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Built 2026-10-19 (19 October 2026)

Alhambra Threshold Days by Year (USC00020104)

13 fixed thresholds counted per year at Alhambra (USC00020104): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alhambra Thresholds

  • Alhambra: days with 10 mm (0.39 in) or more of precipitation in 30 years, most in 1955 with 11.
  • Alhambra: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 1950 with 225.
  • Alhambra: days with a maximum temperature at or above 35 C (95 F) in 29 years, most in 1952 with 160.
  • Alhambra: days with a maximum temperature at or above 40 C (104 F) in 29 years, most in 1958 with 90.
  • 13 fixed thresholds have at least one qualifying day at Alhambra.
29 years with a qualifying day
Days at or above 30 C (86 F) per year at Alhambra Days per year at Alhambra with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 225 in 1950. 01002003001946: 1791947: 1891948: 1931949: 2001950: 2251951: 1891952: 2001953: 1781955: 1911956: 2041957: 1701958: 1891959: 1991960: 1971961: 1981962: 2121963: 2051964: 1791965: 1841966: 2081967: 2031968: 1931969: 1811970: 1691971: 1811972: 2081973: 1921974: 1931975: 1751946194919521956195919621965196819711974
Days per year at Alhambra with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 225 in 1950.
Days at or above 30 C (86 F) per year at Alhambra
YearDaysDecade average
1946179190.3
1947189190.3
1948193190.3
1949200190.3
1950225193.9
1951189193.9
1952200193.9
1953178193.9
1955191193.9
1956204193.9
1957170193.9
1958189193.9
1959199193.9
1960197196
1961198196
1962212196
1963205196
1964179196
1965184196
1966208196
1967203196
1968193196
1969181196
1970169186.3
1971181186.3
1972208186.3
1973192186.3
1974193186.3
1975175186.3
First to last qualifying date each year at Alhambra For each year, a bar from the first to the last day at Alhambra meeting 30 C (86 F). 1946: 9 March 1946 to 25 October 19461947: 14 February 1947 to 1 November 19471948: 18 February 1948 to 27 October 19481949: 18 March 1949 to 18 November 19491950: 20 March 1950 to 10 December 19501951: 10 February 1951 to 29 October 19511952: 30 March 1952 to 6 November 19521953: 24 March 1953 to 29 November 19531955: 7 March 1955 to 28 November 19551956: 1 March 1956 to 15 December 19561957: 12 February 1957 to 10 October 19571958: 15 April 1958 to 9 November 19581959: 1 April 1959 to 28 October 19591960: 6 March 1960 to 3 November 19601961: 10 March 1961 to 27 October 19611962: 26 March 1962 to 12 November 19621963: 3 February 1963 to 12 November 19631964: 28 March 1964 to 29 October 19641965: 30 March 1965 to 7 November 19651966: 12 March 1966 to 14 November 19661967: 1 March 1967 to 18 November 19671968: 25 February 1968 to 31 October 19681969: 21 March 1969 to 28 October 19691970: 5 April 1970 to 31 October 19701971: 19 January 1971 to 11 November 19711972: 19 February 1972 to 16 October 19721973: 10 April 1973 to 12 November 19731974: 15 March 1974 to 25 October 19741975: 1 March 1975 to 7 November 197519461950195519591963196719711975JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Alhambra meeting 30 C (86 F).
First to last qualifying date each year at Alhambra
YearFirst dateLast date
19461946-03-091946-10-25
19471947-02-141947-11-01
19481948-02-181948-10-27
19491949-03-181949-11-18
19501950-03-201950-12-10
19511951-02-101951-10-29
19521952-03-301952-11-06
19531953-03-241953-11-29
19551955-03-071955-11-28
19561956-03-011956-12-15
19571957-02-121957-10-10
19581958-04-151958-11-09
19591959-04-011959-10-28
19601960-03-061960-11-03
19611961-03-101961-10-27
19621962-03-261962-11-12
19631963-02-031963-11-12
19641964-03-281964-10-29
19651965-03-301965-11-07
19661966-03-121966-11-14
19671967-03-011967-11-18
19681968-02-251968-10-31
19691969-03-211969-10-28
19701970-04-051970-10-31
19711971-01-191971-11-11
19721972-02-191972-10-16
19731973-04-101973-11-12
19741974-03-151974-10-25
19751975-03-011975-11-07

Every Fixed Threshold

Fixed thresholds at Alhambra
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days292251950175
35 C (95 F): Days291601952127
40 C (104 F): Days2990195847
45 C (113 F): Days20619471
90 F (32.2 C): Days291931950154
100 F (37.8 C): Days29124196093
110 F (43.3 C): Days292519624
0 C (32 F): Frost days (min2967194827
20 C (68 F): Tropical nights (min2997196673
25 C (77 F): Days with min2947196925
10 mm (0.39 in): Days with 10 mm or more rain301119553
25 mm (0.98 in): Days with 25 mm or more rain17519551
50 mm (1.97 in): Days with 50 mm or more rain3119631

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1946.

Download the Data

  • Data for Alhambra 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 . Last revised (2025-12-31).