Yuma Valley Threshold Days by Year

15 fixed thresholds counted per year at Yuma Valley (USC00029657): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Yuma Valley Thresholds

Yuma Valley: days with a maximum temperature at or above 30 C (86 F) in 53 years, most in 1934 with 225.
Yuma Valley: days with a maximum temperature at or above 35 C (95 F) in 53 years, most in 1952 with 173.
Yuma Valley: days with a maximum temperature at or above 40 C (104 F) in 53 years, most in 1958 with 101.
Yuma Valley: days with a maximum temperature at or above 90 F (32.2 C) in 53 years, most in 1934 with 198.
15 fixed thresholds have at least one qualifying day at Yuma Valley.

Days at or above 30 C (86 F)

53 years with a qualifying day

Days per year at Yuma Valley with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 225 in 1934.

Days at or above 30 C (86 F) per year at Yuma Valley
Year	Days	Decade average
1931	202	195.4
1932	184	195.4
1933	184	195.4
1934	225	195.4
1936	210	195.4
1937	178	195.4
1938	179	195.4
1939	201	195.4
1940	193	190.6
1941	175	190.6
1942	187	190.6
1943	197	190.6
1945	194	190.6
1946	195	190.6
1947	199	190.6
1948	185	190.6
1949	190	190.6
1950	223	200
1951	195	200
1952	211	200
1953	199	200
1958	194	200
1959	178	200
1960	175	198.3
1961	167	198.3
1962	214	198.3
1963	211	198.3
1964	196	198.3
1965	199	198.3
1966	221	198.3
1967	195	198.3
1968	211	198.3
1969	194	198.3
1970	189	192.2
1971	174	192.2
1972	207	192.2
1973	196	192.2
1974	197	192.2
1975	177	192.2
1976	191	192.2
1977	203	192.2
1978	196	192.2
1979	192	192.2
1980	184	197
1981	207	197
1982	185	197
1983	192	197
1984	188	197
1985	197	197
1986	204	197
1987	199	197
1989	217	197
1990	190	190

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

First to last qualifying date each year at Yuma Valley
Year	First date	Last date
1931	1931-03-18	1931-11-07
1932	1932-03-19	1932-11-21
1933	1933-03-08	1933-11-28
1934	1934-02-06	1934-11-15
1936	1936-03-02	1936-11-19
1937	1937-03-03	1937-11-05
1938	1938-04-04	1938-10-31
1939	1939-03-16	1939-11-08
1940	1940-03-21	1940-11-03
1941	1941-04-24	1941-11-12
1942	1942-03-30	1942-11-15
1943	1943-03-27	1943-11-20
1945	1945-03-13	1945-11-06
1946	1946-02-24	1946-10-27
1947	1947-02-16	1947-11-02
1948	1948-02-23	1948-11-04
1949	1949-03-19	1949-11-25
1950	1950-03-05	1950-11-27
1951	1951-02-10	1951-11-10
1952	1952-03-27	1952-11-07
1953	1953-02-08	1953-11-30
1958	1958-04-12	1958-12-13
1959	1959-03-03	1959-11-26
1960	1960-03-06	1960-11-02
1961	1961-03-10	1961-10-28
1962	1962-01-08	1962-11-13
1963	1963-02-04	1963-11-13
1964	1964-03-19	1964-11-06
1965	1965-02-21	1965-11-10
1966	1966-03-08	1966-11-21
1967	1967-03-02	1967-11-19
1968	1968-02-20	1968-11-23
1969	1969-03-19	1969-11-05
1970	1970-03-15	1970-11-06
1971	1971-01-20	1971-11-12
1972	1972-02-28	1972-10-25
1973	1973-04-07	1973-11-13
1974	1974-03-15	1974-11-14
1975	1975-03-01	1975-11-09
1976	1976-03-19	1976-11-11
1977	1977-02-16	1977-11-27
1978	1978-03-17	1978-11-10
1979	1979-03-08	1979-10-29
1980	1980-02-28	1980-11-12
1981	1981-02-17	1981-11-17
1982	1982-02-18	1982-10-26
1983	1983-03-11	1983-11-07
1984	1984-03-10	1984-11-06
1985	1985-03-10	1985-11-09
1986	1986-02-25	1986-11-01
1987	1987-03-04	1987-10-29
1989	1989-02-24	1989-11-14
1990	1990-02-27	1990-11-19

Every Fixed Threshold

Fixed thresholds at Yuma Valley
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	53	225	1934	190
35 C (95 F): Days	53	173	1952	122
40 C (104 F): Days	53	101	1958	63
45 C (113 F): Days	43	12	1985	4
90 F (32.2 C): Days	53	198	1934	167
100 F (37.8 C): Days	53	140	1952	87
110 F (43.3 C): Days	53	31	1948	20
0 C (32 F): Frost days (min	51	49	1964	11
-10 C (14 F): Days with min	1	1	1937	1
20 C (68 F): Tropical nights (min	52	98	1984	78
25 C (77 F): Days with min	52	53	1969	24
10 mm (0.39 in): Days with 10 mm or more rain	45	6	1984	3
25 mm (0.98 in): Days with 25 mm or more rain	19	2	1939	1
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1977	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1977	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1931.

Download the Data

Data for Yuma Valley 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Yuma Valley Threshold Days by Year

Key Facts for Yuma Valley Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related