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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Cotter Threshold Days by Year (USC00031640)

5 fixed thresholds counted per year at Cotter (USC00031640): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cotter Thresholds

  • Cotter: days with 10 mm (0.39 in) or more of precipitation in 25 years, most in 1950 with 49.
  • Cotter: days with 25 mm (0.98 in) or more of precipitation in 25 years, most in 1935 with 20.
  • Cotter: days with 50 mm (1.97 in) or more of precipitation in 21 years, most in 1942 with 5.
  • Cotter: days with 10 cm (3.9 in) or more of snowfall in 4 years, most in 1955 with 2.
  • 5 fixed thresholds have at least one qualifying day at Cotter.
25 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Cotter Days per year at Cotter with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 49 in 1950. 02040601928: 421929: 371930: 381931: 351932: 291933: 401934: 321935: 431936: 261937: 421938: 371939: 351940: 271941: 361942: 391943: 261944: 421948: 411949: 471950: 491951: 481952: 341953: 241954: 321955: 27192819311934193719401943194919521955
Days per year at Cotter with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 49 in 1950.
Days with 10 mm (0.39 in) or more of precipitation per year at Cotter
YearDaysDecade average
19284239.5
19293739.5
19303835.7
19313535.7
19322935.7
19334035.7
19343235.7
19354335.7
19362635.7
19374235.7
19383735.7
19393535.7
19402736.9
19413636.9
19423936.9
19432636.9
19444236.9
19484136.9
19494736.9
19504935.7
19514835.7
19523435.7
19532435.7
19543235.7
19552735.7
First to last qualifying date each year at Cotter For each year, a bar from the first to the last day at Cotter meeting 10 mm (0.39 in). 1928: 18 January 1928 to 17 December 19281929: 5 January 1929 to 18 December 19291930: 2 January 1930 to 5 December 19301931: 8 February 1931 to 30 December 19311932: 5 January 1932 to 31 December 19321933: 17 January 1933 to 19 December 19331934: 4 January 1934 to 19 December 19341935: 8 January 1935 to 7 December 19351936: 2 February 1936 to 30 December 19361937: 2 January 1937 to 17 December 19371938: 21 January 1938 to 3 December 19381939: 5 January 1939 to 27 December 19391940: 18 February 1940 to 31 December 19401941: 1 January 1941 to 23 December 19411942: 1 January 1942 to 28 December 19421943: 3 February 1943 to 28 December 19431944: 8 January 1944 to 29 December 19441948: 1 January 1948 to 25 December 19481949: 4 January 1949 to 26 December 19491950: 2 January 1950 to 3 December 19501951: 2 January 1951 to 27 November 19511952: 2 January 1952 to 4 December 19521953: 8 January 1953 to 3 December 19531954: 10 January 1954 to 28 December 19541955: 5 February 1955 to 19 November 19551928193219361940194419511955JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Cotter meeting 10 mm (0.39 in).
First to last qualifying date each year at Cotter
YearFirst dateLast date
19281928-01-181928-12-17
19291929-01-051929-12-18
19301930-01-021930-12-05
19311931-02-081931-12-30
19321932-01-051932-12-31
19331933-01-171933-12-19
19341934-01-041934-12-19
19351935-01-081935-12-07
19361936-02-021936-12-30
19371937-01-021937-12-17
19381938-01-211938-12-03
19391939-01-051939-12-27
19401940-02-181940-12-31
19411941-01-011941-12-23
19421942-01-011942-12-28
19431943-02-031943-12-28
19441944-01-081944-12-29
19481948-01-011948-12-25
19491949-01-041949-12-26
19501950-01-021950-12-03
19511951-01-021951-11-27
19521952-01-021952-12-04
19531953-01-081953-12-03
19541954-01-101954-12-28
19551955-02-051955-11-19

Every Fixed Threshold

Fixed thresholds at Cotter
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2549195027
25 mm (0.98 in): Days with 25 mm or more rain2520193513
50 mm (1.97 in): Days with 50 mm or more rain21519421
100 mm (3.94 in): Days with 100 mm or more rain3119371
10 cm (3.9 in): Days with 10 cm or more snowfall4219552

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1928.

Download the Data

  • Data for Cotter 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).