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Built 2026-10-19 (19 October 2026)

Brentwood Post Office Threshold Days by Year (ASN00022001)

3 fixed thresholds counted per year at Brentwood Post Office (ASN00022001): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Brentwood Post Office Thresholds

  • Brentwood Post Office: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1898 with 12.
  • Brentwood Post Office: days with 25 mm (0.98 in) or more of precipitation in 29 years, most in 1923 with 4.
  • Brentwood Post Office: days with 50 mm (1.97 in) or more of precipitation in 3 years, most in 1939 with 1.
  • 3 fixed thresholds have at least one qualifying day at Brentwood Post Office.
46 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Brentwood Post Office Days per year at Brentwood Post Office with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 12 in 1898. 0510151898: 121899: 31901: 101902: 51908: 101911: 71912: 51914: 91918: 81919: 51922: 81923: 91926: 111927: 51928: 31929: 41930: 61931: 81933: 61934: 81935: 101936: 31939: 111940: 101941: 91942: 121943: 61944: 111945: 81947: 111949: 41950: 41951: 121952: 71953: 61954: 61955: 101957: 41959: 11961: 21962: 71969: 51970: 71971: 71972: 51973: 111898191119221929193519421949195419621973
Days per year at Brentwood Post Office with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 12 in 1898.
Days with 10 mm (0.39 in) or more of precipitation per year at Brentwood Post Office
YearDaysDecade average
1898127.5
189937.5
1901108.3
190258.3
1908108.3
191176.8
191256.8
191496.8
191886.8
191956.8
192286.7
192396.7
1926116.7
192756.7
192836.7
192946.7
193067.4
193187.4
193367.4
193487.4
1935107.4
193637.4
1939117.4
1940108.9
194198.9
1942128.9
194368.9
1944118.9
194588.9
1947118.9
194948.9
195046.3
1951126.3
195276.3
195366.3
195466.3
1955106.3
195746.3
195916.3
196124.7
196274.7
196954.7
197077.5
197177.5
197257.5
1973117.5
First to last qualifying date each year at Brentwood Post Office For each year, a bar from the first to the last day at Brentwood Post Office meeting 10 mm (0.39 in). 1898: 4 April 1898 to 28 October 18981899: 9 June 1899 to 9 September 18991901: 2 April 1901 to 12 October 19011902: 26 March 1902 to 17 December 19021908: 16 April 1908 to 16 October 19081911: 7 February 1911 to 23 November 19111912: 22 February 1912 to 18 September 19121914: 12 March 1914 to 25 November 19141918: 5 March 1918 to 20 August 19181919: 18 February 1919 to 24 December 19191922: 6 January 1922 to 9 December 19221923: 5 May 1923 to 14 December 19231926: 14 April 1926 to 12 October 19261927: 5 February 1927 to 2 December 19271928: 25 May 1928 to 6 October 19281929: 5 June 1929 to 27 December 19291930: 21 February 1930 to 5 December 19301931: 13 March 1931 to 30 September 19311933: 18 January 1933 to 1 September 19331934: 4 April 1934 to 14 October 19341935: 14 May 1935 to 24 December 19351936: 11 June 1936 to 14 November 19361939: 16 January 1939 to 3 November 19391940: 5 January 1940 to 19 December 19401941: 24 January 1941 to 16 December 19411942: 20 January 1942 to 21 November 19421943: 17 February 1943 to 9 October 19431944: 2 April 1944 to 7 November 19441945: 20 June 1945 to 16 December 19451947: 9 February 1947 to 19 October 19471949: 18 May 1949 to 20 November 19491950: 31 August 1950 to 20 December 19501951: 21 February 1951 to 31 December 19511952: 24 January 1952 to 26 November 19521953: 10 June 1953 to 4 November 19531954: 27 January 1954 to 3 June 19541955: 9 February 1955 to 29 October 19551957: 17 May 1957 to 9 August 19571959: 28 October 1959 to 28 October 19591961: 5 July 1961 to 16 August 19611962: 20 February 1962 to 19 October 19621969: 9 February 1969 to 30 August 19691970: 10 April 1970 to 5 December 19701971: 26 April 1971 to 10 December 19711972: 9 January 1972 to 26 December 19721973: 6 February 1973 to 2 December 197318981912192619331941194919551970JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Brentwood Post Office meeting 10 mm (0.39 in).
First to last qualifying date each year at Brentwood Post Office
YearFirst dateLast date
18981898-04-041898-10-28
18991899-06-091899-09-09
19011901-04-021901-10-12
19021902-03-261902-12-17
19081908-04-161908-10-16
19111911-02-071911-11-23
19121912-02-221912-09-18
19141914-03-121914-11-25
19181918-03-051918-08-20
19191919-02-181919-12-24
19221922-01-061922-12-09
19231923-05-051923-12-14
19261926-04-141926-10-12
19271927-02-051927-12-02
19281928-05-251928-10-06
19291929-06-051929-12-27
19301930-02-211930-12-05
19311931-03-131931-09-30
19331933-01-181933-09-01
19341934-04-041934-10-14
19351935-05-141935-12-24
19361936-06-111936-11-14
19391939-01-161939-11-03
19401940-01-051940-12-19
19411941-01-241941-12-16
19421942-01-201942-11-21
19431943-02-171943-10-09
19441944-04-021944-11-07
19451945-06-201945-12-16
19471947-02-091947-10-19
19491949-05-181949-11-20
19501950-08-311950-12-20
19511951-02-211951-12-31
19521952-01-241952-11-26
19531953-06-101953-11-04
19541954-01-271954-06-03
19551955-02-091955-10-29
19571957-05-171957-08-09
19591959-10-281959-10-28
19611961-07-051961-08-16
19621962-02-201962-10-19
19691969-02-091969-08-30
19701970-04-101970-12-05
19711971-04-261971-12-10
19721972-01-091972-12-26
19731973-02-061973-12-02

Every Fixed Threshold

Fixed thresholds at Brentwood Post Office
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4612189811
25 mm (0.98 in): Days with 25 mm or more rain29419232
50 mm (1.97 in): Days with 50 mm or more rain3119391

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

Download the Data

  • Data for Brentwood Post Office 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).