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

Towan Threshold Days by Year

3 fixed thresholds counted per year at Towan (ASN00076055): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Towan Thresholds

  • Towan: days with 10 mm (0.39 in) or more of precipitation in 58 years, most in 1917 with 18.
  • Towan: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1911 with 6.
  • Towan: days with 50 mm (1.97 in) or more of precipitation in 7 years, most in 1956 with 2.
  • 3 fixed thresholds have at least one qualifying day at Towan.
58 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Towan Days per year at Towan with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1917. 051015201905: 81906: 171907: 61908: 71909: 101910: 121911: 131912: 61913: 101914: 61915: 81917: 181918: 121919: 61920: 141921: 111922: 31923: 51924: 111925: 41926: 91927: 21928: 51929: 51930: 111931: 141932: 111933: 61934: 61935: 41936: 91937: 81938: 11939: 81940: 21941: 61942: 61943: 41944: 51945: 71947: 121948: 81949: 101950: 161951: 81952: 111953: 81954: 121955: 141956: 141957: 81958: 91959: 81960: 141961: 131962: 51963: 161964: 111905191119181924193019361942194919551961
Days per year at Towan with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1917.
Days with 10 mm (0.39 in) or more of precipitation per year at Towan
YearDaysDecade average
190589.6
1906179.6
190769.6
190879.6
1909109.6
19101210.1
19111310.1
1912610.1
19131010.1
1914610.1
1915810.1
19171810.1
19181210.1
1919610.1
1920146.9
1921116.9
192236.9
192356.9
1924116.9
192546.9
192696.9
192726.9
192856.9
192956.9
1930117.8
1931147.8
1932117.8
193367.8
193467.8
193547.8
193697.8
193787.8
193817.8
193987.8
194026.7
194166.7
194266.7
194346.7
194456.7
194576.7
1947126.7
194886.7
1949106.7
19501610.8
1951810.8
19521110.8
1953810.8
19541210.8
19551410.8
19561410.8
1957810.8
1958910.8
1959810.8
19601411.8
19611311.8
1962511.8
19631611.8
19641111.8
First to last qualifying date each year at Towan For each year, a bar from the first to the last day at Towan meeting 10 mm (0.39 in). 1905: 3 January 1905 to 9 July 19051906: 28 February 1906 to 14 December 19061907: 6 April 1907 to 27 December 19071908: 8 January 1908 to 5 September 19081909: 7 March 1909 to 19 November 19091910: 12 January 1910 to 5 November 19101911: 31 January 1911 to 30 November 19111912: 10 June 1912 to 3 November 19121913: 26 March 1913 to 23 December 19131914: 25 March 1914 to 21 December 19141915: 11 April 1915 to 24 September 19151917: 21 February 1917 to 22 November 19171918: 19 February 1918 to 21 August 19181919: 18 February 1919 to 25 December 19191920: 11 May 1920 to 27 December 19201921: 2 January 1921 to 23 December 19211922: 25 April 1922 to 5 December 19221923: 4 June 1923 to 21 December 19231924: 3 January 1924 to 15 December 19241925: 13 January 1925 to 22 August 19251926: 21 March 1926 to 27 December 19261927: 8 July 1927 to 20 October 19271928: 18 January 1928 to 30 September 19281929: 16 February 1929 to 27 December 19291930: 12 March 1930 to 16 December 19301931: 19 March 1931 to 17 November 19311932: 9 February 1932 to 16 December 19321933: 24 January 1933 to 5 December 19331934: 23 February 1934 to 25 October 19341935: 5 January 1935 to 21 October 19351936: 7 January 1936 to 26 July 19361937: 18 January 1937 to 28 December 19371938: 15 January 1938 to 15 January 19381939: 26 February 1939 to 16 November 19391940: 10 July 1940 to 27 September 19401941: 4 January 1941 to 5 November 19411942: 9 June 1942 to 22 November 19421943: 14 April 1943 to 10 October 19431944: 9 April 1944 to 13 December 19441945: 16 June 1945 to 27 December 19451947: 8 February 1947 to 23 December 19471948: 15 February 1948 to 26 December 19481949: 31 January 1949 to 10 October 19491950: 3 February 1950 to 17 October 19501951: 7 January 1951 to 8 August 19511952: 24 January 1952 to 22 October 19521953: 6 February 1953 to 4 November 19531954: 17 January 1954 to 3 December 19541955: 5 February 1955 to 3 December 19551956: 19 January 1956 to 10 November 19561957: 7 February 1957 to 23 October 19571958: 14 May 1958 to 16 December 19581959: 26 January 1959 to 25 December 19591960: 4 January 1960 to 21 November 19601961: 1 January 1961 to 14 December 19611962: 17 January 1962 to 28 December 19621963: 13 January 1963 to 9 December 19631964: 8 January 1964 to 19 November 196419051913192219301938194719551963JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Towan meeting 10 mm (0.39 in).
First to last qualifying date each year at Towan
YearFirst dateLast date
19051905-01-031905-07-09
19061906-02-281906-12-14
19071907-04-061907-12-27
19081908-01-081908-09-05
19091909-03-071909-11-19
19101910-01-121910-11-05
19111911-01-311911-11-30
19121912-06-101912-11-03
19131913-03-261913-12-23
19141914-03-251914-12-21
19151915-04-111915-09-24
19171917-02-211917-11-22
19181918-02-191918-08-21
19191919-02-181919-12-25
19201920-05-111920-12-27
19211921-01-021921-12-23
19221922-04-251922-12-05
19231923-06-041923-12-21
19241924-01-031924-12-15
19251925-01-131925-08-22
19261926-03-211926-12-27
19271927-07-081927-10-20
19281928-01-181928-09-30
19291929-02-161929-12-27
19301930-03-121930-12-16
19311931-03-191931-11-17
19321932-02-091932-12-16
19331933-01-241933-12-05
19341934-02-231934-10-25
19351935-01-051935-10-21
19361936-01-071936-07-26
19371937-01-181937-12-28
19381938-01-151938-01-15
19391939-02-261939-11-16
19401940-07-101940-09-27
19411941-01-041941-11-05
19421942-06-091942-11-22
19431943-04-141943-10-10
19441944-04-091944-12-13
19451945-06-161945-12-27
19471947-02-081947-12-23
19481948-02-151948-12-26
19491949-01-311949-10-10
19501950-02-031950-10-17
19511951-01-071951-08-08
19521952-01-241952-10-22
19531953-02-061953-11-04
19541954-01-171954-12-03
19551955-02-051955-12-03
19561956-01-191956-11-10
19571957-02-071957-10-23
19581958-05-141958-12-16
19591959-01-261959-12-25
19601960-01-041960-11-21
19611961-01-011961-12-14
19621962-01-171962-12-28
19631963-01-131963-12-09
19641964-01-081964-11-19

Every Fixed Threshold

Fixed thresholds at Towan
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain5818191711
25 mm (0.98 in): Days with 25 mm or more rain44619113
50 mm (1.97 in): Days with 50 mm or more rain7219561

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1905.

Download the Data

  • Data for Towan 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).