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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Rosamel Threshold Days by Year

4 fixed thresholds counted per year at Rosamel (ASN00009643): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rosamel Thresholds

  • Rosamel: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1926 with 53.
  • Rosamel: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1926 with 16.
  • Rosamel: days with 50 mm (1.97 in) or more of precipitation in 18 years, most in 1927 with 4.
  • Rosamel: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1941 with 1.
  • 4 fixed thresholds have at least one qualifying day at Rosamel.
31 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Rosamel Days per year at Rosamel with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 53 in 1926. 02040601920: 301921: 331923: 291925: 151926: 531927: 361928: 341929: 271930: 311931: 351932: 311933: 421934: 301935: 431936: 281937: 401938: 341939: 451941: 321942: 281943: 271954: 271955: 411956: 371957: 351958: 271959: 241960: 221961: 311962: 251963: 4119201926193019341938194319571961
Days per year at Rosamel with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 53 in 1926.
Days with 10 mm (0.39 in) or more of precipitation per year at Rosamel
YearDaysDecade average
19203032.1
19213332.1
19232932.1
19251532.1
19265332.1
19273632.1
19283432.1
19292732.1
19303135.9
19313535.9
19323135.9
19334235.9
19343035.9
19354335.9
19362835.9
19374035.9
19383435.9
19394535.9
19413229
19422829
19432729
19542731.8
19554131.8
19563731.8
19573531.8
19582731.8
19592431.8
19602229.8
19613129.8
19622529.8
19634129.8
First to last qualifying date each year at Rosamel For each year, a bar from the first to the last day at Rosamel meeting 10 mm (0.39 in). 1920: 29 March 1920 to 10 October 19201921: 19 February 1921 to 31 October 19211923: 20 January 1923 to 8 October 19231925: 6 May 1925 to 11 October 19251926: 17 March 1926 to 27 November 19261927: 11 January 1927 to 12 October 19271928: 9 January 1928 to 2 November 19281929: 1 May 1929 to 6 October 19291930: 17 April 1930 to 18 October 19301931: 6 April 1931 to 4 October 19311932: 28 March 1932 to 29 October 19321933: 15 January 1933 to 19 October 19331934: 7 March 1934 to 13 September 19341935: 6 January 1935 to 1 December 19351936: 9 May 1936 to 17 December 19361937: 11 February 1937 to 4 December 19371938: 28 February 1938 to 2 November 19381939: 13 February 1939 to 25 November 19391941: 27 February 1941 to 20 September 19411942: 14 March 1942 to 3 October 19421943: 31 January 1943 to 8 December 19431954: 12 April 1954 to 11 November 19541955: 15 February 1955 to 13 October 19551956: 4 March 1956 to 29 November 19561957: 19 March 1957 to 20 October 19571958: 13 February 1958 to 14 October 19581959: 3 May 1959 to 31 December 19591960: 1 January 1960 to 22 September 19601961: 26 January 1961 to 15 December 19611962: 12 May 1962 to 6 December 19621963: 22 April 1963 to 14 October 196319201926193019341938194319571961JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rosamel meeting 10 mm (0.39 in).
First to last qualifying date each year at Rosamel
YearFirst dateLast date
19201920-03-291920-10-10
19211921-02-191921-10-31
19231923-01-201923-10-08
19251925-05-061925-10-11
19261926-03-171926-11-27
19271927-01-111927-10-12
19281928-01-091928-11-02
19291929-05-011929-10-06
19301930-04-171930-10-18
19311931-04-061931-10-04
19321932-03-281932-10-29
19331933-01-151933-10-19
19341934-03-071934-09-13
19351935-01-061935-12-01
19361936-05-091936-12-17
19371937-02-111937-12-04
19381938-02-281938-11-02
19391939-02-131939-11-25
19411941-02-271941-09-20
19421942-03-141942-10-03
19431943-01-311943-12-08
19541954-04-121954-11-11
19551955-02-151955-10-13
19561956-03-041956-11-29
19571957-03-191957-10-20
19581958-02-131958-10-14
19591959-05-031959-12-31
19601960-01-011960-09-22
19611961-01-261961-12-15
19621962-05-121962-12-06
19631963-04-221963-10-14

Every Fixed Threshold

Fixed thresholds at Rosamel
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3153192641
25 mm (0.98 in): Days with 25 mm or more rain3116192611
50 mm (1.97 in): Days with 50 mm or more rain18419271
100 mm (3.94 in): Days with 100 mm or more rain1119411

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1920.

Download the Data

  • Data for Rosamel 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).