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SeaTac, Washington Weather Forecast
SeaTac, Washington Weather
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Weather Forecast for SeaTac, Washington : King County
Issued: 1:25 am PST Dec 16, 2025 Latitude: 47.4537103 Longitude: -122.3217908 View on Google Maps

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Overnight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
50% chance of rain on Overnight 100% chance of rain on Tuesday 90% chance of rain on Wednesday 100% chance of rain on Thursday Rain on Friday Rain on Saturday Rain and Snow on Sunday 70% chance of rain & snow on Monday
Low: 46°F High: 55°F High: 47°F High: 50°F High: 45°F High: 44°F High: 46°F High: 47°F
Low: 42°F Low: 41°F Low: 39°F Low: 38°F Low: 37°F Low: 40°F  
Rain Rain Rain Rain Rain Rain Rain and Snow Rain & Snow
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Current Conditions at
SEATTLE-TACOMA - (KSEA)
46°
Mostly Cloudy
as of 3:53 AM PST
Rel. Humidity: 100%
Dew Point: 46°F
Visibility: 9 Miles
Pressure: 30.03 in.
Flight Rule: IFR
Wind Data
8 MPH
180° South
Cloud Level(s): Broken at 900ft, Broken at 1900ft
Current Conditions at
BOEING FIELD - (KBFI)
46°
Mostly Cloudy
as of 3:53 AM PST
Rel. Humidity: 93%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 30.03 in.
Flight Rule: MVFR
Wind Data
8 MPH
150° Southeast
Cloud Level(s): Scattered at 1500ft, Broken at 2000ft
Current Conditions at
RENTON - (KRNT)
48°
Cloudy
as of 3:53 AM PST
Rel. Humidity: 93%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: MVFR
Wind Data
3 MPH
160° South
Cloud Level(s): Broken at 1400ft, Broken at 2200ft, Solid Overcast at 2700ft
Current Conditions at
PIERCE CNTY A/P - (KPLU)
48°
Cloudy
as of 3:55 AM PST
Rel. Humidity: 100%
Dew Point: 48°F
Visibility: 8 Miles
Pressure: 30.05 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Broken at 1700ft, Solid Overcast at 2500ft
50% chance of rain Overnight Overnight... A 50 percent chance of rain. Mostly cloudy, with a low around 46. South wind 11 to 13 mph.
100% chance of rain Tuesday Tuesday... Rain. Patchy fog after noon. High near 55. South southwest wind 14 to 20 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
100% chance of thunderstorms Tuesday Night Tuesday Night... Rain and possibly a thunderstorm before 1am, then a chance of rain. Patchy fog before 11pm. Low around 42. Windy, with a south southwest wind 24 to 30 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
90% chance of rain Wednesday Wednesday... Rain. High near 47. Southwest wind 11 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
90% chance of rain Wednesday Night Wednesday Night... Rain. Low around 41. South wind around 11 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
100% chance of rain Thursday Thursday... Rain. High near 50. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
90% chance of rain Thursday Night Thursday Night... Rain. Low around 39. Chance of precipitation is 90%.
Rain on Friday Friday... Rain. Mostly cloudy, with a high near 45.
Rain on Friday Night Friday Night... Rain. Mostly cloudy, with a low around 38.
Rain on Saturday Saturday... Rain. Mostly cloudy, with a high near 44.
Rain and Snow on Saturday Night Saturday Night... Rain and snow likely. Mostly cloudy, with a low around 37.
Rain and Snow on Sunday Sunday... Rain and snow likely. Mostly cloudy, with a high near 46.
70% chance of rain & snow Sunday Night Sunday Night... Rain likely, possibly mixed with snow. Mostly cloudy, with a low around 40.
70% chance of rain & snow Monday Monday... Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 47.
Current Radar Image


Sun Almanac for SeaTac, Washington
Sunrise: 07:51 AM
Sunset: 4:19 PM
Civil Sunrise:07:15 AM
Civil Sunset: 4:55 PM
Nautical Sunrise: 06:36 AM
Nautical Sunset: 5:34 PM
Astro Sunrise: 05:59 AM
Astro Sunset: 6:11 PM
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