Built 2026-10-16 (16 October 2026)

Byro Threshold Days by Year

5 fixed thresholds counted per year at Byro (ASN00007195): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Byro Thresholds

  • Byro: days with 10 mm (0.39 in) or more of precipitation in 90 years, most in 1974 with 15.
  • Byro: days with 25 mm (0.98 in) or more of precipitation in 79 years, most in 1960 with 7.
  • Byro: days with 50 mm (1.97 in) or more of precipitation in 32 years, most in 1960 with 4.
  • Byro: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1945 with 1.
  • 5 fixed thresholds have at least one qualifying day at Byro.
90 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Byro Days per year at Byro with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 15 in 1974. 0510151907: 101910: 71911: 11913: 41914: 51915: 121916: 101917: 101918: 61919: 41920: 31921: 71922: 31923: 41924: 21925: 31926: 61927: 131928: 41929: 91930: 71931: 51932: 91933: 71934: 61935: 41936: 31937: 51938: 41939: 31940: 31941: 91942: 101943: 51944: 31945: 91946: 41947: 91948: 81949: 31950: 31951: 81952: 51953: 51954: 31955: 81956: 51957: 61958: 71959: 21960: 121961: 71962: 81963: 111964: 41965: 81966: 41967: 51968: 51969: 11970: 41971: 121972: 71973: 91974: 151975: 131976: 31978: 91979: 11980: 111981: 31982: 51983: 61984: 81986: 41987: 61988: 71989: 31990: 41991: 42013: 52015: 72016: 22018: 52019: 42020: 22021: 92022: 52023: 12024: 61907191919281937194619551964197319832015
Days per year at Byro with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 15 in 1974.
Days with 10 mm (0.39 in) or more of precipitation per year at Byro
YearDaysDecade average
19071010
191076.6
191116.6
191346.6
191456.6
1915126.6
1916106.6
1917106.6
191866.6
191946.6
192035.4
192175.4
192235.4
192345.4
192425.4
192535.4
192665.4
1927135.4
192845.4
192995.4
193075.3
193155.3
193295.3
193375.3
193465.3
193545.3
193635.3
193755.3
193845.3
193935.3
194036.3
194196.3
1942106.3
194356.3
194436.3
194596.3
194646.3
194796.3
194886.3
194936.3
195035.2
195185.2
195255.2
195355.2
195435.2
195585.2
195655.2
195765.2
195875.2
195925.2
1960126.5
196176.5
196286.5
1963116.5
196446.5
196586.5
196646.5
196756.5
196856.5
196916.5
197048.1
1971128.1
197278.1
197398.1
1974158.1
1975138.1
197638.1
197898.1
197918.1
1980115.9
198135.9
198255.9
198365.9
198485.9
198645.9
198765.9
198875.9
198935.9
199044
199144
201354.6
201574.6
201624.6
201854.6
201944.6
202024.6
202194.6
202254.6
202314.6
202464.6
First to last qualifying date each year at Byro For each year, a bar from the first to the last day at Byro meeting 10 mm (0.39 in). 1907: 6 February 1907 to 31 July 19071910: 9 February 1910 to 9 July 19101911: 1 June 1911 to 1 June 19111913: 6 March 1913 to 23 July 19131914: 8 February 1914 to 21 July 19141915: 1 January 1915 to 26 June 19151916: 16 January 1916 to 5 October 19161917: 23 January 1917 to 18 September 19171918: 18 January 1918 to 21 July 19181919: 12 March 1919 to 20 August 19191920: 11 March 1920 to 5 August 19201921: 20 February 1921 to 8 August 19211922: 17 April 1922 to 29 May 19221923: 11 March 1923 to 27 July 19231924: 21 July 1924 to 24 July 19241925: 22 January 1925 to 15 August 19251926: 4 February 1926 to 16 July 19261927: 27 February 1927 to 27 July 19271928: 21 May 1928 to 31 December 19281929: 13 February 1929 to 11 August 19291930: 19 February 1930 to 5 August 19301931: 6 April 1931 to 3 August 19311932: 18 January 1932 to 19 December 19321933: 4 March 1933 to 24 August 19331934: 8 March 1934 to 9 June 19341935: 31 January 1935 to 5 August 19351936: 3 June 1936 to 17 December 19361937: 8 February 1937 to 21 December 19371938: 22 February 1938 to 16 July 19381939: 12 February 1939 to 4 August 19391940: 2 January 1940 to 27 July 19401941: 27 February 1941 to 14 December 19411942: 28 January 1942 to 11 August 19421943: 16 January 1943 to 21 March 19431944: 24 May 1944 to 27 July 19441945: 3 February 1945 to 11 November 19451946: 1 February 1946 to 7 June 19461947: 10 February 1947 to 23 October 19471948: 8 February 1948 to 29 August 19481949: 11 February 1949 to 5 August 19491950: 25 May 1950 to 29 July 19501951: 14 January 1951 to 30 July 19511952: 5 May 1952 to 28 July 19521953: 24 March 1953 to 3 October 19531954: 26 May 1954 to 20 August 19541955: 1 January 1955 to 27 December 19551956: 8 May 1956 to 31 August 19561957: 26 January 1957 to 9 June 19571958: 12 January 1958 to 26 November 19581959: 1 June 1959 to 