Built 2026-10-19 (19 October 2026)

Oakland Threshold Days by Year (USC00046332)

10 fixed thresholds counted per year at Oakland (USC00046332): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Oakland Thresholds

  • Oakland: days with a maximum temperature at or above 30 C (86 F) in 53 years, most in 1952 with 26.
  • Oakland: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1941 with 42.
  • Oakland: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 1926 with 11.
  • Oakland: days with a maximum temperature at or above 90 F (32.2 C) in 41 years, most in 1950 with 16.
  • 10 fixed thresholds have at least one qualifying day at Oakland.
53 years with a qualifying day
Days at or above 30 C (86 F) per year at Oakland Days per year at Oakland with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 26 in 1952. 01020301900: 41901: 41902: 11903: 51904: 71905: 31906: 21907: 11908: 11909: 51910: 21912: 31913: 61914: 31916: 41917: 161918: 31919: 31920: 11921: 111922: 21923: 51924: 51925: 31926: 21927: 21928: 31929: 81930: 21931: 101932: 21933: 51934: 71935: 81936: 41937: 71938: 11939: 151942: 61943: 161944: 81945: 131946: 151947: 161948: 61949: 171950: 241951: 121952: 261953: 261954: 211955: 231956: 20190019061913192019261932193819461952
Days per year at Oakland with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 26 in 1952.
Days at or above 30 C (86 F) per year at Oakland
YearDaysDecade average
190043.3
190143.3
190213.3
190353.3
190473.3
190533.3
190623.3
190713.3
190813.3
190953.3
191025
191235
191365
191435
191645
1917165
191835
191935
192014.2
1921114.2
192224.2
192354.2
192454.2
192534.2
192624.2
192724.2
192834.2
192984.2
193026.1
1931106.1
193226.1
193356.1
193476.1
193586.1
193646.1
193776.1
193816.1
1939156.1
1942612.1
19431612.1
1944812.1
19451312.1
19461512.1
19471612.1
1948612.1
19491712.1
19502421.7
19511221.7
19522621.7
19532621.7
19542121.7
19552321.7
19562021.7
First to last qualifying date each year at Oakland For each year, a bar from the first to the last day at Oakland meeting 30 C (86 F). 1900: 1 August 1900 to 22 September 19001901: 31 May 1901 to 12 October 19011902: 24 July 1902 to 24 July 19021903: 5 June 1903 to 9 September 19031904: 8 May 1904 to 29 September 19041905: 3 July 1905 to 7 July 19051906: 19 June 1906 to 1 July 19061907: 17 June 1907 to 17 June 19071908: 28 June 1908 to 28 June 19081909: 30 May 1909 to 15 September 19091910: 29 May 1910 to 30 May 19101912: 31 May 1912 to 3 June 19121913: 5 July 1913 to 1 October 19131914: 17 March 1914 to 10 September 19141916: 10 July 1916 to 27 September 19161917: 15 June 1917 to 3 October 19171918: 2 June 1918 to 29 August 19181919: 28 May 1919 to 19 September 19191920: 19 June 1920 to 19 June 19201921: 10 June 1921 to 28 September 19211922: 8 September 1922 to 9 September 19221923: 27 July 1923 to 17 September 19231924: 28 May 1924 to 11 September 19241925: 23 June 1925 to 26 June 19251926: 5 June 1926 to 15 July 19261927: 29 June 1927 to 30 June 19271928: 6 June 1928 to 21 September 19281929: 20 June 1929 to 4 July 19291930: 5 October 1930 to 6 October 19301931: 8 May 1931 to 24 August 19311932: 1 September 1932 to 9 September 19321933: 11 July 1933 to 17 October 19331934: 11 May 1934 to 29 September 19341935: 20 May 1935 to 17 September 19351936: 7 September 1936 to 26 September 19361937: 25 June 1937 to 26 September 19371938: 9 September 1938 to 9 September 19381939: 20 July 1939 to 30 October 19391942: 19 May 1942 to 15 September 19421943: 22 May 1943 to 5 October 19431944: 4 May 1944 to 26 September 19441945: 11 June 1945 to 7 September 19451946: 7 May 1946 to 29 September 19461947: 13 April 1947 to 12 October 19471948: 22 June 1948 to 13 September 19481949: 5 May 1949 to 1 October 19491950: 18 April 1950 to 13 October 19501951: 25 May 1951 to 8 October 19511952: 25 March 1952 to 2 October 19521953: 4 May 1953 to 6 October 19531954: 17 April 1954 to 14 October 19541955: 10 May 1955 to 12 October 19551956: 15 May 1956 to 30 September 195619001907191619231930193719461953JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Oakland meeting 30 C (86 F).
First to last qualifying date each year at Oakland
YearFirst dateLast date
19001900-08-011900-09-22
19011901-05-311901-10-12
19021902-07-241902-07-24
19031903-06-051903-09-09
19041904-05-081904-09-29
19051905-07-031905-07-07
19061906-06-191906-07-01
19071907-06-171907-06-17
19081908-06-281908-06-28
19091909-05-301909-09-15
19101910-05-291910-05-30
19121912-05-311912-06-03
19131913-07-051913-10-01
19141914-03-171914-09-10
19161916-07-101916-09-27
19171917-06-151917-10-03
19181918-06-021918-08-29
19191919-05-281919-09-19
19201920-06-191920-06-19
19211921-06-101921-09-28
19221922-09-081922-09-09
19231923-07-271923-09-17
19241924-05-281924-09-11
19251925-06-231925-06-26
19261926-06-051926-07-15
19271927-06-291927-06-30
19281928-06-061928-09-21
19291929-06-201929-07-04
19301930-10-051930-10-06
19311931-05-081931-08-24
19321932-09-011932-09-09
19331933-07-111933-10-17
19341934-05-111934-09-29
19351935-05-201935-09-17
19361936-09-071936-09-26
19371937-06-251937-09-26
19381938-09-091938-09-09
19391939-07-201939-10-30
19421942-05-191942-09-15
19431943-05-221943-10-05
19441944-05-041944-09-26
19451945-06-111945-09-07
19461946-05-071946-09-29
19471947-04-131947-10-12
19481948-06-221948-09-13
19491949-05-051949-10-01
19501950-04-181950-10-13
19511951-05-251951-10-08
19521952-03-251952-10-02
19531953-05-041953-10-06
19541954-04-171954-10-14
19551955-05-101955-10-12
19561956-05-151956-09-30

Every Fixed Threshold

Fixed thresholds at Oakland
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days5326195220
35 C (95 F): Days24719504
90 F (32.2 C): Days411619509
100 F (37.8 C): Days6319501
0 C (32 F): Frost days (min332119494
20 C (68 F): Tropical nights (min14319391
10 mm (0.39 in): Days with 10 mm or more rain4742194117
25 mm (0.98 in): Days with 25 mm or more rain471119265
50 mm (1.97 in): Days with 50 mm or more rain22319041
100 mm (3.94 in): Days with 100 mm or more rain2119041

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1900.

Download the Data

  • Data for Oakland 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).