us Flag

SeaTac, USA Weather Averages

August is the hottest month in SeaTac with an average temperature of 19°C (65°F) and the coldest is December at 5°C (40°F). The wettest month is November with an average of 160mm of rain..

Average Temperature SeaTac

What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month
What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month

Average High Low Temperature SeaTac

What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

Average Rainfall SeaTac

What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

SeaTac : Next 24-Hour Weather

Tomorrow - 21st December 2024

Sunrise 07:54

Sunrise

Sunset 16:21

Sunset
19:00
Overcast
9°C (47°F)
20:00
Overcast
9°C (47°F)
21:00
Cloudy
9°C (47°F)
22:00
Cloudy
9°C (47°F)
23:00
Cloudy
9°C (47°F)

Tomorrow - 22nd December 2024

Sunrise 07:54

Sunrise

Sunset 16:21

Sunset
0:00
Partly cloudy
9°C (47°F)
1:00
Cloudy
9°C (47°F)
2:00
Cloudy
9°C (47°F)
3:00
Cloudy
9°C (47°F)
4:00
Overcast
9°C (47°F)
5:00
Overcast
9°C (47°F)
6:00
Overcast
9°C (47°F)
7:00
Overcast
9°C (47°F)
8:00
Overcast
8°C (46°F)
9:00
Overcast
8°C (45°F)
10:00
Overcast
8°C (46°F)
11:00
Overcast
8°C (46°F)
12:00
Overcast
9°C (47°F)
13:00
Overcast
8°C (46°F)
14:00
Overcast
8°C (46°F)
15:00
Overcast
9°C (47°F)
16:00
Overcast
9°C (47°F)
17:00
Moderate rain
9°C (47°F)
18:00
Moderate rain
9°C (47°F)