Whitney Dam Threshold Days by Year (USC00419715)

18 fixed thresholds counted per year at Whitney Dam (USC00419715): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Whitney Dam Thresholds

Whitney Dam: days with 10 mm (0.39 in) or more of precipitation in 69 years, most in 1973 with 36.
Whitney Dam: days with 25 mm (0.98 in) or more of precipitation in 69 years, most in 2004 with 19.
Whitney Dam: days with a maximum temperature at or above 30 C (86 F) in 61 years, most in 1963 with 177.
Whitney Dam: days with a maximum temperature at or above 35 C (95 F) in 61 years, most in 2011 with 116.
18 fixed thresholds have at least one qualifying day at Whitney Dam.

Days at or above 30 C (86 F)

61 years with a qualifying day

Days per year at Whitney Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 177 in 1963.

Days at or above 30 C (86 F) per year at Whitney Dam
Year	Days	Decade average
1950	147	145.5
1951	153	145.5
1952	156	145.5
1953	139	145.5
1954	153	145.5
1955	165	145.5
1956	168	145.5
1957	118	145.5
1958	123	145.5
1959	133	145.5
1960	144	136.3
1961	124	136.3
1962	152	136.3
1963	177	136.3
1964	123	136.3
1965	129	136.3
1966	120	136.3
1967	145	136.3
1968	117	136.3
1969	132	136.3
1970	121	130.6
1971	129	130.6
1972	155	130.6
1973	125	130.6
1974	128	130.6
1975	126	130.6
1976	110	130.6
1977	144	130.6
1978	151	130.6
1979	117	130.6
1980	142	134.9
1981	128	134.9
1982	141	134.9
1983	127	134.9
1984	141	134.9
1985	127	134.9
1986	132	134.9
1987	133	134.9
1988	143	134.9
1989	135	134.9
1990	138	141.1
1991	137	141.1
1992	129	141.1
1993	133	141.1
1994	142	141.1
1995	140	141.1
1996	151	141.1
1997	132	141.1
1998	151	141.1
1999	158	141.1
2000	144	142
2001	133	142
2002	155	142
2003	140	142
2004	145	142
2005	158	142
2007	143	142
2009	118	142
2010	134	149.7
2011	164	149.7
2012	151	149.7

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

First to last qualifying date each year at Whitney Dam
Year	First date	Last date
1950	1950-03-01	1950-11-20
1951	1951-01-19	1951-12-31
1952	1952-01-20	1952-11-03
1953	1953-04-09	1953-10-17
1954	1954-02-11	1954-10-27
1955	1955-03-11	1955-12-25
1956	1956-03-27	1956-10-23
1957	1957-02-10	1957-10-06
1958	1958-05-12	1958-10-21
1959	1959-02-18	1959-10-24
1960	1960-02-10	1960-10-15
1961	1961-04-15	1961-10-14
1962	1962-02-09	1962-11-11
1963	1963-02-02	1963-11-08
1964	1964-04-04	1964-10-18
1965	1965-04-13	1965-11-26
1966	1966-04-01	1966-10-15
1967	1967-03-04	1967-10-07
1968	1968-05-04	1968-11-01
1969	1969-01-09	1969-11-09
1970	1970-04-21	1970-10-08
1971	1971-03-12	1971-10-19
1972	1972-02-26	1972-10-19
1973	1973-05-10	1973-10-11
1974	1974-03-12	1974-10-11
1975	1975-04-25	1975-11-10
1976	1976-03-05	1976-10-12
1977	1977-05-22	1977-12-18
1978	1978-04-05	1978-10-23
1979	1979-04-26	1979-10-22
1980	1980-02-21	1980-11-10
1981	1981-04-21	1981-10-18
1982	1982-02-22	1982-10-31
1983	1983-03-01	1983-11-23
1984	1984-03-28	1984-10-19
1985	1985-03-12	1985-10-15
1986	1986-02-19	1986-10-05
1987	1987-04-12	1987-11-05
1988	1988-04-05	1988-11-10
1989	1989-03-12	1989-11-15
1990	1990-04-30	1990-10-18
1991	1991-03-06	1991-10-26
1992	1992-04-24	1992-10-27
1993	1993-03-10	1993-10-19
1994	1994-03-21	1994-10-23
1995	1995-03-23	1995-11-11
1996	1996-02-15	1996-10-22
1997	1997-03-22	1997-10-25
1998	1998-04-14	1998-10-17
1999	1999-04-09	1999-11-15
2000	2000-01-20	2000-10-16
2001	2001-04-09	2001-11-04
2002	2002-03-15	2002-11-11
2003	2003-04-16	2003-11-06
2004	2004-04-02	2004-10-30
2005	2005-02-22	2005-12-04
2007	2007-03-11	2007-11-15
2009	2009-02-27	2009-10-15
2010	2010-05-05	2010-12-22
2011	2011-03-19	2011-10-27
2012	2012-04-01	2012-11-03

Every Fixed Threshold

Fixed thresholds at Whitney Dam
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	61	177	1963	151
35 C (95 F): Days	61	116	2011	72
40 C (104 F): Days	41	46	2011	13
45 C (113 F): Days	1	1	2000	1
90 F (32.2 C): Days	61	140	2011	122
100 F (37.8 C): Days	61	85	2011	38
110 F (43.3 C): Days	4	4	2000	2
0 C (32 F): Ice days (max	42	10	1978	4
0 C (32 F): Frost days (min	55	70	1951	32
-10 C (14 F): Days with min	25	8	1963	1
20 C (68 F): Tropical nights (min	55	128	1998	113
25 C (77 F): Days with min	43	26	1954	7
10 mm (0.39 in): Days with 10 mm or more rain	69	36	1973	16
25 mm (0.98 in): Days with 25 mm or more rain	69	19	2004	6
50 mm (1.97 in): Days with 50 mm or more rain	60	7	1995	1
100 mm (3.94 in): Days with 100 mm or more rain	19	4	2007	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	2010	1
10 cm (3.9 in): Days with 10 cm or more snowfall	1	1	1964	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.

Download the Data

Data for Whitney Dam 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).

Whitney Dam Threshold Days by Year (USC00419715)

Key Facts for Whitney Dam Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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