Wapato Threshold Days by Year (USC00458959)

17 fixed thresholds counted per year at Wapato (USC00458959): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wapato Thresholds

Wapato: days with a maximum temperature at or above 30 C (86 F) in 90 years, most in 1967 with 88.
Wapato: days with a maximum temperature at or above 90 F (32.2 C) in 90 years, most in 1958 with 71.
Wapato: days with a maximum temperature at or below 0 C (32 F) in 90 years, most in 1985 with 64.
Wapato: days with a maximum temperature at or above 35 C (95 F) in 89 years, most in 1958 with 38.
17 fixed thresholds have at least one qualifying day at Wapato.

Days at or above 30 C (86 F)

90 years with a qualifying day

Days per year at Wapato with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 88 in 1967.

Days at or above 30 C (86 F) per year at Wapato
Year	Days	Decade average
1916	33	39
1917	55	39
1918	26	39
1919	42	39
1920	43	57.5
1921	33	57.5
1924	68	57.5
1925	74	57.5
1926	66	57.5
1927	49	57.5
1928	60	57.5
1929	67	57.5
1930	60	63
1931	68	63
1932	51	63
1933	49	63
1934	76	63
1935	59	63
1936	69	63
1937	61	63
1938	80	63
1939	57	63
1940	82	64.2
1941	58	64.2
1942	66	64.2
1943	73	64.2
1944	71	64.2
1945	61	64.2
1946	51	64.2
1947	59	64.2
1949	57	64.2
1950	65	58.1
1951	67	58.1
1952	71	58.1
1953	49	58.1
1954	40	58.1
1956	55	58.1
1957	50	58.1
1958	84	58.1
1959	42	58.1
1960	63	61.3
1961	75	61.3
1962	56	61.3
1963	58	61.3
1964	34	61.3
1965	59	61.3
1966	58	61.3
1967	88	61.3
1968	52	61.3
1969	70	61.3
1970	69	70.1
1971	58	70.1
1972	73	70.1
1973	75	70.1
1974	80	70.1
1975	70	70.1
1976	59	70.1
1977	77	70.1
1978	54	70.1
1979	86	70.1
1980	61	63.6
1981	61	63.6
1982	56	63.6
1983	52	63.6
1984	64	63.6
1985	77	63.6
1986	67	63.6
1987	77	63.6
1988	67	63.6
1989	54	63.6
1990	68	59.5
1991	60	59.5
1992	62	59.5
1993	47	59.5
1994	79	59.5
1995	58	59.5
1996	52	59.5
1997	53	59.5
1998	69	59.5
1999	47	59.5
2000	58	63.6
2001	66	63.6
2002	66	63.6
2003	82	63.6
2004	61	63.6
2005	40	63.6
2006	73	63.6
2007	63	63.6
2010	54	53.5
2011	53	53.5

