10-day forecast for SeaTac, WA: 37° to 56°, with precipitation expected on 6 days. The table below breaks each day into morning, afternoon, evening and overnight.
50°
Best day: Thursday, November 19
50° · 0.28 in
Worst day: Monday, November 16
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 1556° / 46°0.18
Morning53°feels 52°
Afternoon54°feels 53°
Evening49°feels 46°
Overnight56°feels 54°
56 °
SeaTac, Sunday, 15 November
Light rain. High 56°, low 46°.
Pressure29.85 inHg
Wind10.6 mph SW
Humidity76%
Visibility4.3 mi
Dew point46°
Mon, 1650° / 41°0.28
Morning47°feels 45°
Afternoon49°feels 48°
Evening43°feels 41°
Overnight46°feels 46°
50 °
SeaTac, Monday, 16 November
Rain. High 50°, low 41°.
Pressure30.09 inHg
Wind4.2 mph S
Humidity76%
Visibility6.2 mi
Dew point42°
Tue, 1747° / 38°0
Morning38°feels 38°
Afternoon47°feels 46°
Evening43°feels 39°
Overnight39°feels 37°
47 °
SeaTac, Tuesday, 17 November
Overcast. High 47°, low 38°.
Pressure30.00 inHg
Wind2.1 mph N
Humidity86%
Visibility1.2 mi
Dew point42°
Wed, 1848° / 42°0
Morning43°feels 39°
Afternoon48°feels 45°
Evening44°feels 41°
Overnight41°feels 38°
48 °
SeaTac, Wednesday, 18 November
Overcast. High 48°, low 42°.
Pressure29.94 inHg
Wind6.2 mph NE
Humidity68%
Visibility6.2 mi
Dew point38°
Thu, 1950° / 40°0
Morning42°feels 37°
Afternoon44°feels 40°
Evening46°feels 42°
Overnight41°feels 37°
50 °
SeaTac, Thursday, 19 November
Clear. High 50°, low 40°.
Pressure30.03 inHg
Wind8.6 mph N
Humidity82%
Visibility—
Dew point38°
Fri, 2048° / 37°0
Morning38°feels 35°
Afternoon44°feels 44°
Evening47°feels 46°
Overnight43°feels 41°
48 °
SeaTac, Friday, 20 November
Partly cloudy. High 48°, low 37°.
Pressure29.97 inHg
Wind7.1 mph NE
Humidity78%
Visibility—
Dew point36°
Sat, 2148° / 44°0.08
Morning45°feels 42°
Afternoon46°feels 44°
Evening47°feels 47°
Overnight46°feels 45°
48 °
SeaTac, Saturday, 21 November
Light rain. High 48°, low 44°.
Pressure30.00 inHg
Wind4.3 mph E
Humidity72%
Visibility—
Dew point37°
Sun, 2246° / 43°0.14
Morning45°feels 45°
Afternoon46°feels 46°
Evening46°feels 46°
Overnight43°feels 43°
46 °
SeaTac, Sunday, 22 November
Light rain. High 46°, low 43°.
Pressure29.94 inHg
Wind2.6 mph S
Humidity86%
Visibility—
Dew point41°
Mon, 2348° / 40°0.1
Morning41°feels 41°
Afternoon45°feels 45°
Evening45°feels 45°
Overnight44°feels 44°
48 °
SeaTac, Monday, 23 November
Light rain. High 48°, low 40°.
Pressure29.88 inHg
Wind2.5 mph NE
Humidity78%
Visibility—
Dew point37°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in SeaTac, WA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.