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Built 2026-10-19 (19 October 2026)

Jacobs Well Threshold Days by Year (ASN00010570)

4 fixed thresholds counted per year at Jacobs Well (ASN00010570): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jacobs Well Thresholds

  • Jacobs Well: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1917 with 21.
  • Jacobs Well: days with 25 mm (0.98 in) or more of precipitation in 29 years, most in 1917 with 5.
  • Jacobs Well: days with 50 mm (1.97 in) or more of precipitation in 4 years, most in 1918 with 2.
  • Jacobs Well: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1934 with 1.
  • 4 fixed thresholds have at least one qualifying day at Jacobs Well.
33 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Jacobs Well Days per year at Jacobs Well with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1917. 01020301917: 211918: 161919: 101920: 121921: 141922: 91923: 161924: 121925: 101926: 161927: 101929: 111930: 101931: 111932: 211933: 101934: 121935: 111936: 101937: 91938: 121939: 191940: 81941: 131942: 171944: 81945: 141946: 161947: 131948: 121949: 91950: 111951: 13191719211925193019341938194219471951
Days per year at Jacobs Well with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1917.
Days with 10 mm (0.39 in) or more of precipitation per year at Jacobs Well
YearDaysDecade average
19172115.7
19181615.7
19191015.7
19201212.2
19211412.2
1922912.2
19231612.2
19241212.2
19251012.2
19261612.2
19271012.2
19291112.2
19301012.5
19311112.5
19322112.5
19331012.5
19341212.5
19351112.5
19361012.5
1937912.5
19381212.5
19391912.5
1940812.2
19411312.2
19421712.2
1944812.2
19451412.2
19461612.2
19471312.2
19481212.2
1949912.2
19501112
19511312
First to last qualifying date each year at Jacobs Well For each year, a bar from the first to the last day at Jacobs Well meeting 10 mm (0.39 in). 1917: 16 March 1917 to 30 September 19171918: 18 January 1918 to 22 October 19181919: 18 January 1919 to 4 November 19191920: 13 March 1920 to 30 August 19201921: 22 February 1921 to 14 December 19211922: 24 February 1922 to 14 September 19221923: 20 January 1923 to 22 December 19231924: 1 April 1924 to 14 October 19241925: 24 January 1925 to 11 October 19251926: 18 May 1926 to 25 November 19261927: 13 March 1927 to 19 November 19271929: 17 March 1929 to 11 November 19291930: 16 April 1930 to 18 August 19301931: 4 May 1931 to 26 December 19311932: 18 January 1932 to 23 October 19321933: 7 March 1933 to 4 October 19331934: 16 January 1934 to 5 November 19341935: 6 January 1935 to 22 October 19351936: 9 May 1936 to 18 December 19361937: 19 April 1937 to 13 November 19371938: 14 March 1938 to 2 November 19381939: 21 January 1939 to 1 November 19391940: 23 January 1940 to 3 December 19401941: 13 April 1941 to 3 October 19411942: 15 March 1942 to 21 December 19421944: 5 April 1944 to 12 August 19441945: 26 March 1945 to 22 August 19451946: 19 April 1946 to 12 October 19461947: 6 March 1947 to 20 November 19471948: 5 June 1948 to 9 November 19481949: 29 April 1949 to 5 November 19491950: 6 May 1950 to 10 October 19501951: 13 February 1951 to 4 August 19511917192219271933193819441949JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Jacobs Well meeting 10 mm (0.39 in).
First to last qualifying date each year at Jacobs Well
YearFirst dateLast date
19171917-03-161917-09-30
19181918-01-181918-10-22
19191919-01-181919-11-04
19201920-03-131920-08-30
19211921-02-221921-12-14
19221922-02-241922-09-14
19231923-01-201923-12-22
19241924-04-011924-10-14
19251925-01-241925-10-11
19261926-05-181926-11-25
19271927-03-131927-11-19
19291929-03-171929-11-11
19301930-04-161930-08-18
19311931-05-041931-12-26
19321932-01-181932-10-23
19331933-03-071933-10-04
19341934-01-161934-11-05
19351935-01-061935-10-22
19361936-05-091936-12-18
19371937-04-191937-11-13
19381938-03-141938-11-02
19391939-01-211939-11-01
19401940-01-231940-12-03
19411941-04-131941-10-03
19421942-03-151942-12-21
19441944-04-051944-08-12
19451945-03-261945-08-22
19461946-04-191946-10-12
19471947-03-061947-11-20
19481948-06-051948-11-09
19491949-04-291949-11-05
19501950-05-061950-10-10
19511951-02-131951-08-04

Every Fixed Threshold

Fixed thresholds at Jacobs Well
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3321191713
25 mm (0.98 in): Days with 25 mm or more rain29519173
50 mm (1.97 in): Days with 50 mm or more rain4219181
100 mm (3.94 in): Days with 100 mm or more rain1119341

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.

Download the Data

  • Data for Jacobs Well 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).