Built 2026-10-19 (19 October 2026)

Mount Nassau Threshold Days by Year (ASN00094101)

3 fixed thresholds counted per year at Mount Nassau (ASN00094101): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mount Nassau Thresholds

  • Mount Nassau: days with 10 mm (0.39 in) or more of precipitation in 29 years, most in 1923 with 24.
  • Mount Nassau: days with 25 mm (0.98 in) or more of precipitation in 25 years, most in 1938 with 8.
  • Mount Nassau: days with 50 mm (1.97 in) or more of precipitation in 5 years, most in 1916 with 2.
  • 3 fixed thresholds have at least one qualifying day at Mount Nassau.
29 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Mount Nassau Days per year at Mount Nassau with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1923. 01020301907: 111914: 81915: 91916: 231917: 151918: 151919: 151920: 71921: 111922: 141923: 241924: 171925: 101926: 151927: 101928: 171929: 131930: 151931: 221932: 221933: 91934: 141936: 161937: 151938: 181939: 181940: 131941: 171942: 111907191619191922192519281931193419381941
Days per year at Mount Nassau with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1923.
Days with 10 mm (0.39 in) or more of precipitation per year at Mount Nassau
YearDaysDecade average
19071111
1914814.2
1915914.2
19162314.2
19171514.2
19181514.2
19191514.2
1920713.8
19211113.8
19221413.8
19232413.8
19241713.8
19251013.8
19261513.8
19271013.8
19281713.8
19291313.8
19301516.6
19312216.6
19322216.6
1933916.6
19341416.6
19361616.6
19371516.6
19381816.6
19391816.6
19401313.7
19411713.7
19421113.7
First to last qualifying date each year at Mount Nassau For each year, a bar from the first to the last day at Mount Nassau meeting 10 mm (0.39 in). 1907: 13 January 1907 to 26 November 19071914: 11 April 1914 to 6 December 19141915: 9 March 1915 to 29 November 19151916: 29 January 1916 to 30 December 19161917: 3 January 1917 to 23 September 19171918: 10 January 1918 to 20 December 19181919: 7 January 1919 to 18 December 19191920: 26 January 1920 to 17 December 19201921: 2 January 1921 to 4 August 19211922: 21 February 1922 to 23 December 19221923: 22 January 1923 to 6 December 19231924: 10 January 1924 to 25 November 19241925: 21 February 1925 to 26 December 19251926: 18 January 1926 to 6 December 19261927: 19 February 1927 to 19 December 19271928: 1 January 1928 to 15 December 19281929: 26 January 1929 to 29 December 19291930: 19 January 1930 to 25 December 19301931: 23 January 1931 to 23 November 19311932: 11 February 1932 to 24 December 19321933: 19 February 1933 to 30 November 19331934: 9 January 1934 to 29 December 19341936: 17 April 1936 to 20 December 19361937: 2 January 1937 to 27 December 19371938: 2 January 1938 to 28 December 19381939: 17 February 1939 to 24 December 19391940: 6 January 1940 to 28 December 19401941: 1 January 1941 to 5 December 19411942: 24 February 1942 to 27 November 194219071917192119251929193319381942JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mount Nassau meeting 10 mm (0.39 in).
First to last qualifying date each year at Mount Nassau
YearFirst dateLast date
19071907-01-131907-11-26
19141914-04-111914-12-06
19151915-03-091915-11-29
19161916-01-291916-12-30
19171917-01-031917-09-23
19181918-01-101918-12-20
19191919-01-071919-12-18
19201920-01-261920-12-17
19211921-01-021921-08-04
19221922-02-211922-12-23
19231923-01-221923-12-06
19241924-01-101924-11-25
19251925-02-211925-12-26
19261926-01-181926-12-06
19271927-02-191927-12-19
19281928-01-011928-12-15
19291929-01-261929-12-29
19301930-01-191930-12-25
19311931-01-231931-11-23
19321932-02-111932-12-24
19331933-02-191933-11-30
19341934-01-091934-12-29
19361936-04-171936-12-20
19371937-01-021937-12-27
19381938-01-021938-12-28
19391939-02-171939-12-24
19401940-01-061940-12-28
19411941-01-011941-12-05
19421942-02-241942-11-27

Every Fixed Threshold

Fixed thresholds at Mount Nassau
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2924192311
25 mm (0.98 in): Days with 25 mm or more rain25819382
50 mm (1.97 in): Days with 50 mm or more rain5219161

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

Download the Data

  • Data for Mount Nassau 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).