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Built 2026-10-19 (19 October 2026)

Days with 100 mm (3.94 in) or more of precipitation in Los Angeles

Los Angeles has had days with 100 mm (3.94 in) or more of precipitation in 8 years, most in 1913 with 1. Days per year, season span, streaks and every date.

Key Facts for Los Angeles

  • Los Angeles has had days with 100 mm (3.94 in) or more of precipitation in 8 years, 8 days in all.
  • The most in one year was 1 days in 1913.
  • In 2024, the latest year on file, there were 1 such days.
  • The earliest first date in a year was 26 January 1956.
  • The latest last date in a year was 31 December 1933.
  • 5 years with under 90 percent of days observed are left out of these rankings.

Days per Year

8 years, 8 days
Days with 100 mm (3.94 in) or more of precipitation per year in Los Angeles Days per year in Los Angeles with 100 mm (3.94 in) or more of precipitation. The line is the decade average. The most was 1 in 1913. Grey bars are years with under 90 percent of days observed, left out of rankings. 001111913: 11933: 11938: 11939: 11956: 12003: 12004: 12024: 11913
Days per year in Los Angeles with 100 mm (3.94 in) or more of precipitation. The line is the decade average. The most was 1 in 1913. Grey bars are years with under 90 percent of days observed, left out of rankings.
Days with 100 mm (3.94 in) or more of precipitation per year in Los Angeles
YearDaysDecade average
191311
193311
193811
193911
195611
200311
200411
202411

Season Span

earliest 26 January, latest 31 December
First to last qualifying date each year in Los Angeles For each year, a bar from the first to the last day in Los Angeles meeting 100 mm (3.94 in). Long bars mean a long season. 1913: 24 February 1913 to 24 February 19131933: 31 December 1933 to 31 December 19331938: 2 March 1938 to 2 March 19381939: 25 September 1939 to 25 September 19391956: 26 January 1956 to 26 January 19562003: 15 March 2003 to 15 March 20032004: 28 December 2004 to 28 December 20042024: 4 February 2024 to 4 February 202419131933193819391956200320042024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day in Los Angeles meeting 100 mm (3.94 in). Long bars mean a long season.
First to last qualifying date each year in Los Angeles
YearFirst dateLast date
19131913-02-241913-02-24
19331933-12-311933-12-31
19381938-03-021938-03-02
19391939-09-251939-09-25
19561956-01-261956-01-26
20032003-03-152003-03-15
20042004-12-282004-12-28
20242024-02-042024-02-04

Every Year

Days with 100 mm (3.94 in) or more of precipitation per year in Los Angeles
YearDaysFirst dateLast dateLongest streak in yearCoverage
202414 February 20244 February 20241 daysComplete
2004128 December 200428 December 20041 daysComplete
2003115 March 200315 March 20031 daysComplete
1956126 January 195626 January 19561 daysComplete
1939125 September 193925 September 19391 daysComplete
193812 March 19382 March 19381 daysComplete
1933131 December 193331 December 19331 daysComplete
1913124 February 191324 February 19131 daysComplete
Decade averages for Days with 100 mm (3.94 in) or more of precipitation in Los Angeles
DecadeAverage days per yearYears counted
1910s1.01
1930s1.03
1950s1.01
2000s1.02
2020s1.01

Compare with your own threshold in the threshold explorer. Fahrenheit thresholds are converted to tenths of a degree Celsius once, rounding half up.

Download the Data

  • Data for Days with 100 mm (3.94 in) or more of precipitation in Los Angeles, 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 from the threaded city record.

Data as of . Last revised (2026-10-17).