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Built 2026-10-19 (19 October 2026)

Bettiah Threshold Days by Year (IN004021200)

5 fixed thresholds counted per year at Bettiah (IN004021200): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bettiah Thresholds

  • Bettiah: days with 10 mm (0.39 in) or more of precipitation in 64 years, most in 1952 with 45.
  • Bettiah: days with 25 mm (0.98 in) or more of precipitation in 64 years, most in 1956 with 28.
  • Bettiah: days with 50 mm (1.97 in) or more of precipitation in 64 years, most in 1915 with 14.
  • Bettiah: days with 100 mm (3.94 in) or more of precipitation in 50 years, most in 1903 with 4.
  • 5 fixed thresholds have at least one qualifying day at Bettiah.
64 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Bettiah Days per year at Bettiah with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 45 in 1952. 02040601901: 301902: 311903: 351904: 341905: 441906: 421907: 231908: 211909: 381910: 431911: 361912: 371913: 331915: 411916: 371917: 351918: 391919: 291920: 241921: 361922: 381923: 311924: 391925: 311926: 261927: 271928: 261929: 291930: 241931: 261932: 251933: 351934: 331935: 281936: 391937: 271938: 381939: 291940: 291941: 331942: 351943: 301944: 271945: 321946: 291947: 331948: 351949: 341950: 311951: 281952: 451953: 391954: 261955: 361956: 391959: 291960: 331964: 331965: 321966: 301967: 251968: 311969: 371970: 341901190819161923193019371944195119601970
Days per year at Bettiah with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 45 in 1952.
Days with 10 mm (0.39 in) or more of precipitation per year at Bettiah
YearDaysDecade average
19013033.1
19023133.1
19033533.1
19043433.1
19054433.1
19064233.1
19072333.1
19082133.1
19093833.1
19104336.7
19113636.7
19123736.7
19133336.7
19154136.7
19163736.7
19173536.7
19183936.7
19192936.7
19202430.7
19213630.7
19223830.7
19233130.7
19243930.7
19253130.7
19262630.7
19272730.7
19282630.7
19292930.7
19302430.4
19312630.4
19322530.4
19333530.4
19343330.4
19352830.4
19363930.4
19372730.4
19383830.4
19392930.4
19402931.7
19413331.7
19423531.7
19433031.7
19442731.7
19453231.7
19462931.7
19473331.7
19483531.7
19493431.7
19503134.1
19512834.1
19524534.1
19533934.1
19542634.1
19553634.1
19563934.1
19592934.1
19603331.6
19643331.6
19653231.6
19663031.6
19672531.6
19683131.6
19693731.6
19703434
First to last qualifying date each year at Bettiah For each year, a bar from the first to the last day at Bettiah meeting 10 mm (0.39 in). 1901: 1 January 1901 to 26 September 19011902: 20 March 1902 to 27 September 19021903: 30 May 1903 to 7 October 19031904: 7 May 1904 to 18 December 19041905: 13 January 1905 to 30 September 19051906: 16 February 1906 to 6 October 19061907: 17 March 1907 to 11 September 19071908: 8 June 1908 to 1 October 19081909: 13 April 1909 to 15 September 19091910: 27 May 1910 to 8 October 19101911: 27 January 1911 to 20 November 19111912: 11 January 1912 to 24 November 19121913: 15 May 1913 to 12 December 19131915: 21 February 1915 to 8 October 19151916: 18 February 1916 to 8 October 19161917: 5 February 1917 to 27 September 19171918: 3 April 1918 to 13 September 19181919: 4 May 1919 to 2 October 19191920: 24 June 1920 to 30 September 19201921: 22 January 1921 to 18 October 19211922: 22 January 1922 to 21 September 19221923: 24 February 1923 to 5 October 19231924: 21 June 1924 to 8 November 19241925: 17 April 1925 to 24 September 19251926: 9 January 1926 to 7 October 19261927: 24 February 1927 to 16 November 19271928: 25 January 1928 to 6 October 19281929: 27 January 1929 to 21 December 19291930: 15 January 1930 to 30 December 19301931: 