Hourly Weather Forecast - SeaTac, WA

12 AM
38°F
10%
7mph
NE
Mostly Clear
Humidity
89%
Feels like
33°F
Dew Point
35°F
1 AM
37°F
10%
7mph
NNE
Partly Cloudy
Humidity
89%
Feels like
31°F
Dew Point
34°F
2 AM
37°F
10%
8mph
NNE
Partly Cloudy
Humidity
88%
Feels like
31°F
Dew Point
33°F
3 AM
37°F
10%
8mph
NNE
Mostly Cloudy
Humidity
87%
Feels like
31°F
Dew Point
33°F
4 AM
37°F
10%
9mph
NNE
Cloudy
Humidity
88%
Feels like
30°F
Dew Point
33°F
5 AM
37°F
10%
9mph
NNE
Cloudy
Humidity
89%
Feels like
30°F
Dew Point
33°F
6 AM
36°F
10%
9mph
NNE
Mostly Cloudy
Humidity
90%
Feels like
29°F
Dew Point
34°F
7 AM
36°F
10%
9mph
NNE
Mostly Cloudy
Humidity
91%
Feels like
29°F
Dew Point
34°F
7:55 AM
8 AM
37°F
10%
10mph
NNE
Mostly Cloudy
Humidity
91%
Feels like
30°F
Dew Point
35°F
9 AM
38°F
10%
10mph
NNE
Cloudy
Humidity
89%
Feels like
31°F
Dew Point
35°F
10 AM
39°F
10%
10mph
NNE
Cloudy
Humidity
87%
Feels like
33°F
Dew Point
36°F
11 AM
40°F
10%
10mph
N
Cloudy
Humidity
84%
Feels like
34°F
Dew Point
36°F
12 PM
41°F
20%
10mph
N
Cloudy
Humidity
82%
Feels like
35°F
Dew Point
36°F
1 PM
42°F
30%
9mph
N
30% Chance of Light Rain
Humidity
82%
Feels like
36°F
Dew Point
37°F
2 PM
42°F
40%
9mph
N
40% Chance of Light Rain
Humidity
83%
Feels like
36°F
Dew Point
37°F
3 PM
41°F
40%
9mph
N
40% Chance of Light Rain
Humidity
87%
Feels like
35°F
Dew Point
37°F
4 PM
40°F
50%
8mph
N
50% Chance of Light Rain
Humidity
90%
Feels like
35°F
Dew Point
37°F
4:23 PM
5 PM
39°F
50%
8mph
NNE
50% Chance of Light Rain
Humidity
93%
Feels like
34°F
Dew Point
38°F
6 PM
39°F
50%
7mph
NNE
50% Chance of Light Rain
Humidity
95%
Feels like
34°F
Dew Point
38°F
7 PM
39°F
40%
7mph
NNE
40% Chance of Light Rain
Humidity
96%
Feels like
34°F
Dew Point
38°F
8 PM
38°F
40%
6mph
NE
40% Chance of Light Rain
Humidity
96%
Feels like
34°F
Dew Point
38°F
9 PM
38°F
40%
6mph
NE
40% Chance of Light Rain
Humidity
97%
Feels like
33°F
Dew Point
37°F
10 PM
38°F
40%
6mph
ENE
40% Chance Frozen Mix
Humidity
97%
Feels like
33°F
Dew Point
37°F
11 PM
37°F
40%
6mph
ENE
40% Chance Frozen Mix
Humidity
98%
Feels like
33°F
Dew Point
37°F

Rain And Snow Totals Through Monday

Atmospheric River Impacts Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California through Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

White Christmas? What Are The Odds

Sunday's Weather Outlook

Sunday's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

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