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

Hendon Threshold Days by Year (ASN00041148)

4 fixed thresholds counted per year at Hendon (ASN00041148): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hendon Thresholds

  • Hendon: days with 10 mm (0.39 in) or more of precipitation in 20 years, most in 1905 with 30.
  • Hendon: days with 25 mm (0.98 in) or more of precipitation in 20 years, most in 1906 with 12.
  • Hendon: days with 50 mm (1.97 in) or more of precipitation in 12 years, most in 1900 with 3.
  • Hendon: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1919 with 1.
  • 4 fixed thresholds have at least one qualifying day at Hendon.
20 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Hendon Days per year at Hendon with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 30 in 1905. 01020301899: 181900: 221901: 221904: 201905: 301906: 291907: 231908: 221911: 161912: 261913: 171914: 201915: 121916: 301918: 161919: 71920: 231922: 171923: 161926: 151899190119051907191119131915191819201923
Days per year at Hendon with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 30 in 1905.
Days with 10 mm (0.39 in) or more of precipitation per year at Hendon
YearDaysDecade average
18991818
19002224
19012224
19042024
19053024
19062924
19072324
19082224
19111618
19122618
19131718
19142018
19151218
19163018
19181618
1919718
19202317.8
19221717.8
19231617.8
19261517.8
First to last qualifying date each year at Hendon For each year, a bar from the first to the last day at Hendon meeting 10 mm (0.39 in). 1899: 11 January 1899 to 27 December 18991900: 8 January 1900 to 1 December 19001901: 14 January 1901 to 18 December 19011904: 21 January 1904 to 6 December 19041905: 15 January 1905 to 28 December 19051906: 9 January 1906 to 25 December 19061907: 3 January 1907 to 19 December 19071908: 12 February 1908 to 14 December 19081911: 9 January 1911 to 31 December 19111912: 6 January 1912 to 31 December 19121913: 1 January 1913 to 13 December 19131914: 11 January 1914 to 31 December 19141915: 2 January 1915 to 17 December 19151916: 1 February 1916 to 14 December 19161918: 2 January 1918 to 15 December 19181919: 19 February 1919 to 26 August 19191920: 19 January 1920 to 9 December 19201922: 13 January 1922 to 26 December 19221923: 4 January 1923 to 26 December 19231926: 3 January 1926 to 29 December 19261899190419071912191519191923JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hendon meeting 10 mm (0.39 in).
First to last qualifying date each year at Hendon
YearFirst dateLast date
18991899-01-111899-12-27
19001900-01-081900-12-01
19011901-01-141901-12-18
19041904-01-211904-12-06
19051905-01-151905-12-28
19061906-01-091906-12-25
19071907-01-031907-12-19
19081908-02-121908-12-14
19111911-01-091911-12-31
19121912-01-061912-12-31
19131913-01-011913-12-13
19141914-01-111914-12-31
19151915-01-021915-12-17
19161916-02-011916-12-14
19181918-01-021918-12-15
19191919-02-191919-08-26
19201920-01-191920-12-09
19221922-01-131922-12-26
19231923-01-041923-12-26
19261926-01-031926-12-29

Every Fixed Threshold

Fixed thresholds at Hendon
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2030190515
25 mm (0.98 in): Days with 25 mm or more rain201219064
50 mm (1.97 in): Days with 50 mm or more rain12319001
100 mm (3.94 in): Days with 100 mm or more rain1119191

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1899.

Download the Data

  • Data for Hendon 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).