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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Dorset Downs Threshold Days by Year

3 fixed thresholds counted per year at Dorset Downs (ASN00009536): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dorset Downs Thresholds

  • Dorset Downs: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1926 with 30.
  • Dorset Downs: days with 25 mm (0.98 in) or more of precipitation in 19 years, most in 1927 with 5.
  • Dorset Downs: days with 50 mm (1.97 in) or more of precipitation in 3 years, most in 1919 with 1.
  • 3 fixed thresholds have at least one qualifying day at Dorset Downs.
21 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Dorset Downs Days per year at Dorset Downs with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 30 in 1926. 01020301918: 231919: 151920: 191921: 191922: 211923: 291924: 141925: 151926: 301927: 241928: 191929: 211930: 131931: 171932: 201933: 291934: 191935: 171939: 261943: 181944: 141918192119241927193019331939
Days per year at Dorset Downs with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 30 in 1926.
Days with 10 mm (0.39 in) or more of precipitation per year at Dorset Downs
YearDaysDecade average
19182319
19191519
19201921.1
19211921.1
19222121.1
19232921.1
19241421.1
19251521.1
19263021.1
19272421.1
19281921.1
19292121.1
19301320.1
19311720.1
19322020.1
19332920.1
19341920.1
19351720.1
19392620.1
19431816
19441416
First to last qualifying date each year at Dorset Downs For each year, a bar from the first to the last day at Dorset Downs meeting 10 mm (0.39 in). 1918: 20 January 1918 to 28 November 19181919: 24 March 1919 to 15 October 19191920: 22 February 1920 to 10 October 19201921: 19 February 1921 to 10 December 19211922: 18 February 1922 to 29 November 19221923: 19 January 1923 to 3 October 19231924: 14 May 1924 to 10 November 19241925: 7 March 1925 to 11 October 19251926: 15 January 1926 to 19 November 19261927: 13 March 1927 to 7 October 19271928: 9 January 1928 to 28 September 19281929: 7 February 1929 to 25 December 19291930: 27 May 1930 to 29 September 19301931: 6 March 1931 to 12 November 19311932: 29 January 1932 to 29 October 19321933: 8 January 1933 to 19 October 19331934: 4 March 1934 to 5 December 19341935: 2 April 1935 to 25 October 19351939: 19 January 1939 to 17 November 19391943: 31 January 1943 to 8 December 19431944: 30 April 1944 to 29 August 19441918192119241927193019331939JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Dorset Downs meeting 10 mm (0.39 in).
First to last qualifying date each year at Dorset Downs
YearFirst dateLast date
19181918-01-201918-11-28
19191919-03-241919-10-15
19201920-02-221920-10-10
19211921-02-191921-12-10
19221922-02-181922-11-29
19231923-01-191923-10-03
19241924-05-141924-11-10
19251925-03-071925-10-11
19261926-01-151926-11-19
19271927-03-131927-10-07
19281928-01-091928-09-28
19291929-02-071929-12-25
19301930-05-271930-09-29
19311931-03-061931-11-12
19321932-01-291932-10-29
19331933-01-081933-10-19
19341934-03-041934-12-05
19351935-04-021935-10-25
19391939-01-191939-11-17
19431943-01-311943-12-08
19441944-04-301944-08-29

Every Fixed Threshold

Fixed thresholds at Dorset Downs
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2130192614
25 mm (0.98 in): Days with 25 mm or more rain19519271
50 mm (1.97 in): Days with 50 mm or more rain3119191

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1918.

Download the Data

  • Data for Dorset Downs 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

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