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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Youanmi Threshold Days by Year

3 fixed thresholds counted per year at Youanmi (ASN00012120): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Youanmi Thresholds

  • Youanmi: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1918 with 10.
  • Youanmi: days with 25 mm (0.98 in) or more of precipitation in 15 years, most in 1933 with 4.
  • Youanmi: days with 50 mm (1.97 in) or more of precipitation in 4 years, most in 1921 with 1.
  • 3 fixed thresholds have at least one qualifying day at Youanmi.
26 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Youanmi Days per year at Youanmi with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 10 in 1918. 0358101913: 91914: 31917: 71918: 101919: 71920: 41921: 71922: 31923: 71924: 41925: 51926: 51930: 51931: 81932: 71933: 81934: 71935: 51936: 21937: 41938: 41939: 61940: 31941: 81942: 91943: 5191319181921192419301933193619391942
Days per year at Youanmi with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 10 in 1918.
Days with 10 mm (0.39 in) or more of precipitation per year at Youanmi
YearDaysDecade average
191397.2
191437.2
191777.2
1918107.2
191977.2
192045
192175
192235
192375
192445
192555
192655
193055.6
193185.6
193275.6
193385.6
193475.6
193555.6
193625.6
193745.6
193845.6
193965.6
194036.3
194186.3
194296.3
194356.3
First to last qualifying date each year at Youanmi For each year, a bar from the first to the last day at Youanmi meeting 10 mm (0.39 in). 1913: 5 January 1913 to 13 December 19131914: 12 July 1914 to 12 November 19141917: 15 March 1917 to 17 November 19171918: 1 January 1918 to 3 July 19181919: 5 May 1919 to 19 November 19191920: 8 April 1920 to 25 November 19201921: 8 May 1921 to 8 December 19211922: 7 June 1922 to 25 August 19221923: 1 March 1923 to 27 July 19231924: 19 March 1924 to 8 August 19241925: 27 February 1925 to 28 December 19251926: 3 February 1926 to 13 December 19261930: 6 March 1930 to 12 December 19301931: 5 January 1931 to 6 November 19311932: 27 May 1932 to 19 December 19321933: 3 February 1933 to 26 August 19331934: 2 January 1934 to 3 September 19341935: 1 February 1935 to 15 March 19351936: 27 January 1936 to 3 June 19361937: 6 January 1937 to 18 May 19371938: 17 January 1938 to 29 December 19381939: 12 January 1939 to 10 November 19391940: 22 January 1940 to 27 July 19401941: 28 February 1941 to 20 December 19411942: 29 January 1942 to 22 December 19421943: 8 March 1943 to 23 August 19431913191919231930193419381942JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Youanmi meeting 10 mm (0.39 in).
First to last qualifying date each year at Youanmi
YearFirst dateLast date
19131913-01-051913-12-13
19141914-07-121914-11-12
19171917-03-151917-11-17
19181918-01-011918-07-03
19191919-05-051919-11-19
19201920-04-081920-11-25
19211921-05-081921-12-08
19221922-06-071922-08-25
19231923-03-011923-07-27
19241924-03-191924-08-08
19251925-02-271925-12-28
19261926-02-031926-12-13
19301930-03-061930-12-12
19311931-01-051931-11-06
19321932-05-271932-12-19
19331933-02-031933-08-26
19341934-01-021934-09-03
19351935-02-011935-03-15
19361936-01-271936-06-03
19371937-01-061937-05-18
19381938-01-171938-12-29
19391939-01-121939-11-10
19401940-01-221940-07-27
19411941-02-281941-12-20
19421942-01-291942-12-22
19431943-03-081943-08-23

Every Fixed Threshold

Fixed thresholds at Youanmi
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain261019185
25 mm (0.98 in): Days with 25 mm or more rain15419331
50 mm (1.97 in): Days with 50 mm or more rain4119211

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1913.

Download the Data

  • Data for Youanmi 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

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