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Built 2026-10-18 (18 October 2026)

Giant Forest Threshold Days by Year

15 fixed thresholds counted per year at Giant Forest (USC00043397): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Giant Forest Thresholds

  • Giant Forest: nights with a minimum temperature at or below 0 C (32 F) in 45 years, most in 1923 with 201.
  • Giant Forest: nights with a minimum temperature at or below -10 C (14 F) in 45 years, most in 1949 with 38.
  • Giant Forest: days with a maximum temperature at or below 0 C (32 F) in 43 years, most in 1952 with 39.
  • Giant Forest: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1940 with 43.
  • 15 fixed thresholds have at least one qualifying day at Giant Forest.
34 years with a qualifying day
Days at or above 30 C (86 F) per year at Giant Forest Days per year at Giant Forest with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 25 in 1931. 01020301924: 31925: 61926: 121928: 71929: 61930: 91931: 251932: 151933: 81934: 81935: 121936: 131937: 151938: 81939: 91940: 41941: 41942: 81943: 21945: 21946: 11947: 11950: 61954: 21955: 71958: 11959: 11960: 11961: 161962: 21964: 71965: 21966: 81967: 11192419291933193719411946195519611966
Days per year at Giant Forest with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 25 in 1931.
Days at or above 30 C (86 F) per year at Giant Forest
YearDaysDecade average
192436.8
192566.8
1926126.8
192876.8
192966.8
1930912.2
19312512.2
19321512.2
1933812.2
1934812.2
19351212.2
19361312.2
19371512.2
1938812.2
1939912.2
194043.1
194143.1
194283.1
194323.1
194523.1
194613.1
194713.1
195063.4
195423.4
195573.4
195813.4
195913.4
196016.7
1961166.7
196226.7
196476.7
196526.7
196686.7
1967116.7
First to last qualifying date each year at Giant Forest For each year, a bar from the first to the last day at Giant Forest meeting 30 C (86 F). 1924: 26 August 1924 to 28 August 19241925: 24 June 1925 to 26 July 19251926: 22 June 1926 to 24 August 19261928: 23 July 1928 to 21 September 19281929: 27 June 1929 to 16 September 19291930: 15 June 1930 to 19 August 19301931: 4 July 1931 to 1 November 19311932: 7 July 1932 to 15 September 19321933: 23 July 1933 to 14 August 19331934: 11 July 1934 to 3 September 19341935: 13 July 1935 to 17 September 19351936: 19 June 1936 to 24 September 19361937: 3 July 1937 to 16 September 19371938: 19 July 1938 to 4 August 19381939: 21 July 1939 to 18 August 19391940: 8 August 1940 to 30 August 19401941: 6 July 1941 to 22 July 19411942: 1 July 1942 to 17 August 19421943: 26 July 1943 to 27 July 19431945: 26 July 1945 to 27 July 19451946: 3 August 1946 to 3 August 19461947: 2 September 1947 to 2 September 19471950: 1 July 1950 to 2 September 19501954: 21 June 1954 to 23 June 19541955: 31 August 1955 to 6 September 19551958: 15 August 1958 to 15 August 19581959: 12 July 1959 to 12 July 19591960: 19 July 1960 to 19 July 19601961: 15 June 1961 to 19 July 19611962: 14 August 1962 to 15 August 19621964: 25 June 1964 to 8 August 19641965: 8 August 1965 to 11 August 19651966: 16 June 1966 to 9 August 19661967: 1 July 1967 to 30 August 19671924193019351940194619581964JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Giant Forest meeting 30 C (86 F).
First to last qualifying date each year at Giant Forest
YearFirst dateLast date
19241924-08-261924-08-28
19251925-06-241925-07-26
19261926-06-221926-08-24
19281928-07-231928-09-21
19291929-06-271929-09-16
19301930-06-151930-08-19
19311931-07-041931-11-01
19321932-07-071932-09-15
19331933-07-231933-08-14
19341934-07-111934-09-03
19351935-07-131935-09-17
19361936-06-191936-09-24
19371937-07-031937-09-16
19381938-07-191938-08-04
19391939-07-211939-08-18
19401940-08-081940-08-30
19411941-07-061941-07-22
19421942-07-011942-08-17
19431943-07-261943-07-27
19451945-07-261945-07-27
19461946-08-031946-08-03
19471947-09-021947-09-02
19501950-07-011950-09-02
19541954-06-211954-06-23
19551955-08-311955-09-06
19581958-08-151958-08-15
19591959-07-121959-07-12
19601960-07-191960-07-19
19611961-06-151961-07-19
19621962-08-141962-08-15
19641964-06-251964-08-08
19651965-08-081965-08-11
19661966-06-161966-08-09
19671967-07-011967-08-30

Every Fixed Threshold

Fixed thresholds at Giant Forest
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3425193111
90 F (32.2 C): Days17419341
0 C (32 F): Ice days (max4339195222
0 C (32 F): Frost days (min452011923159
-10 C (14 F): Days with min4538194915
-20 C (-4 F): Days with min2119371
20 C (68 F): Tropical nights (min115192615
10 mm (0.39 in): Days with 10 mm or more rain4343194041
25 mm (0.98 in): Days with 25 mm or more rain4325194023
50 mm (1.97 in): Days with 50 mm or more rain411519409
100 mm (3.94 in): Days with 100 mm or more rain26419433
200 mm (7.87 in): Days with 200 mm or more rain4119371
10 cm (3.9 in): Days with 10 cm or more snowfall3830193829
25 cm (9.8 in): Days with 25 cm or more snowfall3718195215
50 cm (19.7 in): Days with 50 cm or more snowfall23519241

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1924.

Download the Data

  • Data for Giant Forest 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

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