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Data as of 2026-10-12
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Built 2026-10-14 (14 October 2026)

Seattle Weather Records and Extremes

Record highs and lows for Seattle, threaded from 1 station; the hottest day was 42.2 C (108.0 F) on 28 June 2021, with the station behind every year.

Key Facts for Seattle

  • The highest maximum temperature on record in Seattle is 42.2 C (108.0 F), set on 28 June 2021.
  • The lowest minimum temperature on record in Seattle is -17.8 C (0.0 F), set on 31 January 1950.
  • The lowest maximum temperature on record in Seattle is -8.9 C (16.0 F), set on 14 January 1950.
  • The highest minimum temperature on record in Seattle is 22.8 C (73.0 F), set on 27 June 2021.
  • The Seattle record is threaded from 1 station and runs from 1948 to 2026, 79 years.
  • 1,464 daily records at Seattle still stand.
  • 1950 holds the most standing records at Seattle: 64.

Stations Behind the Seattle Record

79 years of record
Stations threaded into the Seattle record
StationFromToNotes
Seattle Tacoma AP19482026Seattle-Tacoma International Airport.

Caveats

  • Sea-Tac Airport is about 20 km south of downtown and about 130 m higher.

All-Time Extremes

All-time temperature extremes at Seattle
ExtremeValueDateStation
Highest maximum42.2 C (108.0 F)28 June 2021Seattle Tacoma AP
Lowest maximum-8.9 C (16.0 F)14 January 1950Seattle Tacoma AP
Highest minimum22.8 C (73.0 F)27 June 2021Seattle Tacoma AP
Lowest minimum-17.8 C (0.0 F)31 January 1950Seattle Tacoma AP

Daily Record Envelope and 2026

5 days at or beyond a record
Daily record high and record low at Seattle, with 2026 drawn through them The band shows the record high and record low for each calendar day at Seattle. The lines show the 2026 daily maximum and minimum. 5 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Seattle. The lines show the 2026 daily maximum and minimum. 5 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Seattle, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan17.8 C (64.0 F)-17.8 C (0.0 F)14.4 C (57.9 F)-3.3 C (26.1 F)
Feb21.1 C (70.0 F)-17.2 C (1.0 F)16.7 C (62.1 F)-1.7 C (28.9 F)
Mar26.1 C (79.0 F)-11.7 C (10.9 F)14.4 C (57.9 F)0.0 C (32.0 F)
Apr31.7 C (89.1 F)-1.7 C (28.9 F)23.9 C (75.0 F)2.2 C (36.0 F)
May33.9 C (93.0 F)-2.2 C (28.0 F)27.8 C (82.0 F)5.0 C (41.0 F)
Jun42.2 C (108.0 F)3.3 C (37.9 F)32.8 C (91.0 F)8.3 C (46.9 F)
Jul39.4 C (102.9 F)6.1 C (43.0 F)35.0 C (95.0 F)11.1 C (52.0 F)
Aug37.2 C (99.0 F)6.7 C (44.1 F)31.1 C (88.0 F)11.7 C (53.1 F)
Sep36.7 C (98.1 F)1.7 C (35.1 F)25.6 C (78.1 F)7.8 C (46.0 F)
Oct31.7 C (89.1 F)-2.2 C (28.0 F)21.7 C (71.1 F)10.0 C (50.0 F)
Nov23.3 C (73.9 F)-14.4 C (6.1 F)n/an/a
Dec18.9 C (66.0 F)-14.4 C (6.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Seattle by the year they were set 1,464 records at Seattle still stand. 1950 holds the most, with 64. 0204060801948: 271949: 431950: 641951: 341952: 461953: 271954: 401955: 521956: 231957: 141958: 141959: 121960: 291961: 221962: 261963: 261964: 181965: 261966: 171967: 161968: 211969: 151970: 141971: 251972: 341973: 141974: 141975: 111976: 181977: 161978: 51979: 111980: 201981: 171982: 131983: 111984: 51985: 221986: 141987: 201988: 101989: 161990: 181991: 131992: 231993: 101994: 171995: 191996: 181997: 61998: 51999: 102000: 12001: 72002: 192003: 162004: 102005: 192006: 122007: 82008: 162009: 112010: 152011: 112012: 62013: 102014: 212015: 202016: 282017: 182018: 172019: 212020: 172021: 222022: 162023: 212024: 162025: 152026: 101948195619641972198019881996200420122020
1,464 records at Seattle still stand. 1950 holds the most, with 64.
Standing records at Seattle by the year they were set
Year setStanding records
194827
194943
195064
195134
195246
195327
195440
195552
195623
195714
195814
195912
196029
196122
196226
196326
196418
196526
196617
196716
196821
196915
197014
197125
197234
197314
197414
197511
197618
197716
19785
197911
198020
198117
198213
198311
19845
198522
198614
198720
198810
198916
199018
199113
199223
199310
199417
199519
199618
19976
19985
199910
20001
20017
200219
200316
200410
200519
200612
20078
200816
200911
201015
201111
20126
201310
201421
201520
201628
201718
201817
201921
202017
202122
202216
202321
202416
202515
202610

