Yosemite Park HQ Threshold Days by Year (USC00049855)

17 fixed thresholds counted per year at Yosemite Park HQ (USC00049855): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Yosemite Park HQ Thresholds

Yosemite Park HQ: days with a maximum temperature at or above 30 C (86 F) in 91 years, most in 1966 with 112.
Yosemite Park HQ: days with a maximum temperature at or above 90 F (32.2 C) in 91 years, most in 1914 with 82.
Yosemite Park HQ: days with a maximum temperature at or above 35 C (95 F) in 88 years, most in 1914 with 43.
Yosemite Park HQ: days with 10 mm (0.39 in) or more of precipitation in 83 years, most in 1983 with 46.
17 fixed thresholds have at least one qualifying day at Yosemite Park HQ.

Days at or above 30 C (86 F)

91 years with a qualifying day

Days per year at Yosemite Park HQ with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 112 in 1966.

Days at or above 30 C (86 F) per year at Yosemite Park HQ
Year	Days	Decade average
1907	65	69
1908	73	69
1911	87	78.3
1912	85	78.3
1913	94	78.3
1914	93	78.3
1917	86	78.3
1918	62	78.3
1919	41	78.3
1920	33	63.8
1921	74	63.8
1922	47	63.8
1923	21	63.8
1924	78	63.8
1925	45	63.8
1926	90	63.8
1927	75	63.8
1928	90	63.8
1929	85	63.8
1930	72	70.6
1931	77	70.6
1932	69	70.6
1933	72	70.6
1934	88	70.6
1935	64	70.6
1936	71	70.6
1937	65	70.6
1938	54	70.6
1939	74	70.6
1940	73	74.6
1941	43	74.6
1942	67	74.6
1943	85	74.6
1944	74	74.6
1945	81	74.6
1946	77	74.6
1947	93	74.6
1948	73	74.6
1949	80	74.6
1950	81	72.3
1951	88	72.3
1952	72	72.3
1953	64	72.3
1954	62	72.3
1955	70	72.3
1956	60	72.3
1957	74	72.3
1958	68	72.3
1959	84	72.3
1960	98	84.4
1961	78	84.4
1962	60	84.4
1963	70	84.4
1964	80	84.4
1965	78	84.4
1966	112	84.4
1967	98	84.4
1969	86	84.4
1971	97	95.1
1972	90	95.1
1973	104	95.1
1974	112	95.1
1975	94	95.1
1976	98	95.1
1979	71	95.1
1982	52	66.5
1983	47	66.5
1984	89	66.5
1985	72	66.5
1986	57	66.5
1987	72	66.5
1988	76	66.5
1989	67	66.5
1990	65	62.7
1991	76	62.7
1992	48	62.7
1993	58	62.7
1995	55	62.7
1996	78	62.7
1997	63	62.7
1998	50	62.7
1999	71	62.7
2000	79	84.5
2001	90	84.5
2002	83	84.5
2003	86	84.5
2011	52	77.8
2012	90	77.8
2015	93	77.8
2017	76	77.8
2026	66	66