5 March 1931 to 17 October 19311932: 18 April 1932 to 25 December 19321933: 24 January 1933 to 21 October 19331934: 29 January 1934 to 1 October 19341935: 3 January 1935 to 24 September 19351936: 8 February 1936 to 29 September 19361937: 4 May 1937 to 7 October 19371938: 1 February 1938 to 18 September 19381939: 6 June 1939 to 8 October 19391940: 10 February 1940 to 23 September 19401941: 4 January 1941 to 21 October 19411942: 17 January 1942 to 29 September 19421943: 31 January 1943 to 27 September 19431944: 20 February 1944 to 24 September 19441945: 5 January 1945 to 22 October 19451946: 30 April 1946 to 20 October 19461947: 21 March 1947 to 3 October 19471948: 2 May 1948 to 29 November 19481949: 28 January 1949 to 31 October 19491950: 26 January 1950 to 8 September 19501951: 21 January 1951 to 23 September 19511952: 1 March 1952 to 8 October 19521953: 16 January 1953 to 25 September 19531954: 3 May 1954 to 30 August 19541955: 30 April 1955 to 6 October 19551956: 30 January 1956 to 2 November 19561959: 29 May 1959 to 30 October 19591960: 6 March 1960 to 1 November 19601964: 17 April 1964 to 11 October 19641965: 30 March 1965 to 22 October 19651966: 28 January 1966 to 19 September 19661967: 15 June 1967 to 21 September 19671968: 8 January 1968 to 6 October 19681969: 17 April 1969 to 25 September 19691970: 19 February 1970 to 18 September 197019011909191819261934194219501960JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Bettiah meeting 10 mm (0.39 in).
First to last qualifying date each year at Bettiah
YearFirst dateLast date
19011901-01-011901-09-26
19021902-03-201902-09-27
19031903-05-301903-10-07
19041904-05-071904-12-18
19051905-01-131905-09-30
19061906-02-161906-10-06
19071907-03-171907-09-11
19081908-06-081908-10-01
19091909-04-131909-09-15
19101910-05-271910-10-08
19111911-01-271911-11-20
19121912-01-111912-11-24
19131913-05-151913-12-12
19151915-02-211915-10-08
19161916-02-181916-10-08
19171917-02-051917-09-27
19181918-04-031918-09-13
19191919-05-041919-10-02
19201920-06-241920-09-30
19211921-01-221921-10-18
19221922-01-221922-09-21
19231923-02-241923-10-05
19241924-06-211924-11-08
19251925-04-171925-09-24
19261926-01-091926-10-07
19271927-02-241927-11-16
19281928-01-251928-10-06
19291929-01-271929-12-21
19301930-01-151930-12-30
19311931-03-051931-10-17
19321932-04-181932-12-25
19331933-01-241933-10-21
19341934-01-291934-10-01
19351935-01-031935-09-24
19361936-02-081936-09-29
19371937-05-041937-10-07
19381938-02-011938-09-18
19391939-06-061939-10-08
19401940-02-101940-09-23
19411941-01-041941-10-21
19421942-01-171942-09-29
19431943-01-311943-09-27
19441944-02-201944-09-24
19451945-01-051945-10-22
19461946-04-301946-10-20
19471947-03-211947-10-03
19481948-05-021948-11-29
19491949-01-281949-10-31
19501950-01-261950-09-08
19511951-01-211951-09-23
19521952-03-011952-10-08
19531953-01-161953-09-25
19541954-05-031954-08-30
19551955-04-301955-10-06
19561956-01-301956-11-02
19591959-05-291959-10-30
19601960-03-061960-11-01
19641964-04-171964-10-11
19651965-03-301965-10-22
19661966-01-281966-09-19
19671967-06-151967-09-21
19681968-01-081968-10-06
19691969-04-171969-09-25
19701970-02-191970-09-18

Every Fixed Threshold

Fixed thresholds at Bettiah
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain6445195234
25 mm (0.98 in): Days with 25 mm or more rain6428195615
50 mm (1.97 in): Days with 50 mm or more rain641419157
100 mm (3.94 in): Days with 100 mm or more rain50419033
200 mm (7.87 in): Days with 200 mm or more rain4119151

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 Bettiah 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).