All-Time Record Progression

7 new records
When Seattle set new all-time records 7 all-time records were set at Seattle between 20 July 1994 and 28 June 2021. Each dot is a new record. Record high maximum temperatureRecord daily precipitationRecord high minimum temperature20 July 1994: Record high maximum temperature 37.8 C (100.0 F)20 October 2003: Record daily precipitation 127.5 mm (5.0 in)29 July 2009: Record high maximum temperature 39.4 C (102.9 F)29 July 2009: Record high minimum temperature 21.7 C (71.1 F)27 June 2021: Record high maximum temperature 40.0 C (104.0 F)27 June 2021: Record high minimum temperature 22.8 C (73.0 F)28 June 2021: Record high maximum temperature 42.2 C (108.0 F)199520002005201020152020
7 all-time records were set at Seattle between 20 July 1994 and 28 June 2021. Each dot is a new record.
When Seattle set new all-time records
DateKindDetail
1994-07-20Record high maximum temperatureRecord high maximum temperature 37.8 C (100.0 F)
2003-10-20Record daily precipitationRecord daily precipitation 127.5 mm (5.0 in)
2009-07-29Record high maximum temperatureRecord high maximum temperature 39.4 C (102.9 F)
2009-07-29Record high minimum temperatureRecord high minimum temperature 21.7 C (71.1 F)
2021-06-27Record high maximum temperatureRecord high maximum temperature 40.0 C (104.0 F)
2021-06-27Record high minimum temperatureRecord high minimum temperature 22.8 C (73.0 F)
2021-06-28Record high maximum temperatureRecord high maximum temperature 42.2 C (108.0 F)

Wettest Day of Each Month

Oct: 127.5 mm (5.0 in)
Record daily precipitation for each month at Seattle The wettest day on record for each calendar month at Seattle. The most was 127.5 mm (5.0 in) on 20 October 2003. 050100150 Jan: 75.7 mm (3.0 in), 18 January 1986 Jan Feb: 77.7 mm (3.1 in), 8 February 1996 Feb Mar: 68.6 mm (2.7 in), 5 March 1972 Mar Apr: 67.1 mm (2.6 in), 4 April 1991 Apr May: 46.5 mm (1.8 in), 29 May 1969 May Jun: 44.5 mm (1.8 in), 1 June 1968 Jun Jul: 21.6 mm (0.9 in), 13 July 1981 Jul Aug: 41.4 mm (1.6 in), 18 August 1975 Aug Sep: 43.4 mm (1.7 in), 28 September 2013 Sep Oct: 127.5 mm (5.0 in), 20 October 2003 Oct Nov: 86.6 mm (3.4 in), 20 November 1959 Nov Dec: 95.8 mm (3.8 in), 3 December 2007 Dec
The wettest day on record for each calendar month at Seattle. The most was 127.5 mm (5.0 in) on 20 October 2003.
Record daily precipitation for each month at Seattle
MonthRecord daily precipitation (mm)Date
Jan75.7 mm (3.0 in)18 January 1986
Feb77.7 mm (3.1 in)8 February 1996
Mar68.6 mm (2.7 in)5 March 1972
Apr67.1 mm (2.6 in)4 April 1991
May46.5 mm (1.8 in)29 May 1969
Jun44.5 mm (1.8 in)1 June 1968
Jul21.6 mm (0.9 in)13 July 1981
Aug41.4 mm (1.6 in)18 August 1975
Sep43.4 mm (1.7 in)28 September 2013
Oct127.5 mm (5.0 in)20 October 2003
Nov86.6 mm (3.4 in)20 November 1959
Dec95.8 mm (3.8 in)3 December 2007

