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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Mt Trumbull Threshold Days by Year (USC00025744)

13 fixed thresholds counted per year at Mt Trumbull (USC00025744): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mt Trumbull Thresholds

  • Mt Trumbull: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1941 with 16.
  • Mt Trumbull: days with 25 mm (0.98 in) or more of precipitation in 35 years, most in 1921 with 4.
  • Mt Trumbull: days with 10 cm (3.9 in) or more of snowfall in 23 years, most in 1932 with 4.
  • Mt Trumbull: days with 50 mm (1.97 in) or more of precipitation in 4 years, most in 1939 with 1.
  • 13 fixed thresholds have at least one qualifying day at Mt Trumbull.
46 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Mt Trumbull Days per year at Mt Trumbull with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 16 in 1941. 051015201920: 111921: 141926: 111927: 151928: 101929: 41930: 101931: 131932: 131933: 101934: 71935: 111936: 151937: 51938: 121939: 151940: 101941: 161942: 51943: 141944: 61945: 111946: 151947: 61948: 71949: 111950: 41951: 81953: 91954: 111955: 91956: 51959: 61960: 41961: 101962: 91963: 91964: 51966: 111967: 91970: 81971: 131972: 91974: 81976: 91977: 91920192919341939194419491955196219701977
Days per year at Mt Trumbull with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 16 in 1941.
Days with 10 mm (0.39 in) or more of precipitation per year at Mt Trumbull
YearDaysDecade average
19201110.8
19211410.8
19261110.8
19271510.8
19281010.8
1929410.8
19301011.1
19311311.1
19321311.1
19331011.1
1934711.1
19351111.1
19361511.1
1937511.1
19381211.1
19391511.1
19401010.1
19411610.1
1942510.1
19431410.1
1944610.1
19451110.1
19461510.1
1947610.1
1948710.1
19491110.1
195047.4
195187.4
195397.4
1954117.4
195597.4
195657.4
195967.4
196048.1
1961108.1
196298.1
196398.1
196458.1
1966118.1
196798.1
197089.3
1971139.3
197299.3
197489.3
197699.3
197799.3
First to last qualifying date each year at Mt Trumbull For each year, a bar from the first to the last day at Mt Trumbull meeting 10 mm (0.39 in). 1920: 4 January 1920 to 31 October 19201921: 6 May 1921 to 25 December 19211926: 13 February 1926 to 8 December 19261927: 21 January 1927 to 11 December 19271928: 16 January 1928 to 8 November 19281929: 20 January 1929 to 17 August 19291930: 15 March 1930 to 9 October 19301931: 3 January 1931 to 10 December 19311932: 8 February 1932 to 14 December 19321933: 17 January 1933 to 13 December 19331934: 23 February 1934 to 13 December 19341935: 6 February 1935 to 25 November 19351936: 13 February 1936 to 29 December 19361937: 13 March 1937 to 22 August 19371938: 19 January 1938 to 22 December 19381939: 6 January 1939 to 28 November 19391940: 8 January 1940 to 24 December 19401941: 1 March 1941 to 12 November 19411942: 23 April 1942 to 25 December 19421943: 23 February 1943 to 6 December 19431944: 24 January 1944 to 12 November 19441945: 15 February 1945 to 4 October 19451946: 13 March 1946 to 6 December 19461947: 6 July 1947 to 8 December 19471948: 5 February 1948 to 27 December 19481949: 13 January 1949 to 19 December 19491950: 1 March 1950 to 12 August 19501951: 2 March 1951 to 30 December 19511953: 14 January 1953 to 22 October 19531954: 25 January 1954 to 10 December 19541955: 13 June 1955 to 17 November 19551956: 27 January 1956 to 29 July 19561959: 8 February 1959 to 25 December 19591960: 29 February 1960 to 6 November 19601961: 27 January 1961 to 17 September 19611962: 20 January 1962 to 18 December 19621963: 11 February 1963 to 7 November 19631964: 24 March 1964 to 4 August 19641966: 11 May 1966 to 7 December 19661967: 11 April 1967 to 30 November 19671970: 1 March 1970 to 29 November 19701971: 3 January 1971 to 25 October 19711972: 15 July 1972 to 5 December 19721974: 6 January 1974 to 28 October 19741976: 9 February 1976 to 26 September 19761977: 26 March 1977 to 27 December 197719201930193619421948195519631972JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mt Trumbull meeting 10 mm (0.39 in).
First to last qualifying date each year at Mt Trumbull
YearFirst dateLast date
19201920-01-041920-10-31
19211921-05-061921-12-25
19261926-02-131926-12-08
19271927-01-211927-12-11
19281928-01-161928-11-08
19291929-01-201929-08-17
19301930-03-151930-10-09
19311931-01-031931-12-10
19321932-02-081932-12-14
19331933-01-171933-12-13
19341934-02-231934-12-13
19351935-02-061935-11-25
19361936-02-131936-12-29
19371937-03-131937-08-22
19381938-01-191938-12-22
19391939-01-061939-11-28
19401940-01-081940-12-24
19411941-03-011941-11-12
19421942-04-231942-12-25
19431943-02-231943-12-06
19441944-01-241944-11-12
19451945-02-151945-10-04
19461946-03-131946-12-06
19471947-07-061947-12-08
19481948-02-051948-12-27
19491949-01-131949-12-19
19501950-03-011950-08-12
19511951-03-021951-12-30
19531953-01-141953-10-22
19541954-01-251954-12-10
19551955-06-131955-11-17
19561956-01-271956-07-29
19591959-02-081959-12-25
19601960-02-291960-11-06
19611961-01-271961-09-17
19621962-01-201962-12-18
19631963-02-111963-11-07
19641964-03-241964-08-04
19661966-05-111966-12-07
19671967-04-111967-11-30
19701970-03-011970-11-29
19711971-01-031971-10-25
19721972-07-151972-12-05
19741974-01-061974-10-28
19761976-02-091976-09-26
19771977-03-261977-12-27

Every Fixed Threshold

Fixed thresholds at Mt Trumbull
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days270192064
35 C (95 F): Days211192010
90 F (32.2 C): Days239192139
0 C (32 F): Ice days (max1219202
0 C (32 F): Frost days (min11151921115
-10 C (14 F): Days with min1419214
20 C (68 F): Tropical nights (min1319213
10 mm (0.39 in): Days with 10 mm or more rain461619419
25 mm (0.98 in): Days with 25 mm or more rain35419211
50 mm (1.97 in): Days with 50 mm or more rain4119391
100 mm (3.94 in): Days with 100 mm or more rain1119551
10 cm (3.9 in): Days with 10 cm or more snowfall23419321
25 cm (9.8 in): Days with 25 cm or more snowfall1119481

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1920.

Download the Data

  • Data for Mt Trumbull 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).