Wahluke Threshold Days by Year (USC00458903)

16 fixed thresholds counted per year at Wahluke (USC00458903): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wahluke Thresholds

Wahluke: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 1934 with 117.
Wahluke: days with a maximum temperature at or above 35 C (95 F) in 37 years, most in 1934 with 60.
Wahluke: days with a maximum temperature at or above 90 F (32.2 C) in 37 years, most in 1934 with 96.
Wahluke: days with a maximum temperature at or above 100 F (37.8 C) in 37 years, most in 1931 with 38.
16 fixed thresholds have at least one qualifying day at Wahluke.

Days at or above 30 C (86 F)

37 years with a qualifying day

Days per year at Wahluke with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 117 in 1934.

Days at or above 30 C (86 F) per year at Wahluke
Year	Days	Decade average
1905	65	65.8
1906	73	65.8
1907	55	65.8
1908	71	65.8
1909	65	65.8
1910	71	75.7
1911	69	75.7
1912	61	75.7
1914	77	75.7
1915	72	75.7
1916	69	75.7
1917	81	75.7
1918	101	75.7
1919	80	75.7
1920	65	78.7
1921	70	78.7
1922	67	78.7
1923	83	78.7
1924	93	78.7
1925	81	78.7
1926	97	78.7
1927	85	78.7
1929	67	78.7
1930	99	91.9
1931	101	91.9
1932	75	91.9
1933	79	91.9
1934	117	91.9
1935	90	91.9
1936	109	91.9
1937	80	91.9
1938	101	91.9
1939	68	91.9
1940	108	91
1941	77	91
1942	86	91
1943	93	91

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

First to last qualifying date each year at Wahluke
Year	First date	Last date
1905	1905-04-24	1905-09-23
1906	1906-04-20	1906-09-29
1907	1907-05-15	1907-09-24
1908	1908-05-06	1908-09-21
1909	1909-05-03	1909-09-17
1910	1910-04-18	1910-09-20
1911	1911-05-30	1911-09-02
1912	1912-05-08	1912-09-13
1914	1914-05-01	1914-09-24
1915	1915-05-04	1915-09-17
1916	1916-06-03	1916-09-29
1917	1917-05-09	1917-10-11
1918	1918-04-19	1918-10-12
1919	1919-04-26	1919-09-24
1920	1920-05-07	1920-09-17
1921	1921-05-24	1921-09-27
1922	1922-06-02	1922-09-27
1923	1923-04-16	1923-09-30
1924	1924-05-02	1924-09-16
1925	1925-04-09	1925-08-31
1926	1926-04-14	1926-09-13
1927	1927-04-24	1927-09-26
1929	1929-04-26	1929-10-15
1930	1930-04-20	1930-09-21
1931	1931-04-27	1931-10-01
1932	1932-06-09	1932-10-02
1933	1933-04-27	1933-10-09
1934	1934-04-06	1934-10-11
1935	1935-05-03	1935-10-03
1936	1936-04-12	1936-10-10
1937	1937-05-01	1937-09-20
1938	1938-04-29	1938-09-27
1939	1939-04-18	1939-09-26
1940	1940-05-09	1940-10-18
1941	1941-04-22	1941-09-25
1942	1942-04-19	1942-10-06
1943	1943-04-12	1943-10-08

Every Fixed Threshold

Fixed thresholds at Wahluke
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	37	117	1934	93
35 C (95 F): Days	37	60	1934	41
40 C (104 F): Days	36	21	1942	6
45 C (113 F): Days	7	3	1941	1
90 F (32.2 C): Days	37	96	1934	72
100 F (37.8 C): Days	37	38	1931	16
110 F (43.3 C): Days	17	4	1926	3
0 C (32 F): Ice days (max	36	48	1916	14
0 C (32 F): Frost days (min	34	131	1911	84
-10 C (14 F): Days with min	33	37	1916	14
-20 C (-4 F): Days with min	13	11	1930	1
20 C (68 F): Tropical nights (min	34	24	1941	9
25 C (77 F): Days with min	13	2	1907	2
10 mm (0.39 in): Days with 10 mm or more rain	28	8	1906	3
25 mm (0.98 in): Days with 25 mm or more rain	4	1	1905	1
10 cm (3.9 in): Days with 10 cm or more snowfall	1	1	1943	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1905.

Download the Data

Data for Wahluke 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).

Wahluke Threshold Days by Year (USC00458903)

Key Facts for Wahluke Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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