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Built 2026-10-19 (19 October 2026)

Jackson Lock 1 Threshold Days by Year (USC00014192)

4 fixed thresholds counted per year at Jackson Lock 1 (USC00014192): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jackson Lock 1 Thresholds

  • Jackson Lock 1: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1947 with 62.
  • Jackson Lock 1: days with 25 mm (0.98 in) or more of precipitation in 26 years, most in 1947 with 29.
  • Jackson Lock 1: days with 50 mm (1.97 in) or more of precipitation in 26 years, most in 1947 with 9.
  • Jackson Lock 1: days with 100 mm (3.94 in) or more of precipitation in 15 years, most in 1941 with 3.
  • 4 fixed thresholds have at least one qualifying day at Jackson Lock 1.
26 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Jackson Lock 1 Days per year at Jackson Lock 1 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 62 in 1947. 0204060801930: 431931: 381932: 451933: 341935: 381936: 491937: 471938: 341939: 451940: 431941: 391942: 441943: 451944: 461945: 441946: 551947: 621951: 321952: 421953: 421954: 271955: 361956: 371957: 391958: 511959: 49193019331937194019431946195219551958
Days per year at Jackson Lock 1 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 62 in 1947.
Days with 10 mm (0.39 in) or more of precipitation per year at Jackson Lock 1
YearDaysDecade average
19304341.4
19313841.4
19324541.4
19333441.4
19353841.4
19364941.4
19374741.4
19383441.4
19394541.4
19404347.3
19413947.3
19424447.3
19434547.3
19444647.3
19454447.3
19465547.3
19476247.3
19513239.4
19524239.4
19534239.4
19542739.4
19553639.4
19563739.4
19573939.4
19585139.4
19594939.4
First to last qualifying date each year at Jackson Lock 1 For each year, a bar from the first to the last day at Jackson Lock 1 meeting 10 mm (0.39 in). 1930: 3 January 1930 to 16 December 19301931: 5 January 1931 to 31 December 19311932: 6 January 1932 to 28 December 19321933: 12 January 1933 to 3 November 19331935: 5 January 1935 to 29 December 19351936: 2 January 1936 to 31 December 19361937: 5 January 1937 to 23 December 19371938: 7 January 1938 to 26 December 19381939: 5 January 1939 to 26 December 19391940: 14 January 1940 to 27 December 19401941: 15 January 1941 to 26 December 19411942: 1 January 1942 to 28 December 19421943: 8 January 1943 to 26 December 19431944: 3 January 1944 to 11 December 19441945: 1 January 1945 to 31 December 19451946: 6 January 1946 to 31 December 19461947: 2 January 1947 to 31 December 19471951: 15 January 1951 to 26 December 19511952: 28 January 1952 to 31 December 19521953: 9 January 1953 to 29 December 19531954: 22 January 1954 to 29 December 19541955: 1 January 1955 to 4 December 19551956: 19 January 1956 to 24 December 19561957: 23 January 1957 to 28 December 19571958: 7 January 1958 to 24 December 19581959: 16 January 1959 to 12 December 19591930193519391943194719541958JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Jackson Lock 1 meeting 10 mm (0.39 in).
First to last qualifying date each year at Jackson Lock 1
YearFirst dateLast date
19301930-01-031930-12-16
19311931-01-051931-12-31
19321932-01-061932-12-28
19331933-01-121933-11-03
19351935-01-051935-12-29
19361936-01-021936-12-31
19371937-01-051937-12-23
19381938-01-071938-12-26
19391939-01-051939-12-26
19401940-01-141940-12-27
19411941-01-151941-12-26
19421942-01-011942-12-28
19431943-01-081943-12-26
19441944-01-031944-12-11
19451945-01-011945-12-31
19461946-01-061946-12-31
19471947-01-021947-12-31
19511951-01-151951-12-26
19521952-01-281952-12-31
19531953-01-091953-12-29
19541954-01-221954-12-29
19551955-01-011955-12-04
19561956-01-191956-12-24
19571957-01-231957-12-28
19581958-01-071958-12-24
19591959-01-161959-12-12

Every Fixed Threshold

Fixed thresholds at Jackson Lock 1
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2662194749
25 mm (0.98 in): Days with 25 mm or more rain2629194721
50 mm (1.97 in): Days with 50 mm or more rain26919475
100 mm (3.94 in): Days with 100 mm or more rain15319411

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1930.

Download the Data

  • Data for Jackson Lock 1 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).