Period of Record Coverage

1948 to 2026
Days with data per year at Seattle 79 years of record at Seattle, 1948 to 2026. 1 years have data for under 90 percent of days and are left out of rankings: 2026. 1948: 366 of 366 days1949: 365 of 365 days1950: 365 of 365 days1951: 364 of 365 days1952: 366 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 282 of 365 days19501960197019801990200020102020
79 years of record at Seattle, 1948 to 2026. 1 years have data for under 90 percent of days and are left out of rankings: 2026.
Days with data per year at Seattle
YearDays with dataShare of yearComplete
1948366100%Yes
1949365100%Yes
1950365100%Yes
1951364100%Yes
1952366100%Yes
1953365100%Yes
1954365100%Yes
1955365100%Yes
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992366100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628277%No

Latest Records

Latest records at Seattle
DateStationRecordValueBeat old record byOld record stoodSignificance
13 September 2026Seattle Tacoma AP, USdaily rain (Provisional)14.0 mm (0.6 in)1.0 mm (0.04 in)71 years20 of 100 (Routine)
23 June 2026Seattle Tacoma AP, USdaily high min18.3 C (64.9 F)1.6 C (2.9 F)33 years24 of 100 (Routine)
15 June 2026Seattle Tacoma AP, USdaily high max32.8 C (91.0 F)1.7 C (3.1 F)63 years28 of 100 (Routine)
15 June 2026Seattle Tacoma AP, USdaily high min17.8 C (64.0 F)1.7 C (3.1 F)11 years18 of 100 (Routine)
14 June 2026Seattle Tacoma AP, USdaily high min16.1 C (61.0 F)1.7 C (3.1 F)64 years34 of 100 (Routine)
14 June 2026Seattle Tacoma AP, USdaily high max31.7 C (89.1 F)1.7 C (3.1 F)37 years21 of 100 (Routine)
12 May 2026Seattle Tacoma AP, USdaily high max (Tie)27.8 C (82.0 F)tie3 years1 of 100 (Routine)
4 May 2026Seattle Tacoma AP, USdaily high min (Tie)11.7 C (53.1 F)tie32 years4 of 100 (Routine)
3 May 2026Seattle Tacoma AP, USdaily high max27.2 C (81.0 F)2.2 C (4.0 F)33 years21 of 100 (Routine)
3 May 2026Seattle Tacoma AP, USdaily high min (Tie)13.3 C (55.9 F)tie9 years2 of 100 (Routine)
20 April 2026Seattle Tacoma AP, USdaily high min12.2 C (54.0 F)0.5 C (0.9 F)9 years11 of 100 (Routine)
24 March 2026Seattle Tacoma AP, USdaily rain25.1 mm (1.0 in)0.2 mm (0.01 in)72 years28 of 100 (Routine)
18 March 2026Seattle Tacoma AP, USdaily high min10.0 C (50.0 F)1.1 C (2.0 F)31 years19 of 100 (Routine)
17 March 2026Seattle Tacoma AP, USdaily high min (Tie)8.9 C (48.0 F)tie36 years4 of 100 (Routine)
14 March 2026Seattle Tacoma AP, USdaily snow depth7.6 cm (3.0 in)7.6 cm (3.0 in)77 years20 of 100 (Routine)
13 March 2026Seattle Tacoma AP, USdaily rain31.0 mm (1.2 in)13.2 mm (0.5 in)64 years45 of 100 (Notable)
13 March 2026Seattle Tacoma AP, USdaily snowfall7.6 cm (3.0 in)3.3 cm (1.3 in)71 years37 of 100 (Notable)
13 March 2026Seattle Tacoma AP, USdaily snow depth2.5 cm (1.0 in)2.5 cm (1.0 in)77 years20 of 100 (Routine)
13 March 2026Seattle Tacoma AP, USdaily low max1.7 C (35.1 F)3.9 C (7.0 F)13 years22 of 100 (Routine)
11 March 2026Seattle Tacoma AP, USdaily rain29.2 mm (1.1 in)3.5 mm (0.14 in)24 years19 of 100 (Routine)

Threshold Days in Seattle

How many days a year reach a given temperature or amount of rain. The combined page lists every threshold.

Download the Data

  • Data for Seattle standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Seattle 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 2026-10-12 (12 October 2026). The city record threads stations by a curated mapping and is not official.

Data as of . Last revised (2026-10-12).