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

Boko Threshold Days by Year (IN003040201)

5 fixed thresholds counted per year at Boko (IN003040201): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Boko Thresholds

  • Boko: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 1949 with 90.
  • Boko: days with 25 mm (0.98 in) or more of precipitation in 45 years, most in 1945 with 48.
  • Boko: days with 50 mm (1.97 in) or more of precipitation in 45 years, most in 1953 with 18.
  • Boko: days with 100 mm (3.94 in) or more of precipitation in 26 years, most in 1946 with 4.
  • 5 fixed thresholds have at least one qualifying day at Boko.
45 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Boko Days per year at Boko with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 90 in 1949. 02550751001901: 561902: 661903: 661904: 741905: 591906: 611907: 611908: 451909: 621910: 641911: 671912: 741913: 671914: 531915: 671916: 531917: 641918: 631919: 621920: 711922: 551923: 591924: 681925: 631926: 661927: 581928: 661929: 711931: 681932: 701933: 431934: 711935: 561936: 541937: 631938: 561939: 551942: 681944: 531945: 701946: 301949: 901952: 821953: 641954: 50190119061911191619221927193319381946
Days per year at Boko with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 90 in 1949.
Days with 10 mm (0.39 in) or more of precipitation per year at Boko
YearDaysDecade average
19015661.1
19026661.1
19036661.1
19047461.1
19055961.1
19066161.1
19076161.1
19084561.1
19096261.1
19106463.4
19116763.4
19127463.4
19136763.4
19145363.4
19156763.4
19165363.4
19176463.4
19186363.4
19196263.4
19207164.1
19225564.1
19235964.1
19246864.1
19256364.1
19266664.1
19275864.1
19286664.1
19297164.1
19316859.6
19327059.6
19334359.6
19347159.6
19355659.6
19365459.6
19376359.6
19385659.6
19395559.6
19426862.2
19445362.2
19457062.2
19463062.2
19499062.2
19528265.3
19536465.3
19545065.3
First to last qualifying date each year at Boko For each year, a bar from the first to the last day at Boko meeting 10 mm (0.39 in). 1901: 2 January 1901 to 27 November 19011902: 23 February 1902 to 12 October 19021903: 14 February 1903 to 31 October 19031904: 18 February 1904 to 19 October 19041905: 17 February 1905 to 28 October 19051906: 22 February 1906 to 6 October 19061907: 5 March 1907 to 30 September 19071908: 1 February 1908 to 9 November 19081909: 17 January 1909 to 26 November 19091910: 27 March 1910 to 15 October 19101911: 27 January 1911 to 12 November 19111912: 25 February 1912 to 2 November 19121913: 15 February 1913 to 13 December 19131914: 18 February 1914 to 10 November 19141915: 6 February 1915 to 20 October 19151916: 25 March 1916 to 11 November 19161917: 23 February 1917 to 31 October 19171918: 21 January 1918 to 13 October 19181919: 2 March 1919 to 7 October 19191920: 3 March 1920 to 12 October 19201922: 23 March 1922 to 22 December 19221923: 11 February 1923 to 29 December 19231924: 4 February 1924 to 17 November 19241925: 9 April 1925 to 18 October 19251926: 1 March 1926 to 21 October 19261927: 13 January 1927 to 6 November 19271928: 25 January 1928 to 29 October 19281929: 17 January 1929 to 19 October 19291931: 5 March 1931 to 27 October 19311932: 4 February 1932 to 24 December 19321933: 14 February 1933 to 22 October 19331934: 17 February 1934 to 15 October 19341935: 17 February 1935 to 23 September 19351936: 10 February 1936 to 6 October 19361937: 18 February 1937 to 14 October 19371938: 18 March 1938 to 17 October 19381939: 20 February 1939 to 24 October 19391942: 21 February 1942 to 23 October 19421944: 5 January 1944 to 8 October 19441945: 7 January 1945 to 23 October 19451946: 20 February 1946 to 21 October 19461949: 30 January 1949 to 31 October 19491952: 2 March 1952 to 10 October 19521953: 8 March 1953 to 15 December 19531954: 17 January 1954 to 7 October 195419011907191319191926193319391952JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Boko meeting 10 mm (0.39 in).
First to last qualifying date each year at Boko
YearFirst dateLast date
19011901-01-021901-11-27
19021902-02-231902-10-12
19031903-02-141903-10-31
19041904-02-181904-10-19
19051905-02-171905-10-28
19061906-02-221906-10-06
19071907-03-051907-09-30
19081908-02-011908-11-09
19091909-01-171909-11-26
19101910-03-271910-10-15
19111911-01-271911-11-12
19121912-02-251912-11-02
19131913-02-151913-12-13
19141914-02-181914-11-10
19151915-02-061915-10-20
19161916-03-251916-11-11
19171917-02-231917-10-31
19181918-01-211918-10-13
19191919-03-021919-10-07
19201920-03-031920-10-12
19221922-03-231922-12-22
19231923-02-111923-12-29
19241924-02-041924-11-17
19251925-04-091925-10-18
19261926-03-011926-10-21
19271927-01-131927-11-06
19281928-01-251928-10-29
19291929-01-171929-10-19
19311931-03-051931-10-27
19321932-02-041932-12-24
19331933-02-141933-10-22
19341934-02-171934-10-15
19351935-02-171935-09-23
19361936-02-101936-10-06
19371937-02-181937-10-14
19381938-03-181938-10-17
19391939-02-201939-10-24
19421942-02-211942-10-23
19441944-01-051944-10-08
19451945-01-071945-10-23
19461946-02-201946-10-21
19491949-01-301949-10-31
19521952-03-021952-10-10
19531953-03-081953-12-15
19541954-01-171954-10-07

Every Fixed Threshold

Fixed thresholds at Boko
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4590194950
25 mm (0.98 in): Days with 25 mm or more rain4548194520
50 mm (1.97 in): Days with 50 mm or more rain451819532
100 mm (3.94 in): Days with 100 mm or more rain26419461
200 mm (7.87 in): Days with 200 mm or more rain1119421

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.

Download the Data

  • Data for Boko 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).