Built 2026-10-19 (19 October 2026)

Rosalind Threshold Days by Year (ASN00025016)

3 fixed thresholds counted per year at Rosalind (ASN00025016): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rosalind Thresholds

  • Rosalind: days with 10 mm (0.39 in) or more of precipitation in 38 years, most in 1916 with 12.
  • Rosalind: days with 25 mm (0.98 in) or more of precipitation in 19 years, most in 1946 with 4.
  • Rosalind: days with 50 mm (1.97 in) or more of precipitation in 4 years, most in 1946 with 2.
  • 3 fixed thresholds have at least one qualifying day at Rosalind.
38 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Rosalind Days per year at Rosalind with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 12 in 1916. 0510151916: 121917: 121918: 31919: 51920: 51921: 61922: 71923: 61924: 71925: 71926: 71927: 31928: 51929: 41930: 61931: 41932: 71933: 41934: 81935: 71936: 71937: 101938: 51939: 61940: 31941: 121942: 71943: 51944: 31945: 51946: 81947: 91948: 41949: 51950: 111951: 51952: 61953: 51916192019241928193219361940194419481952
Days per year at Rosalind with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 12 in 1916.
Days with 10 mm (0.39 in) or more of precipitation per year at Rosalind
YearDaysDecade average
1916128
1917128
191838
191958
192055.7
192165.7
192275.7
192365.7
192475.7
192575.7
192675.7
192735.7
192855.7
192945.7
193066.4
193146.4
193276.4
193346.4
193486.4
193576.4
193676.4
1937106.4
193856.4
193966.4
194036.1
1941126.1
194276.1
194356.1
194436.1
194556.1
194686.1
194796.1
194846.1
194956.1
1950116.8
195156.8
195266.8
195356.8
First to last qualifying date each year at Rosalind For each year, a bar from the first to the last day at Rosalind meeting 10 mm (0.39 in). 1916: 7 March 1916 to 9 December 19161917: 22 February 1917 to 12 December 19171918: 25 April 1918 to 20 August 19181919: 17 February 1919 to 25 December 19191920: 1 June 1920 to 24 October 19201921: 25 February 1921 to 5 November 19211922: 25 April 1922 to 9 December 19221923: 8 May 1923 to 18 December 19231924: 20 February 1924 to 7 November 19241925: 13 January 1925 to 12 September 19251926: 1 May 1926 to 26 September 19261927: 5 January 1927 to 2 December 19271928: 27 January 1928 to 30 September 19281929: 20 February 1929 to 28 December 19291930: 12 May 1930 to 24 October 19301931: 14 April 1931 to 17 November 19311932: 5 February 1932 to 15 December 19321933: 22 January 1933 to 31 August 19331934: 17 February 1934 to 8 November 19341935: 16 July 1935 to 21 October 19351936: 7 January 1936 to 18 December 19361937: 19 January 1937 to 3 December 19371938: 19 February 1938 to 27 November 19381939: 25 February 1939 to 3 November 19391940: 24 April 1940 to 27 September 19401941: 25 January 1941 to 19 November 19411942: 20 January 1942 to 5 November 19421943: 18 February 1943 to 18 December 19431944: 7 February 1944 to 3 May 19441945: 20 June 1945 to 27 December 19451946: 18 January 1946 to 26 December 19461947: 29 March 1947 to 23 December 19471948: 11 April 1948 to 16 December 19481949: 20 February 1949 to 9 October 19491950: 2 February 1950 to 20 December 19501951: 13 May 1951 to 10 October 19511952: 25 January 1952 to 20 November 19521953: 10 June 1953 to 21 October 195319161921192619311936194119461951JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rosalind meeting 10 mm (0.39 in).
First to last qualifying date each year at Rosalind
YearFirst dateLast date
19161916-03-071916-12-09
19171917-02-221917-12-12
19181918-04-251918-08-20
19191919-02-171919-12-25
19201920-06-011920-10-24
19211921-02-251921-11-05
19221922-04-251922-12-09
19231923-05-081923-12-18
19241924-02-201924-11-07
19251925-01-131925-09-12
19261926-05-011926-09-26
19271927-01-051927-12-02
19281928-01-271928-09-30
19291929-02-201929-12-28
19301930-05-121930-10-24
19311931-04-141931-11-17
19321932-02-051932-12-15
19331933-01-221933-08-31
19341934-02-171934-11-08
19351935-07-161935-10-21
19361936-01-071936-12-18
19371937-01-191937-12-03
19381938-02-191938-11-27
19391939-02-251939-11-03
19401940-04-241940-09-27
19411941-01-251941-11-19
19421942-01-201942-11-05
19431943-02-181943-12-18
19441944-02-071944-05-03
19451945-06-201945-12-27
19461946-01-181946-12-26
19471947-03-291947-12-23
19481948-04-111948-12-16
19491949-02-201949-10-09
19501950-02-021950-12-20
19511951-05-131951-10-10
19521952-01-251952-11-20
19531953-06-101953-10-21

Every Fixed Threshold

Fixed thresholds at Rosalind
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain381219165
25 mm (0.98 in): Days with 25 mm or more rain19419462
50 mm (1.97 in): Days with 50 mm or more rain4219461

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1916.

Download the Data

  • Data for Rosalind 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).