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Built 2026-10-18 (18 October 2026)

Mount Seymour (Overton) Threshold Days by Year

3 fixed thresholds counted per year at Mount Seymour (Overton) (ASN00093012): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mount Seymour (Overton) Thresholds

  • Mount Seymour (Overton): days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 1916 with 28.
  • Mount Seymour (Overton): days with 25 mm (0.98 in) or more of precipitation in 36 years, most in 1916 with 9.
  • Mount Seymour (Overton): days with 50 mm (1.97 in) or more of precipitation in 11 years, most in 1916 with 3.
  • 3 fixed thresholds have at least one qualifying day at Mount Seymour (Overton).
40 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Mount Seymour (Overton) Days per year at Mount Seymour (Overton) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 28 in 1916. 01020301907: 131908: 91909: 191910: 131911: 141912: 181913: 111914: 111915: 121916: 281918: 211919: 131920: 111921: 111922: 181923: 161924: 171925: 121926: 111927: 111928: 111929: 181930: 181931: 201932: 281933: 81934: 151935: 181936: 61937: 201938: 151939: 161940: 61941: 141942: 111943: 131944: 141945: 101969: 201970: 221907191119151920192419281932193619401944
Days per year at Mount Seymour (Overton) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 28 in 1916.
Days with 10 mm (0.39 in) or more of precipitation per year at Mount Seymour (Overton)
YearDaysDecade average
19071313.7
1908913.7
19091913.7
19101315.7
19111415.7
19121815.7
19131115.7
19141115.7
19151215.7
19162815.7
19182115.7
19191315.7
19201113.6
19211113.6
19221813.6
19231613.6
19241713.6
19251213.6
19261113.6
19271113.6
19281113.6
19291813.6
19301816.4
19312016.4
19322816.4
1933816.4
19341516.4
19351816.4
1936616.4
19372016.4
19381516.4
19391616.4
1940611.3
19411411.3
19421111.3
19431311.3
19441411.3
19451011.3
19692020
19702222
First to last qualifying date each year at Mount Seymour (Overton) For each year, a bar from the first to the last day at Mount Seymour (Overton) meeting 10 mm (0.39 in). 1907: 20 January 1907 to 30 October 19071908: 9 January 1908 to 10 October 19081909: 2 January 1909 to 22 December 19091910: 10 January 1910 to 2 December 19101911: 14 February 1911 to 19 December 19111912: 17 January 1912 to 23 December 19121913: 3 January 1913 to 26 December 19131914: 13 March 1914 to 27 December 19141915: 21 February 1915 to 15 November 19151916: 9 January 1916 to 30 December 19161918: 7 January 1918 to 13 October 19181919: 7 January 1919 to 8 October 19191920: 8 January 1920 to 17 December 19201921: 2 January 1921 to 28 November 19211922: 25 January 1922 to 24 December 19221923: 5 January 1923 to 7 December 19231924: 12 January 1924 to 25 November 19241925: 3 March 1925 to 18 November 19251926: 19 January 1926 to 16 October 19261927: 20 February 1927 to 19 December 19271928: 2 January 1928 to 15 December 19281929: 26 January 1929 to 29 December 19291930: 19 February 1930 to 25 December 19301931: 15 February 1931 to 20 November 19311932: 10 January 1932 to 24 December 19321933: 30 March 1933 to 30 November 19331934: 9 January 1934 to 31 December 19341935: 3 January 1935 to 25 December 19351936: 22 January 1936 to 20 December 19361937: 2 January 1937 to 26 December 19371938: 4 January 1938 to 23 December 19381939: 17 February 1939 to 21 November 19391940: 4 January 1940 to 28 December 19401941: 4 January 1941 to 6 December 19411942: 20 January 1942 to 24 December 19421943: 4 January 1943 to 4 December 19431944: 3 January 1944 to 24 December 19441945: 16 January 1945 to 28 December 19451969: 15 January 1969 to 14 December 19691970: 3 January 1970 to 31 December 197019071912191819231928193319381943JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mount Seymour (Overton) meeting 10 mm (0.39 in).
First to last qualifying date each year at Mount Seymour (Overton)
YearFirst dateLast date
19071907-01-201907-10-30
19081908-01-091908-10-10
19091909-01-021909-12-22
19101910-01-101910-12-02
19111911-02-141911-12-19
19121912-01-171912-12-23
19131913-01-031913-12-26
19141914-03-131914-12-27
19151915-02-211915-11-15
19161916-01-091916-12-30
19181918-01-071918-10-13
19191919-01-071919-10-08
19201920-01-081920-12-17
19211921-01-021921-11-28
19221922-01-251922-12-24
19231923-01-051923-12-07
19241924-01-121924-11-25
19251925-03-031925-11-18
19261926-01-191926-10-16
19271927-02-201927-12-19
19281928-01-021928-12-15
19291929-01-261929-12-29
19301930-02-191930-12-25
19311931-02-151931-11-20
19321932-01-101932-12-24
19331933-03-301933-11-30
19341934-01-091934-12-31
19351935-01-031935-12-25
19361936-01-221936-12-20
19371937-01-021937-12-26
19381938-01-041938-12-23
19391939-02-171939-11-21
19401940-01-041940-12-28
19411941-01-041941-12-06
19421942-01-201942-12-24
19431943-01-041943-12-04
19441944-01-031944-12-24
19451945-01-161945-12-28
19691969-01-151969-12-14
19701970-01-031970-12-31

Every Fixed Threshold

Fixed thresholds at Mount Seymour (Overton)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4028191622
25 mm (0.98 in): Days with 25 mm or more rain36919168
50 mm (1.97 in): Days with 50 mm or more rain11319162

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 Mount Seymour (Overton) 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).