Seattle Tacoma International Airport Weather Forecast
Local 7-day forecast
Light Rain Likely then Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Seattle Tacoma International Airport in one place.
Rain likely between 10am and 2pm, then showers and thunderstorms likely between 2pm and 5pm, then rain. Mostly cloudy. High near 53, with temperatures falling to around 51 in the afternoon. South southwest wind 12 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Seattle Tacoma International Airport is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: May 14, 2026 5:32 PM PDT.
The active forecast window currently covers May 15 to May 20, 2026 for Seattle Tacoma International Airport.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 15 to May 20, 2026
- Latest sync
- May 14, 2026 5:32 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Seattle-Tacoma International Airport
Wednesday looks like the warmest upcoming period in Seattle-Tacoma International Airport at 68 degrees F.
Saturday Night is the coolest period ahead with temperatures near 42 degrees F.
The strongest winds are forecast for Friday at about 12 to 15 mph SSW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- May 14, 2026 5:32 PM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- SEW
- Radar station
- KATX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Rain likely. Mostly cloudy, with a low around 43. South southwest wind 10 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain before 11am, then showers and thunderstorms between 11am and 5pm, then rain likely. Mostly cloudy, with a high near 56. South southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain likely before 11pm. Mostly cloudy, with a low around 42. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Partly sunny, with a high near 63.
Mostly cloudy, with a low around 46.
Partly sunny, with a high near 65.
Mostly cloudy, with a low around 48.
Partly sunny, with a high near 65.
Mostly cloudy, with a low around 49.
Mostly sunny, with a high near 68.
Partly cloudy, with a low around 50.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
May 15
|
Light Rain Likely then Showers And Thunderstorms Likely
|
53°F |
12 to 15 mph
SSW
|
|
Friday Night
May 15
|
Light Rain Likely
|
43°F |
10 to 15 mph
SSW
|
|
Saturday
May 16
|
Showers And Thunderstorms
|
56°F |
5 to 10 mph
SSW
|
|
Saturday Night
May 16
|
Light Rain Likely then Mostly Cloudy
|
42°F |
5 mph
ESE
|
|
Sunday
May 17
|
Partly Sunny
|
63°F |
3 mph
SSW
|
|
Sunday Night
May 17
|
Mostly Cloudy
|
46°F |
3 mph
E
|
|
Monday
May 18
|
Partly Sunny
|
65°F |
5 mph
SW
|
|
Monday Night
May 18
|
Mostly Cloudy
|
48°F |
6 mph
SW
|
|
Tuesday
May 19
|
Partly Sunny
|
65°F |
6 mph
WSW
|
|
Tuesday Night
May 19
|
Mostly Cloudy
|
49°F |
2 to 6 mph
NE
|
|
Wednesday
May 20
|
Mostly Sunny
|
68°F |
2 to 8 mph
N
|
|
Wednesday Night
May 20
|
Partly Cloudy
|
50°F |
3 to 8 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Seattle-Tacoma International Airport.