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

First to last qualifying date each year at Wapato
Year	First date	Last date
1916	1916-06-13	1916-09-21
1917	1917-06-14	1917-09-20
1918	1918-06-21	1918-09-28
1919	1919-05-21	1919-09-24
1920	1920-06-21	1920-09-04
1921	1921-05-24	1921-08-30
1924	1924-05-09	1924-09-16
1925	1925-03-20	1925-09-24
1926	1926-04-15	1926-09-06
1927	1927-04-25	1927-09-20
1928	1928-05-18	1928-09-23
1929	1929-05-19	1929-09-17
1930	1930-06-06	1930-09-21
1931	1931-04-29	1931-09-04
1932	1932-06-09	1932-10-02
1933	1933-04-27	1933-10-07
1934	1934-04-12	1934-09-18
1935	1935-05-21	1935-10-02
1936	1936-04-16	1936-10-09
1937	1937-05-02	1937-09-16
1938	1938-05-22	1938-09-27
1939	1939-04-28	1939-09-22
1940	1940-05-09	1940-09-26
1941	1941-05-11	1941-08-23
1942	1942-05-21	1942-09-27
1943	1943-04-13	1943-10-08
1944	1944-05-05	1944-09-26
1945	1945-05-02	1945-09-15
1946	1946-04-25	1946-09-11
1947	1947-04-13	1947-09-24
1949	1949-05-08	1949-09-27
1950	1950-05-12	1950-09-23
1951	1951-05-22	1951-09-19
1952	1952-04-25	1952-09-29
1953	1953-05-05	1953-09-15
1954	1954-05-16	1954-09-09
1956	1956-05-16	1956-09-19
1957	1957-04-29	1957-09-24
1958	1958-05-16	1958-10-04
1959	1959-05-13	1959-09-13
1960	1960-05-10	1960-09-18
1961	1961-05-20	1961-08-31
1962	1962-06-08	1962-09-26
1963	1963-05-20	1963-09-29
1964	1964-05-31	1964-08-24
1965	1965-05-27	1965-09-08
1966	1966-05-03	1966-09-23
1967	1967-05-20	1967-09-27
1968	1968-06-16	1968-09-13
1969	1969-05-08	1969-09-13
1970	1970-05-16	1970-09-01
1971	1971-05-02	1971-08-30
1972	1972-05-13	1972-09-16
1973	1973-05-12	1973-09-13
1974	1974-06-10	1974-09-26
1975	1975-05-14	1975-09-23
1976	1976-05-08	1976-09-30
1977	1977-04-07	1977-09-14
1978	1978-06-02	1978-09-26
1979	1979-05-15	1979-09-24
1980	1980-05-04	1980-10-07
1981	1981-05-01	1981-09-19
1982	1982-05-25	1982-09-19
1983	1983-05-21	1983-09-01
1984	1984-05-29	1984-09-19
1985	1985-05-03	1985-09-05
1986	1986-05-26	1986-09-06
1987	1987-04-28	1987-09-25
1988	1988-05-12	1988-10-10
1989	1989-05-07	1989-09-30
1990	1990-05-05	1990-09-30
1991	1991-06-02	1991-10-02
1992	1992-05-05	1992-10-02
1993	1993-05-12	1993-10-01
1994	1994-04-18	1994-09-29
1995	1995-05-25	1995-09-18
1996	1996-06-03	1996-09-30
1997	1997-05-13	1997-09-24
1998	1998-06-02	1998-09-18
1999	1999-05-24	1999-08-30
2000	2000-05-17	2000-09-21
2001	2001-05-13	2001-09-25
2002	2002-06-13	2002-09-20
2003	2003-05-24	2003-10-05
2004	2004-06-04	2004-09-29
2005	2005-05-27	2005-09-09
2006	2006-05-16	2006-10-02
2007	2007-05-08	2007-09-16
2010	2010-06-14	2010-09-29
2011	2011-06-07	2011-09-26

Every Fixed Threshold

Fixed thresholds at Wapato
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	90	88	1967	53
35 C (95 F): Days	89	38	1958	10
40 C (104 F): Days	33	6	1928	1
90 F (32.2 C): Days	90	71	1958	38
100 F (37.8 C): Days	74	17	1971	2
110 F (43.3 C): Days	2	1	1928	1
0 C (32 F): Ice days (max	90	64	1985	27
0 C (32 F): Frost days (min	89	151	1984	139
-10 C (14 F): Days with min	85	41	1916	17
-20 C (-4 F): Days with min	35	9	1950	2
-30 C (-22 F): Days with min	2	1	1919	1
20 C (68 F): Tropical nights (min	86	23	1971	2
25 C (77 F): Days with min	10	3	1979	3
10 mm (0.39 in): Days with 10 mm or more rain	76	10	1995	1
25 mm (0.98 in): Days with 25 mm or more rain	16	2	1996	1
10 cm (3.9 in): Days with 10 cm or more snowfall	27	3	1954	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	2	1996	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1916.

Download the Data

Data for Wapato 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).

Wapato Threshold Days by Year (USC00458959)

Key Facts for Wapato Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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