Lost River Threshold Days by Year (CA004074640)

17 fixed thresholds counted per year at Lost River (CA004074640): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lost River Thresholds

Lost River: days with a maximum temperature at or below 0 C (32 F) in 71 years, most in 1972 with 152.
Lost River: nights with a minimum temperature at or below 0 C (32 F) in 71 years, most in 1918 with 236.
Lost River: nights with a minimum temperature at or below -10 C (14 F) in 71 years, most in 1935 with 156.
Lost River: nights with a minimum temperature at or below -20 C (-4 F) in 71 years, most in 1955 with 102.
17 fixed thresholds have at least one qualifying day at Lost River.

Days at or above 30 C (86 F)

69 years with a qualifying day

Days per year at Lost River with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 29 in 1941.

Days at or above 30 C (86 F) per year at Lost River
Year	Days	Decade average
1912	4	4.5
1914	6	4.5
1915	2	4.5
1917	3	4.5
1918	2	4.5
1919	10	4.5
1920	13	7.4
1922	7	7.4
1923	7	7.4
1924	3	7.4
1925	5	7.4
1926	10	7.4
1927	5	7.4
1928	6	7.4
1929	11	7.4
1930	8	14.6
1931	12	14.6
1932	5	14.6
1933	11	14.6
1934	9	14.6
1935	12	14.6
1936	25	14.6
1937	28	14.6
1938	20	14.6
1939	16	14.6
1940	21	16.7
1941	29	16.7
1942	6	16.7
1943	17	16.7
1944	8	16.7
1945	11	16.7
1946	16	16.7
1947	28	16.7
1948	20	16.7
1949	11	16.7
1950	12	6.4
1951	5	6.4
1952	3	6.4
1953	11	6.4
1954	1	6.4
1955	12	6.4
1956	4	6.4
1957	2	6.4
1958	9	6.4
1959	5	6.4
1960	8	10.3
1961	29	10.3
1962	7	10.3
1963	11	10.3
1964	9	10.3
1965	5	10.3
1966	7	10.3
1967	16	10.3
1968	2	10.3
1969	9	10.3
1970	9	6.9
1971	8	6.9
1972	9	6.9
1973	4	6.9
1974	7	6.9
1975	8	6.9
1976	3	6.9
1977	3	6.9
1978	5	6.9
1979	13	6.9
1980	14	9.5
1981	8	9.5
1982	5	9.5
1983	11	9.5

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

First to last qualifying date each year at Lost River
Year	First date	Last date
1912	1912-06-23	1912-06-30
1914	1914-07-04	1914-08-03
1915	1915-08-09	1915-08-10
1917	1917-07-18	1917-09-24
1918	1918-06-11	1918-07-19
1919	1919-05-23	1919-08-19
1920	1920-07-11	1920-08-29
1922	1922-06-04	1922-09-28
1923	1923-05-27	1923-07-26
1924	1924-07-04	1924-07-11
1925	1925-07-13	1925-08-04
1926	1926-06-28	1926-08-25
1927	1927-07-24	1927-09-07
1928	1928-05-23	1928-08-12
1929	1929-06-10	1929-08-30
1930	1930-06-08	1930-08-26
1931	1931-05-14	1931-09-07
1932	1932-06-01	1932-08-20
1933	1933-06-05	1933-08-30
1934	1934-05-26	1934-10-13
1935	1935-06-29	1935-08-24
1936	1936-05-26	1936-08-12
1937	1937-06-13	1937-09-20
1938	1938-05-26	1938-09-20
1939	1939-04-28	1939-08-23
1940	1940-05-11	1940-09-18
1941	1941-06-17	1941-08-13
1942	1942-06-08	1942-09-06
1943	1943-05-21	1943-10-05
1944	1944-05-27	1944-07-24
1945	1945-06-21	1945-08-18
1946	1946-04-30	1946-09-15
1947	1947-06-13	1947-08-04
1948	1948-05-21	1948-09-22
1949	1949-04-28	1949-08-18
1950	1950-05-27	1950-09-25
1951	1951-05-22	1951-08-22
1952	1952-04-28	1952-08-23
1953	1953-05-06	1953-08-20
1954	1954-07-20	1954-07-20
1955	1955-05-19	1955-09-02
1956	1956-06-01	1956-06-11
1957	1957-07-26	1957-07-29
1958	1958-05-12	1958-08-17
1959	1959-05-16	1959-07-25
1960	1960-05-12	1960-09-04
1961	1961-05-20	1961-08-31
1962	1962-06-09	1962-08-13
1963	1963-07-05	1963-08-20
1964	1964-05-20	1964-07-22
1965	1965-06-10	1965-08-12
1966	1966-07-16	1966-09-06
1967	1967-06-26	1967-09-06
1968	1968-07-05	1968-09-12
1969	1969-05-25	1969-09-13
1970	1970-06-02	1970-08-08
1971	1971-05-12	1971-09-11
1972	1972-06-06	1972-08-29
1973	1973-06-23	1973-08-14
1974	1974-06-23	1974-08-06
1975	1975-06-25	1975-07-29
1976	1976-08-22	1976-09-17
1977	1977-04-26	1977-07-22
1978	1978-05-22	1978-08-10
1979	1979-06-28	1979-09-15
1980	1980-05-03	1980-09-07
1981	1981-05-21	1981-09-17
1982	1982-05-25	1982-09-08
1983	1983-07-06	1983-09-01

Every Fixed Threshold

Fixed thresholds at Lost River
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	69	29	1941	11
35 C (95 F): Days	20	9	1947	1
40 C (104 F): Days	2	1	1940	1
90 F (32.2 C): Days	58	18	1947	2
100 F (37.8 C): Days	6	3	1947	3
0 C (32 F): Ice days (max	71	152	1972	137
0 C (32 F): Frost days (min	71	236	1918	214
-10 C (14 F): Days with min	71	156	1935	126
-20 C (-4 F): Days with min	71	102	1955	65
-30 C (-22 F): Days with min	71	52	1936	27
-40 C (-40 F): Days with min	58	18	1950	2
20 C (68 F): Tropical nights (min	6	1	1929	1
10 mm (0.39 in): Days with 10 mm or more rain	53	22	1978	11
25 mm (0.98 in): Days with 25 mm or more rain	39	9	1973	2
50 mm (1.97 in): Days with 50 mm or more rain	2	2	1927	1
10 cm (3.9 in): Days with 10 cm or more snowfall	46	8	1945	3
25 cm (9.8 in): Days with 25 cm or more snowfall	7	1	1953	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1912.

Download the Data

Data for Lost River 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).

Lost River Threshold Days by Year (CA004074640)

Key Facts for Lost River Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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