Lake Kachess Threshold Days by Year (USC00454406)

17 fixed thresholds counted per year at Lake Kachess (USC00454406): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lake Kachess Thresholds

Lake Kachess: days with a maximum temperature at or above 30 C (86 F) in 65 years, most in 1958 with 36.
Lake Kachess: days with 10 mm (0.39 in) or more of precipitation in 65 years, most in 1933 with 69.
Lake Kachess: days with 25 mm (0.98 in) or more of precipitation in 65 years, most in 1932 with 21.
Lake Kachess: days with a maximum temperature at or below 0 C (32 F) in 64 years, most in 1916 with 61.
17 fixed thresholds have at least one qualifying day at Lake Kachess.

Days at or above 30 C (86 F)

65 years with a qualifying day

Days per year at Lake Kachess with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 36 in 1958.

Days at or above 30 C (86 F) per year at Lake Kachess
Year	Days	Decade average
1910	12	15.4
1911	13	15.4
1912	14	15.4
1913	18	15.4
1914	19	15.4
1915	24	15.4
1916	16	15.4
1917	15	15.4
1918	14	15.4
1919	9	15.4
1920	17	14
1921	3	14
1922	14	14
1923	12	14
1924	16	14
1925	18	14
1926	18	14
1927	14	14
1928	17	14
1929	11	14
1930	15	18.1
1931	17	18.1
1932	7	18.1
1933	14	18.1
1934	20	18.1
1935	15	18.1
1936	18	18.1
1937	11	18.1
1938	34	18.1
1939	30	18.1
1940	27	19.5
1941	25	19.5
1942	35	19.5
1943	18	19.5
1944	19	19.5
1945	24	19.5
1946	16	19.5
1947	5	19.5
1948	9	19.5
1949	17	19.5
1950	21	16.3
1951	20	16.3
1952	22	16.3
1953	13	16.3
1954	1	16.3
1955	15	16.3
1956	18	16.3
1957	7	16.3
1958	36	16.3
1959	10	16.3
1960	12	15.7
1961	30	15.7
1962	14	15.7
1963	10	15.7
1964	8	15.7
1965	13	15.7
1966	10	15.7
1967	30	15.7
1968	15	15.7
1969	15	15.7
1970	22	17.6
1973	24	17.6
1974	20	17.6
1975	16	17.6
1976	6	17.6

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

First to last qualifying date each year at Lake Kachess
Year	First date	Last date
1910	1910-05-23	1910-08-19
1911	1911-06-11	1911-08-16
1912	1912-06-07	1912-08-23
1913	1913-06-01	1913-08-25
1914	1914-05-31	1914-08-26
1915	1915-06-22	1915-08-30
1916	1916-06-15	1916-08-30
1917	1917-06-14	1917-08-29
1918	1918-06-13	1918-09-01
1919	1919-07-09	1919-08-31
1920	1920-07-07	1920-08-22
1921	1921-08-08	1921-08-14
1922	1922-06-02	1922-09-12
1923	1923-06-29	1923-09-14
1924	1924-05-11	1924-09-08
1925	1925-06-21	1925-08-21
1926	1926-06-04	1926-08-26
1927	1927-07-17	1927-08-18
1928	1928-05-21	1928-09-05
1929	1929-07-29	1929-09-14
1930	1930-07-10	1930-09-05
1931	1931-05-31	1931-08-24
1932	1932-06-12	1932-09-06
1933	1933-06-13	1933-08-24
1934	1934-04-22	1934-09-04
1935	1935-07-13	1935-09-09
1936	1936-05-26	1936-09-21
1937	1937-06-02	1937-09-15
1938	1938-05-27	1938-09-23
1939	1939-05-15	1939-09-22
1940	1940-05-22	1940-09-12
1941	1941-05-24	1941-08-22
1942	1942-06-30	1942-09-26
1943	1943-07-19	1943-09-26
1944	1944-06-30	1944-09-12
1945	1945-06-25	1945-09-02
1946	1946-07-19	1946-08-24
1947	1947-05-25	1947-08-03
1948	1948-06-06	1948-09-11
1949	1949-06-06	1949-09-28
1950	1950-06-29	1950-09-03
1951	1951-06-29	1951-09-19
1952	1952-07-09	1952-09-25
1953	1953-07-07	1953-09-12
1954	1954-08-02	1954-08-02
1955	1955-06-11	1955-09-07
1956	1956-07-09	1956-08-23
1957	1957-06-06	1957-09-25
1958	1958-05-23	1958-09-08
1959	1959-07-12	1959-08-01
1960	1960-07-06	1960-08-11
1961	1961-06-15	1961-08-24
1962	1962-07-22	1962-09-06
1963	1963-06-15	1963-09-29
1964	1964-07-08	1964-08-22
1965	1965-07-07	1965-08-19
1966	1966-05-05	1966-09-23
1967	1967-06-19	1967-09-21
1968	1968-06-26	1968-09-01
1969	1969-06-04	1969-09-11
1970	1970-06-03	1970-08-31
1973	1973-05-15	1973-09-11
1974	1974-06-14	1974-09-25
1975	1975-06-02	1975-09-15
1976	1976-06-29	1976-09-01

Every Fixed Threshold

Fixed thresholds at Lake Kachess
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	65	36	1958	6
35 C (95 F): Days	41	7	1939	4
40 C (104 F): Days	1	1	1939	1
90 F (32.2 C): Days	62	20	1958	7
100 F (37.8 C): Days	6	3	1941	1
0 C (32 F): Ice days (max	64	61	1916	17
0 C (32 F): Frost days (min	64	210	1955	179
-10 C (14 F): Days with min	64	53	1922	8
-20 C (-4 F): Days with min	32	18	1950	7
-30 C (-22 F): Days with min	2	8	1950	8
10 mm (0.39 in): Days with 10 mm or more rain	65	69	1933	34
25 mm (0.98 in): Days with 25 mm or more rain	65	21	1932	8
50 mm (1.97 in): Days with 50 mm or more rain	49	8	1933	1
100 mm (3.94 in): Days with 100 mm or more rain	6	1	1923	1
10 cm (3.9 in): Days with 10 cm or more snowfall	48	36	1948	5
25 cm (9.8 in): Days with 25 cm or more snowfall	44	10	1910	2
50 cm (19.7 in): Days with 50 cm or more snowfall	13	2	1911	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1910.

Download the Data

Data for Lake Kachess 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).

Lake Kachess Threshold Days by Year (USC00454406)

Key Facts for Lake Kachess Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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