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

First to last qualifying date each year at Yosemite Park HQ
Year	First date	Last date
1907	1907-06-01	1907-09-23
1908	1908-05-27	1908-09-22
1911	1911-06-10	1911-10-18
1912	1912-05-13	1912-10-14
1913	1913-05-22	1913-10-27
1914	1914-05-29	1914-10-15
1917	1917-06-08	1917-10-13
1918	1918-05-02	1918-09-19
1919	1919-06-19	1919-09-27
1920	1920-07-05	1920-09-29
1921	1921-06-06	1921-10-19
1922	1922-06-23	1922-09-22
1923	1923-06-28	1923-09-08
1924	1924-05-17	1924-10-01
1925	1925-06-22	1925-08-26
1926	1926-04-24	1926-10-18
1927	1927-05-13	1927-10-20
1928	1928-05-23	1928-10-09
1929	1929-05-23	1929-09-18
1930	1930-06-05	1930-09-16
1931	1931-04-20	1931-09-13
1932	1932-06-12	1932-09-16
1933	1933-05-28	1933-10-05
1934	1934-04-10	1934-09-21
1935	1935-06-04	1935-09-19
1936	1936-05-24	1936-09-27
1937	1937-06-20	1937-09-19
1938	1938-06-23	1938-09-14
1939	1939-05-28	1939-09-17
1940	1940-05-09	1940-08-30
1941	1941-06-30	1941-09-07
1942	1942-06-22	1942-10-05
1943	1943-05-24	1943-10-15
1944	1944-06-28	1944-09-28
1945	1945-06-17	1945-10-03
1946	1946-06-03	1946-09-29
1947	1947-05-01	1947-10-04
1948	1948-06-23	1948-10-01
1949	1949-05-25	1949-10-04
1950	1950-05-29	1950-10-12
1951	1951-05-25	1951-10-09
1952	1952-06-16	1952-10-05
1953	1953-06-22	1953-10-07
1954	1954-04-21	1954-10-15
1955	1955-05-20	1955-09-13
1956	1956-06-12	1956-09-26
1957	1957-06-03	1957-09-25
1958	1958-06-22	1958-10-02
1959	1959-06-03	1959-10-23
1960	1960-04-04	1960-09-27
1961	1961-06-13	1961-10-16
1962	1962-06-08	1962-10-01
1963	1963-06-16	1963-10-03
1964	1964-06-22	1964-10-11
1965	1965-06-24	1965-10-30
1966	1966-03-29	1966-11-01
1967	1967-05-16	1967-10-21
1969	1969-05-30	1969-10-01
1971	1971-06-15	1971-10-15
1972	1972-05-13	1972-10-07
1973	1973-05-11	1973-10-18
1974	1974-05-09	1974-10-20
1975	1975-05-13	1975-10-06
1976	1976-05-02	1976-11-06
1979	1979-05-26	1979-09-25
1982	1982-06-17	1982-09-23
1983	1983-05-24	1983-09-21
1984	1984-05-28	1984-09-29
1985	1985-06-07	1985-10-04
1986	1986-06-23	1986-09-09
1987	1987-06-03	1987-10-07
1988	1988-06-14	1988-10-04
1989	1989-06-14	1989-09-26
1990	1990-06-09	1990-09-14
1991	1991-07-01	1991-10-15
1992	1992-05-31	1992-10-11
1993	1993-06-19	1993-10-04
1995	1995-06-24	1995-09-21
1996	1996-06-02	1996-10-09
1997	1997-05-30	1997-10-01
1998	1998-07-12	1998-09-16
1999	1999-06-15	1999-10-14
2000	2000-06-04	2000-10-02
2001	2001-05-10	2001-10-04
2002	2002-05-31	2002-09-26
2003	2003-05-29	2003-10-22
2011	2011-06-22	2011-10-01
2012	2012-06-01	2012-10-04
2015	2015-05-31	2015-10-14
2017	2017-06-03	2017-09-13
2026	2026-05-11	2026-08-31

Every Fixed Threshold

Fixed thresholds at Yosemite Park HQ
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	91	112	1966	66
35 C (95 F): Days	88	43	1914	12
40 C (104 F): Days	7	5	1914	1
90 F (32.2 C): Days	91	82	1914	41
100 F (37.8 C): Days	40	18	1914	6
0 C (32 F): Ice days (max	50	17	1937	2
0 C (32 F): Frost days (min	82	258	1913	34
-10 C (14 F): Days with min	56	29	1913	2
-20 C (-4 F): Days with min	2	1	1924	1
20 C (68 F): Tropical nights (min	13	30	1917	1
10 mm (0.39 in): Days with 10 mm or more rain	83	46	1983	15
25 mm (0.98 in): Days with 25 mm or more rain	83	23	1996	6
50 mm (1.97 in): Days with 50 mm or more rain	76	11	1996	1
100 mm (3.94 in): Days with 100 mm or more rain	12	3	1950	1
10 cm (3.9 in): Days with 10 cm or more snowfall	48	16	1948	4
25 cm (9.8 in): Days with 25 cm or more snowfall	29	10	1993	1
50 cm (19.7 in): Days with 50 cm or more snowfall	6	3	1993	3

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

Download the Data

Data for Yosemite Park HQ 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Yosemite Park HQ Threshold Days by Year (USC00049855)

Key Facts for Yosemite Park HQ Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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