987	59	43.3
1988	55	43.3
1989	33	43.3
1990	60	50.9
1991	50	50.9
1992	47	50.9
1993	33	50.9
1994	66	50.9
1995	45	50.9
1996	55	50.9
1999	51	50.9
2000	44	55.7
2001	60	55.7
2002	45	55.7
2004	48	55.7
2005	55	55.7
2006	66	55.7
2007	63	55.7
2008	53	55.7
2009	67	55.7
2010	43	56.5
2011	58	56.5
2012	62	56.5
2015	59	56.5
2016	51	56.5
2017	76	56.5
2018	51	56.5
2019	52	56.5
2020	52	61.4
2021	75	61.4
2022	73	61.4
2023	59	61.4
2024	52	61.4
2025	64	61.4
2026	55	61.4

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

First to last qualifying date each year at Wallowa
Year	First date	Last date
1904	1904-06-17	1904-09-16
1905	1905-05-16	1905-09-23
1906	1906-05-09	1906-09-30
1907	1907-05-31	1907-09-24
1908	1908-06-14	1908-09-12
1909	1909-06-01	1909-09-16
1910	1910-04-23	1910-09-20
1911	1911-06-10	1911-09-02
1912	1912-06-19	1912-08-26
1914	1914-05-30	1914-09-24
1915	1915-06-23	1915-09-05
1917	1917-06-08	1917-09-19
1918	1918-06-06	1918-09-20
1919	1919-05-18	1919-09-16
1920	1920-06-29	1920-08-24
1921	1921-06-22	1921-08-31
1922	1922-06-02	1922-08-29
1923	1923-06-09	1923-09-14
1924	1924-05-10	1924-09-17
1925	1925-06-18	1925-09-02
1926	1926-04-30	1926-08-27
1927	1927-04-24	1927-08-23
1930	1930-05-27	1930-09-20
1931	1931-05-12	1931-09-27
1932	1932-06-12	1932-09-16
1933	1933-05-29	1933-09-13
1934	1934-04-21	1934-10-11
1935	1935-06-07	1935-10-10
1936	1936-04-21	1936-09-26
1937	1937-05-03	1937-09-19
1938	1938-05-26	1938-09-26
1939	1939-04-28	1939-10-13
1940	1940-05-08	1940-09-11
1941	1941-05-11	1941-08-22
1942	1942-05-21	1942-10-09
1943	1943-07-02	1943-10-04
1944	1944-05-28	1944-09-24
1945	1945-06-18	1945-10-07
1947	1947-07-04	1947-09-24
1948	1948-05-27	1948-09-15
1949	1949-05-12	1949-09-28
1956	1956-05-17	1956-09-25
1957	1957-05-31	1957-09-30
1958	1958-05-18	1958-09-10
1959	1959-05-13	1959-09-12
1960	1960-06-28	1960-09-27
1961	1961-05-25	1961-08-24
1962	1962-06-24	1962-09-26
1963	1963-06-14	1963-09-29
1964	1964-06-23	1964-08-23
1965	1965-06-10	1965-08-18
1966	1966-05-03	1966-09-22
1968	1968-06-16	1968-09-10
1969	1969-06-03	1969-09-11
1970	1970-05-16	1970-08-31
1971	1971-06-21	1971-09-10
1972	1972-05-28	1972-09-04
1973	1973-05-14	1973-09-11
1974	1974-06-11	1974-09-25
1975	1975-05-14	1975-09-14
1976	1976-05-13	1976-09-29
1977	1977-04-23	1977-09-04
1978	1978-06-05	1978-09-26
1979	1979-05-22	1979-10-06
1980	1980-07-07	1980-10-06
1981	1981-06-25	1981-09-19
1982	1982-06-16	1982-09-08
1983	1983-05-24	1983-08-31
1984	1984-05-29	1984-09-18
1985	1985-05-23	1985-08-29
1986	1986-05-25	1986-09-07
1987	1987-04-27	1987-10-03
1988	1988-05-12	1988-10-08
1989	1989-06-05	1989-09-29
1990	1990-05-05	1990-09-24
1991	1991-06-10	1991-10-11
1992	1992-05-05	1992-10-01
1993	1993-05-11	1993-10-04
1994	1994-05-25	1994-09-28
1995	1995-05-29	1995-09-17
1996	1996-06-02	1996-10-09
1999	1999-05-23	1999-09-23
2000	2000-06-04	2000-09-17
2001	2001-05-12	2001-10-01
2002	2002-06-13	2002-09-15
2004	2004-06-03	2004-09-27
2005	2005-05-27	2005-09-08
2006	2006-05-14	2006-09-29
2007	2007-05-08	2007-09-13
2008	2008-05-16	2008-10-01
2009	2009-05-17	2009-09-28
2010	2010-06-24	2010-10-02
2011	2011-06-22	2011-10-01
2012	2012-04-23	2012-09-20
2015	2015-06-06	2015-10-16
2016	2016-06-03	2016-09-29
2017	2017-05-04	2017-09-12
2018	2018-05-15	2018-09-07
2019	2019-06-11	2019-09-15
2020	2020-05-28	2020-09-30
2021	2021-05-06	2021-09-27
2022	2022-06-22	2022-10-06
2023	2023-04-30	2023-09-17
2024	2024-06-06	2024-09-28
2025	2025-05-25	2025-09-28
2026	2026-05-12	2026-08-31

Every Fixed Threshold

Fixed thresholds at Wallowa
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	106	78	1940	55
35 C (95 F): Days	101	33	2021	15
40 C (104 F): Days	25	4	2021	2
90 F (32.2 C): Days	106	58	2017	35
100 F (37.8 C): Days	60	13	2021	2
110 F (43.3 C): Days	1	1	1939	1
0 C (32 F): Ice days (max	106	82	1985	9
0 C (32 F): Frost days (min	108	233	1939	91
-10 C (14 F): Days with min	108	85	1985	6
-20 C (-4 F): Days with min	87	26	1949	3
-30 C (-22 F): Days with min	27	7	1930	1
20 C (68 F): Tropical nights (min	5	3	1910	1
10 mm (0.39 in): Days with 10 mm or more rain	109	20	1926	6
25 mm (0.98 in): Days with 25 mm or more rain	54	4	1958	2
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1982	1
10 cm (3.9 in): Days with 10 cm or more snowfall	75	9	1921	1
25 cm (9.8 in): Days with 25 cm or more snowfall	14	4	2019	4

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1904.

Download the Data

Data for Wallowa 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).

Wallowa Threshold Days by Year (USC00358997)

Key Facts for Wallowa Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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