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Built 2026-10-19 (19 October 2026)

Days with 50 mm (1.97 in) or more of precipitation in Seattle

Seattle has had days with 50 mm (1.97 in) or more of precipitation in 28 years, most in 1986 with 3. Days per year, season span, streaks and every date.

Key Facts for Seattle

  • Seattle has had days with 50 mm (1.97 in) or more of precipitation in 28 years, 38 days in all.
  • The most in one year was 3 days in 1986.
  • In 2023, the latest year on file, there were 1 such days.
  • The earliest first date in a year was 6 January 2022.
  • The latest last date in a year was 26 December 1974.
  • 1 year with under 90 percent of days observed is left out of these rankings.

Days per Year

28 years, 38 days
Days with 50 mm (1.97 in) or more of precipitation per year in Seattle Days per year in Seattle with 50 mm (1.97 in) or more of precipitation. The line is the decade average. The most was 3 in 1986. Grey bars are years with under 90 percent of days observed, left out of rankings. 01231948: 11950: 11951: 11955: 21959: 11967: 11972: 21974: 11981: 11986: 31990: 31991: 11996: 11998: 12001: 12003: 22005: 12006: 12007: 12008: 12009: 12010: 12012: 12015: 22019: 12021: 22022: 22023: 1194819902009
Days per year in Seattle with 50 mm (1.97 in) or more of precipitation. The line is the decade average. The most was 3 in 1986. Grey bars are years with under 90 percent of days observed, left out of rankings.
Days with 50 mm (1.97 in) or more of precipitation per year in Seattle
YearDaysDecade average
194811
195011.3
195111.3
195521.3
195911.3
196711
197221.5
197411.5
198112
198632
199031.5
199111.5
199611.5
199811.5
200111.1
200321.1
200511.1
200611.1
200711.1
200811.1
200911.1
201011.3
201211.3
201521.3
201911.3
202121.7
202221.7
202311.7

Season Span

earliest 6 January, latest 26 December
First to last qualifying date each year in Seattle For each year, a bar from the first to the last day in Seattle meeting 50 mm (1.97 in). Long bars mean a long season. 1948: 21 March 1948 to 21 March 19481950: 3 March 1950 to 3 March 19501951: 9 February 1951 to 9 February 19511955: 7 February 1955 to 2 November 19551959: 20 November 1959 to 20 November 19591967: 19 January 1967 to 19 January 19671972: 27 February 1972 to 5 March 19721974: 26 December 1974 to 26 December 19741981: 6 October 1981 to 6 October 19811986: 18 January 1986 to 23 November 19861990: 9 January 1990 to 24 November 19901991: 4 April 1991 to 4 April 19911996: 8 February 1996 to 8 February 19961998: 25 November 1998 to 25 November 19982001: 14 November 2001 to 14 November 20012003: 20 October 2003 to 18 November 20032005: 17 January 2005 to 17 January 20052006: 6 November 2006 to 6 November 20062007: 3 December 2007 to 3 December 20072008: 6 November 2008 to 6 November 20082009: 7 January 2009 to 7 January 20092010: 12 December 2010 to 12 December 20102012: 19 November 2012 to 19 November 20122015: 15 March 2015 to 8 December 20152019: 20 December 2019 to 20 December 20192021: 12 January 2021 to 28 October 20212022: 6 January 2022 to 28 February 20222023: 5 December 2023 to 5 December 20231948195919811996200520092019JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day in Seattle meeting 50 mm (1.97 in). Long bars mean a long season.
First to last qualifying date each year in Seattle
YearFirst dateLast date
19481948-03-211948-03-21
19501950-03-031950-03-03
19511951-02-091951-02-09
19551955-02-071955-11-02
19591959-11-201959-11-20
19671967-01-191967-01-19
19721972-02-271972-03-05
19741974-12-261974-12-26
19811981-10-061981-10-06
19861986-01-181986-11-23
19901990-01-091990-11-24
19911991-04-041991-04-04
19961996-02-081996-02-08
19981998-11-251998-11-25
20012001-11-142001-11-14
20032003-10-202003-11-18
20052005-01-172005-01-17
20062006-11-062006-11-06
20072007-12-032007-12-03
20082008-11-062008-11-06
20092009-01-072009-01-07
20102010-12-122010-12-12
20122012-11-192012-11-19
20152015-03-152015-12-08
20192019-12-202019-12-20
20212021-01-122021-10-28
20222022-01-062022-02-28
20232023-12-052023-12-05

Every Year

Days with 50 mm (1.97 in) or more of precipitation per year in Seattle
YearDaysFirst dateLast dateLongest streak in yearCoverage
202315 December 20235 December 20231 daysComplete
202226 January 202228 February 20221 daysComplete
2021212 January 202128 October 20211 daysComplete
2019120 December 201920 December 20191 daysComplete
2015215 March 20158 December 20151 daysComplete
2012119 November 201219 November 20121 daysComplete
2010112 December 201012 December 20101 daysComplete
200917 January 20097 January 20091 daysComplete
200816 November 20086 November 20081 daysComplete
200713 December 20073 December 20071 daysComplete
200616 November 20066 November 20061 daysComplete
2005117 January 200517 January 20051 daysComplete
2003220 October 200318 November 20031 daysComplete
2001114 November 200114 November 20011 daysComplete
1998125 November 199825 November 19981 daysComplete
199618 February 19968 February 19961 daysComplete
199114 April 19914 April 19911 daysComplete
199039 January 199024 November 19901 daysComplete
1986318 January 198623 November 19861 daysComplete
198116 October 19816 October 19811 daysComplete
1974126 December 197426 December 19741 daysComplete
1972227 February 19725 March 19721 daysComplete
1967119 January 196719 January 19671 daysComplete
1959120 November 195920 November 19591 daysComplete
195527 February 19552 November 19551 daysComplete
195119 February 19519 February 19511 daysComplete
195013 March 19503 March 19501 daysComplete
1948121 March 194821 March 19481 daysComplete
Decade averages for Days with 50 mm (1.97 in) or more of precipitation in Seattle
DecadeAverage days per yearYears counted
1940s1.01
1950s1.34
1960s1.01
1970s1.52
1980s2.02
1990s1.54
2000s1.17
2010s1.34
2020s1.73

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 50 mm (1.97 in) or more of precipitation in Seattle, 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 2026-10-18 (18 October 2026). Threshold counts are computed by this site from the threaded city record.

Data as of . Last revised (2026-10-18).