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Built 2026-10-19 (19 October 2026)

Santa Margarita Threshold Days by Year (USC00027583)

5 fixed thresholds counted per year at Santa Margarita (USC00027583): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Santa Margarita Thresholds

  • Santa Margarita: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1931 with 26.
  • Santa Margarita: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1926 with 8.
  • Santa Margarita: days with 50 mm (1.97 in) or more of precipitation in 13 years, most in 1926 with 2.
  • Santa Margarita: days with 10 cm (3.9 in) or more of snowfall in 2 years, most in 1922 with 1.
  • 5 fixed thresholds have at least one qualifying day at Santa Margarita.
31 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Santa Margarita Days per year at Santa Margarita with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 26 in 1931. 01020301919: 251920: 121921: 151922: 191923: 191924: 111925: 161926: 221927: 181928: 81929: 131930: 161931: 261932: 221933: 131934: 131935: 221936: 161937: 141938: 111939: 121940: 131941: 181942: 151943: 91944: 231946: 191947: 91948: 121949: 141950: 619191923192719311935193919431948
Days per year at Santa Margarita with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 26 in 1931.
Days with 10 mm (0.39 in) or more of precipitation per year at Santa Margarita
YearDaysDecade average
19192525
19201215.3
19211515.3
19221915.3
19231915.3
19241115.3
19251615.3
19262215.3
19271815.3
1928815.3
19291315.3
19301616.5
19312616.5
19322216.5
19331316.5
19341316.5
19352216.5
19361616.5
19371416.5
19381116.5
19391216.5
19401314.7
19411814.7
19421514.7
1943914.7
19442314.7
19461914.7
1947914.7
19481214.7
19491414.7
195066
First to last qualifying date each year at Santa Margarita For each year, a bar from the first to the last day at Santa Margarita meeting 10 mm (0.39 in). 1919: 31 January 1919 to 18 December 19191920: 4 January 1920 to 20 October 19201921: 9 July 1921 to 31 December 19211922: 2 January 1922 to 30 November 19221923: 1 February 1923 to 9 December 19231924: 18 March 1924 to 17 December 19241925: 21 April 1925 to 30 November 19251926: 8 January 1926 to 25 December 19261927: 11 February 1927 to 27 December 19271928: 15 February 1928 to 12 December 19281929: 17 January 1929 to 22 September 19291930: 6 January 1930 to 21 November 19301931: 4 January 1931 to 8 December 19311932: 13 January 1932 to 15 December 19321933: 16 January 1933 to 30 November 19331934: 24 March 1934 to 28 December 19341935: 5 January 1935 to 20 December 19351936: 28 January 1936 to 28 December 19361937: 7 January 1937 to 11 December 19371938: 20 January 1938 to 19 December 19381939: 6 January 1939 to 23 November 19391940: 1 February 1940 to 31 December 19401941: 10 January 1941 to 11 December 19411942: 2 January 1942 to 29 October 19421943: 27 January 1943 to 27 December 19431944: 24 January 1944 to 25 December 19441946: 3 January 1946 to 27 December 19461947: 4 July 1947 to 22 November 19471948: 4 February 1948 to 25 December 19481949: 25 January 1949 to 20 December 19491950: 11 February 1950 to 25 August 195019191923192719311935193919431948JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Santa Margarita meeting 10 mm (0.39 in).
First to last qualifying date each year at Santa Margarita
YearFirst dateLast date
19191919-01-311919-12-18
19201920-01-041920-10-20
19211921-07-091921-12-31
19221922-01-021922-11-30
19231923-02-011923-12-09
19241924-03-181924-12-17
19251925-04-211925-11-30
19261926-01-081926-12-25
19271927-02-111927-12-27
19281928-02-151928-12-12
19291929-01-171929-09-22
19301930-01-061930-11-21
19311931-01-041931-12-08
19321932-01-131932-12-15
19331933-01-161933-11-30
19341934-03-241934-12-28
19351935-01-051935-12-20
19361936-01-281936-12-28
19371937-01-071937-12-11
19381938-01-201938-12-19
19391939-01-061939-11-23
19401940-02-011940-12-31
19411941-01-101941-12-11
19421942-01-021942-10-29
19431943-01-271943-12-27
19441944-01-241944-12-25
19461946-01-031946-12-27
19471947-07-041947-11-22
19481948-02-041948-12-25
19491949-01-251949-12-20
19501950-02-111950-08-25

Every Fixed Threshold

Fixed thresholds at Santa Margarita
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain312619316
25 mm (0.98 in): Days with 25 mm or more rain31819262
50 mm (1.97 in): Days with 50 mm or more rain13219261
100 mm (3.94 in): Days with 100 mm or more rain1119351
10 cm (3.9 in): Days with 10 cm or more snowfall2119221

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1919.

Download the Data

  • Data for Santa Margarita 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).