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Data as of 2025-12-31
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Built 2026-10-16 (16 October 2026)

Ellerslie Threshold Days by Year

3 fixed thresholds counted per year at Ellerslie (ASN00072016): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ellerslie Thresholds

  • Ellerslie: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 1916 with 40.
  • Ellerslie: days with 25 mm (0.98 in) or more of precipitation in 36 years, most in 1931 with 15.
  • Ellerslie: days with 50 mm (1.97 in) or more of precipitation in 20 years, most in 1931 with 3.
  • 3 fixed thresholds have at least one qualifying day at Ellerslie.
36 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Ellerslie Days per year at Ellerslie with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 40 in 1916. 0102030401912: 201913: 271914: 111915: 261916: 401917: 371918: 201919: 221920: 331921: 291922: 281923: 311924: 311925: 211926: 351927: 181928: 241929: 161930: 251931: 331932: 281933: 261934: 351935: 221936: 271937: 221938: 191939: 361940: 161941: 221942: 341943: 241944: 121945: 201946: 351947: 31191219161920192419281932193619401944
Days per year at Ellerslie with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 40 in 1916.
Days with 10 mm (0.39 in) or more of precipitation per year at Ellerslie
YearDaysDecade average
19122025.4
19132725.4
19141125.4
19152625.4
19164025.4
19173725.4
19182025.4
19192225.4
19203326.6
19212926.6
19222826.6
19233126.6
19243126.6
19252126.6
19263526.6
19271826.6
19282426.6
19291626.6
19302527.3
19313327.3
19322827.3
19332627.3
19343527.3
19352227.3
19362727.3
19372227.3
19381927.3
19393627.3
19401624.3
19412224.3
19423424.3
19432424.3
19441224.3
19452024.3
19463524.3
19473124.3
First to last qualifying date each year at Ellerslie For each year, a bar from the first to the last day at Ellerslie meeting 10 mm (0.39 in). 1912: 8 February 1912 to 27 December 19121913: 2 January 1913 to 31 December 19131914: 1 February 1914 to 28 December 19141915: 20 February 1915 to 15 December 19151916: 29 January 1916 to 9 December 19161917: 2 January 1917 to 31 December 19171918: 9 January 1918 to 24 December 19181919: 18 February 1919 to 28 December 19191920: 15 January 1920 to 17 December 19201921: 3 January 1921 to 27 December 19211922: 8 January 1922 to 9 October 19221923: 25 January 1923 to 18 December 19231924: 3 January 1924 to 15 December 19241925: 14 January 1925 to 30 December 19251926: 6 January 1926 to 18 December 19261927: 6 January 1927 to 12 December 19271928: 18 January 1928 to 23 October 19281929: 15 February 1929 to 28 December 19291930: 24 January 1930 to 25 December 19301931: 2 January 1931 to 16 November 19311932: 6 February 1932 to 13 December 19321933: 30 March 1933 to 15 December 19331934: 7 January 1934 to 1 December 19341935: 13 January 1935 to 3 December 19351936: 5 January 1936 to 19 December 19361937: 12 January 1937 to 28 December 19371938: 27 January 1938 to 28 November 19381939: 20 January 1939 to 21 November 19391940: 6 January 1940 to 29 December 19401941: 1 January 1941 to 1 December 19411942: 20 January 1942 to 22 November 19421943: 3 January 1943 to 20 November 19431944: 10 March 1944 to 13 December 19441945: 31 January 1945 to 11 November 19451946: 18 January 1946 to 29 December 19461947: 9 February 1947 to 25 December 194719121917192219271932193719421947JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ellerslie meeting 10 mm (0.39 in).
First to last qualifying date each year at Ellerslie
YearFirst dateLast date
19121912-02-081912-12-27
19131913-01-021913-12-31
19141914-02-011914-12-28
19151915-02-201915-12-15
19161916-01-291916-12-09
19171917-01-021917-12-31
19181918-01-091918-12-24
19191919-02-181919-12-28
19201920-01-151920-12-17
19211921-01-031921-12-27
19221922-01-081922-10-09
19231923-01-251923-12-18
19241924-01-031924-12-15
19251925-01-141925-12-30
19261926-01-061926-12-18
19271927-01-061927-12-12
19281928-01-181928-10-23
19291929-02-151929-12-28
19301930-01-241930-12-25
19311931-01-021931-11-16
19321932-02-061932-12-13
19331933-03-301933-12-15
19341934-01-071934-12-01
19351935-01-131935-12-03
19361936-01-051936-12-19
19371937-01-121937-12-28
19381938-01-271938-11-28
19391939-01-201939-11-21
19401940-01-061940-12-29
19411941-01-011941-12-01
19421942-01-201942-11-22
19431943-01-031943-11-20
19441944-03-101944-12-13
19451945-01-311945-11-11
19461946-01-181946-12-29
19471947-02-091947-12-25

Every Fixed Threshold

Fixed thresholds at Ellerslie
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3640191631
25 mm (0.98 in): Days with 25 mm or more rain3615193112
50 mm (1.97 in): Days with 50 mm or more rain20319312

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1912.

Download the Data

  • Data for Ellerslie 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).