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Built 2026-10-19 (19 October 2026)

Seattle Sand Pt WFO Threshold Days by Year (USW00094290)

14 fixed thresholds counted per year at Seattle Sand Pt WFO (USW00094290): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Seattle Sand Pt WFO Thresholds

  • Seattle Sand Pt WFO: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 2015 with 20.
  • Seattle Sand Pt WFO: nights with a minimum temperature at or below 0 C (32 F) in 37 years, most in 1993 with 48.
  • Seattle Sand Pt WFO: days with 10 mm (0.39 in) or more of precipitation in 37 years, most in 2017 with 44.
  • Seattle Sand Pt WFO: days with 25 mm (0.98 in) or more of precipitation in 36 years, most in 2006 with 10.
  • 14 fixed thresholds have at least one qualifying day at Seattle Sand Pt WFO.
37 years with a qualifying day
Days at or above 30 C (86 F) per year at Seattle Sand Pt WFO Days per year at Seattle Sand Pt WFO with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 20 in 2015. 051015201987: 41988: 81990: 61991: 21992: 81993: 41994: 51995: 51996: 111997: 62000: 32001: 12002: 72003: 92004: 102005: 72006: 62007: 32008: 72009: 132010: 52011: 32012: 52013: 62014: 162015: 202016: 122017: 142018: 172019: 52020: 52021: 132022: 182023: 122024: 162025: 112026: 91987199219962002200620102014201820222026
Days per year at Seattle Sand Pt WFO with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 20 in 2015.
Days at or above 30 C (86 F) per year at Seattle Sand Pt WFO
YearDaysDecade average
198746
198886
199065.9
199125.9
199285.9
199345.9
199455.9
199555.9
1996115.9
199765.9
200036.6
200116.6
200276.6
200396.6
2004106.6
200576.6
200666.6
200736.6
200876.6
2009136.6
2010510.3
2011310.3
2012510.3
2013610.3
20141610.3
20152010.3
20161210.3
20171410.3
20181710.3
2019510.3
2020512
20211312
20221812
20231212
20241612
20251112
2026912
First to last qualifying date each year at Seattle Sand Pt WFO For each year, a bar from the first to the last day at Seattle Sand Pt WFO meeting 30 C (86 F). 1987: 29 June 1987 to 1 October 19871988: 19 July 1988 to 3 September 19881990: 4 August 1990 to 22 September 19901991: 23 July 1991 to 8 August 19911992: 22 June 1992 to 13 August 19921993: 3 August 1993 to 7 September 19931994: 20 July 1994 to 22 September 19941995: 29 June 1995 to 22 July 19951996: 13 July 1996 to 29 August 19961997: 4 July 1997 to 24 September 19972000: 27 June 2000 to 14 September 20002001: 9 August 2001 to 9 August 20012002: 13 June 2002 to 28 August 20022003: 7 June 2003 to 4 September 20032004: 19 June 2004 to 11 August 20042005: 26 May 2005 to 15 August 20052006: 26 June 2006 to 2 September 20062007: 3 June 2007 to 11 July 20072008: 17 May 2008 to 17 August 20082009: 5 July 2009 to 19 August 20092010: 8 July 2010 to 17 August 20102011: 21 August 2011 to 11 September 20112012: 4 August 2012 to 7 September 20122013: 28 June 2013 to 11 September 20132014: 1 May 2014 to 15 September 20142015: 25 June 2015 to 19 August 20152016: 18 April 2016 to 26 August 20162017: 24 June 2017 to 28 September 20172018: 18 June 2018 to 22 August 20182019: 12 June 2019 to 28 August 20192020: 27 July 2020 to 10 September 20202021: 25 June 2021 to 13 August 20212022: 26 June 2022 to 16 October 20222023: 5 July 2023 to 2 September 20232024: 11 May 2024 to 6 September 20242025: 8 June 2025 to 16 September 20252026: 2 June 2026 to 25 August 202619871993200020052010201520202025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Seattle Sand Pt WFO meeting 30 C (86 F).
First to last qualifying date each year at Seattle Sand Pt WFO
YearFirst dateLast date
19871987-06-291987-10-01
19881988-07-191988-09-03
19901990-08-041990-09-22
19911991-07-231991-08-08
19921992-06-221992-08-13
19931993-08-031993-09-07
19941994-07-201994-09-22
19951995-06-291995-07-22
19961996-07-131996-08-29
19971997-07-041997-09-24
20002000-06-272000-09-14
20012001-08-092001-08-09
20022002-06-132002-08-28
20032003-06-072003-09-04
20042004-06-192004-08-11
20052005-05-262005-08-15
20062006-06-262006-09-02
20072007-06-032007-07-11
20082008-05-172008-08-17
20092009-07-052009-08-19
20102010-07-082010-08-17
20112011-08-212011-09-11
20122012-08-042012-09-07
20132013-06-282013-09-11
20142014-05-012014-09-15
20152015-06-252015-08-19
20162016-04-182016-08-26
20172017-06-242017-09-28
20182018-06-182018-08-22
20192019-06-122019-08-28
20202020-07-272020-09-10
20212021-06-252021-08-13
20222022-06-262022-10-16
20232023-07-052023-09-02
20242024-05-112024-09-06
20252025-06-082025-09-16
20262026-06-022026-08-25

Every Fixed Threshold

Fixed thresholds at Seattle Sand Pt WFO
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days372020159
35 C (95 F): Days11320091
40 C (104 F): Days2120091
90 F (32.2 C): Days30820155
100 F (37.8 C): Days2220092
0 C (32 F): Ice days (max14819902
0 C (32 F): Frost days (min3748199311
-10 C (14 F): Days with min1419904
20 C (68 F): Tropical nights (min4320211
10 mm (0.39 in): Days with 10 mm or more rain3744201717
25 mm (0.98 in): Days with 25 mm or more rain361020064
50 mm (1.97 in): Days with 50 mm or more rain11319962
100 mm (3.94 in): Days with 100 mm or more rain1120071
10 cm (3.9 in): Days with 10 cm or more snowfall3219961

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1987.

Download the Data

  • Data for Seattle Sand Pt WFO 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 (2026-10-17).