Seatac Weather History

Washington, United States of America

Weather on a past date in Seatac

Any date from 1 January 2009 to yesterday.

Tue 27 Oct, 2026 Weather in Seatac

Sunrise: 07:45 AM
Sunset: 06:00 PM		Moonrise: 06:20 PM
Moonset: 09:49 AM		Max:
13.3 °c		Min:
8.2 °c		Avg:
9.9 °c		Precip:
2.39 mm		Max Wind:
18.4 kph
 
Tue 27
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IconPatchy rain possibleLight drizzlePatchy rain possiblePatchy rain possiblePatchy rain possiblePatchy rain possiblePatchy rain possibleLight drizzle
Temp9.7°c9.6°c9.2°c9.2°c10.2°c13.3°c10.9°c8.9°c
Wind4.3 kmph3.2 kmph4.3 kmph6.1 kmph9.0 kmph16.9 kmph18.4 kmph17.3 kmph
Precip0.01 mm0.18 mm0.07 mm0.01 mm0.03 mm0.06 mm0.01 mm0.24 mm
Cloud100%100%94%77%89%92%81%100%
Humidity88%89%92%91%84%54%66%75%
Pressure1016 mb1016 mb1016 mb1016 mb1016 mb1015 mb1015 mb1015 mb

Seatac Annual Weather Averages

MonthHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
January7°C / 45°F2°C / 36°F4°C / 40°F108 hours177.48 mm / 6.99 In12 days1019 mb / 31 In
February8°C / 46°F2°C / 35°F5°C / 40°F87 hours134.12 mm / 5.28 In11 days1018 mb / 31 In
March10°C / 51°F3°C / 38°F6°C / 44°F97 hours157.86 mm / 6.22 In13 days1016 mb / 30 In
April14°C / 56°F5°C / 41°F9°C / 48°F117 hours111.18 mm / 4.38 In10 days1017 mb / 31 In
May18°C / 64°F8°C / 47°F13°C / 55°F168 hours77.23 mm / 3.04 In8 days1017 mb / 31 In
June21°C / 70°F11°C / 51°F16°C / 61°F189 hours54.04 mm / 2.13 In5 days1016 mb / 30 In
July26°C / 78°F14°C / 56°F19°C / 67°F260 hours15.56 mm / 0.61 In2 days1017 mb / 31 In
August26°C / 78°F14°C / 58°F20°C / 67°F262 hours28.26 mm / 1.11 In3 days1016 mb / 30 In
September22°C / 71°F12°C / 53°F16°C / 61°F197 hours73.81 mm / 2.91 In7 days1016 mb / 30 In
October15°C / 60°F8°C / 47°F11°C / 52°F163 hours146.94 mm / 5.79 In10 days1017 mb / 31 In
November10°C / 49°F4°C / 40°F7°C / 44°F103 hours211.89 mm / 8.34 In14 days1017 mb / 31 In
December7°C / 44°F2°C / 36°F4°C / 39°F96 hours203.16 mm / 8.00 In13 days1018 mb / 31 In

Need more than one day of Seatac history?

Download historical weather for Seatac, or any other location, in CSV from January 2009 onwards. Ideal for research, insurance, energy, agriculture and machine-learning projects.

  • Historical weatherDaily and hourly interval data.
  • Yearly monthly averagesMonthly averages for every year since 2009.
  • Monthly climate averagesLong-term climate normals by month.
  • CSV formatReady for Excel, Python, R or your database.
Buy historical weather data Or use the History API

Weather history near Seatac

Region

Washington

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Seatac weather history: common questions

How far back does Seatac weather history go?

Hourly historical weather is available from 1 January 2009. Choose a date above, or pick a month at the top of the page for long-term averages.

Can I download Seatac historical weather as a file?

Yes. Buy historical weather data as daily or hourly CSV, yearly monthly averages or monthly climate averages. A free sample download is available.

Is there an API for historical weather?

Yes. The WeatherAPI.com History API returns hourly weather for any past date from 2010, as JSON or XML. Get a free API key.

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