25 July 19591960: 31 January 1960 to 23 July 19601961: 26 January 1961 to 29 August 19611962: 29 January 1962 to 4 December 19621963: 10 January 1963 to 13 July 19631964: 29 March 1964 to 11 June 19641965: 13 January 1965 to 9 August 19651966: 4 April 1966 to 17 June 19661967: 22 January 1967 to 2 December 19671968: 5 February 1968 to 24 June 19681969: 18 May 1969 to 18 May 19691970: 28 April 1970 to 31 May 19701971: 27 January 1971 to 16 August 19711972: 31 May 1972 to 27 July 19721973: 1 April 1973 to 4 December 19731974: 14 February 1974 to 20 October 19741975: 20 February 1975 to 3 November 19751976: 6 March 1976 to 8 August 19761978: 1 January 1978 to 15 August 19781979: 12 February 1979 to 12 February 19791980: 12 January 1980 to 18 July 19801981: 23 June 1981 to 30 July 19811982: 22 January 1982 to 17 August 19821983: 3 June 1983 to 18 November 19831984: 2 March 1984 to 7 October 19841986: 25 February 1986 to 10 September 19861987: 31 January 1987 to 10 November 19871988: 9 April 1988 to 24 July 19881989: 27 May 1989 to 13 June 19891990: 27 January 1990 to 5 August 19901991: 24 February 1991 to 2 July 19912013: 15 March 2013 to 10 December 20132015: 1 February 2015 to 19 June 20152016: 31 January 2016 to 21 June 20162018: 16 January 2018 to 6 June 20182019: 12 April 2019 to 5 July 20192020: 14 March 2020 to 9 December 20202021: 17 January 2021 to 20 October 20212022: 26 March 2022 to 3 September 20222023: 30 March 2023 to 30 March 20232024: 12 April 2024 to 19 July 202419071922193419461958197019832019JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Byro meeting 10 mm (0.39 in).
First to last qualifying date each year at Byro
YearFirst dateLast date
19071907-02-061907-07-31
19101910-02-091910-07-09
19111911-06-011911-06-01
19131913-03-061913-07-23
19141914-02-081914-07-21
19151915-01-011915-06-26
19161916-01-161916-10-05
19171917-01-231917-09-18
19181918-01-181918-07-21
19191919-03-121919-08-20
19201920-03-111920-08-05
19211921-02-201921-08-08
19221922-04-171922-05-29
19231923-03-111923-07-27
19241924-07-211924-07-24
19251925-01-221925-08-15
19261926-02-041926-07-16
19271927-02-271927-07-27
19281928-05-211928-12-31
19291929-02-131929-08-11
19301930-02-191930-08-05
19311931-04-061931-08-03
19321932-01-181932-12-19
19331933-03-041933-08-24
19341934-03-081934-06-09
19351935-01-311935-08-05
19361936-06-031936-12-17
19371937-02-081937-12-21
19381938-02-221938-07-16
19391939-02-121939-08-04
19401940-01-021940-07-27
19411941-02-271941-12-14
19421942-01-281942-08-11
19431943-01-161943-03-21
19441944-05-241944-07-27
19451945-02-031945-11-11
19461946-02-011946-06-07
19471947-02-101947-10-23
19481948-02-081948-08-29
19491949-02-111949-08-05
19501950-05-251950-07-29
19511951-01-141951-07-30
19521952-05-051952-07-28
19531953-03-241953-10-03
19541954-05-261954-08-20
19551955-01-011955-12-27
19561956-05-081956-08-31
19571957-01-261957-06-09
19581958-01-121958-11-26
19591959-06-011959-07-25
19601960-01-311960-07-23
19611961-01-261961-08-29
19621962-01-291962-12-04
19631963-01-101963-07-13
19641964-03-291964-06-11
19651965-01-131965-08-09
19661966-04-041966-06-17
19671967-01-221967-12-02
19681968-02-051968-06-24
19691969-05-181969-05-18
19701970-04-281970-05-31
19711971-01-271971-08-16
19721972-05-311972-07-27
19731973-04-011973-12-04
19741974-02-141974-10-20
19751975-02-201975-11-03
19761976-03-061976-08-08
19781978-01-011978-08-15
19791979-02-121979-02-12
19801980-01-121980-07-18
19811981-06-231981-07-30
19821982-01-221982-08-17
19831983-06-031983-11-18
19841984-03-021984-10-07
19861986-02-251986-09-10
19871987-01-311987-11-10
19881988-04-091988-07-24
19891989-05-271989-06-13
19901990-01-271990-08-05
19911991-02-241991-07-02
20132013-03-152013-12-10
20152015-02-012015-06-19
20162016-01-312016-06-21
20182018-01-162018-06-06
20192019-04-122019-07-05
20202020-03-142020-12-09
20212021-01-172021-10-20
20222022-03-262022-09-03
20232023-03-302023-03-30
20242024-04-122024-07-19

Every Fixed Threshold

Fixed thresholds at Byro
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain901519746
25 mm (0.98 in): Days with 25 mm or more rain79719601
50 mm (1.97 in): Days with 50 mm or more rain32419601
100 mm (3.94 in): Days with 100 mm or more rain4119451
200 mm (7.87 in): Days with 200 mm or more rain1119451

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 Byro 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

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