Seattle Tacoma International Airport Weather Forecast 15 Days, Weather in SEA Today
Current weather conditions and 15 day weather forecast for Seattle Tacoma International Airport, Washington, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Seattle Tacoma International Airport
| 17 December 2025 Wednesday 7.8 ° C / 46°F  Overcast |
Feels Like : 3.3 ° C / 38°F Humidity : % 82 Pressure : 995 mb Wind Speed : 35.3 kmph / 21.9 miles from SW  Visibility : 16 km Precipitation (rainfall) : 0.57 mm Cloud (%) : 100 |
15 day weather forecast for Seattle Tacoma International Airport, WA, USA
Weather Forecast for next 15 Days for Seattle Tacoma International Airport including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Seattle Tacoma International Airport, Washington state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 17 December 2025 Wednesday |  Moderate rain |
4 ° C (39.2°F) |
9.6 ° C (49.3°F) |
6.6 ° C (43.8°F) |
% 83 | 90% | 0.1 | Sunrise:07:52 AM Sunset: 04:19 PM |
Moonrise:06:05 AM Moonset: 02:14 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday | Moderate rain |
4.6 ° C (40.3°F) |
9.7 ° C (49.5°F) |
6.1 ° C (43°F) |
% 89 | 81% | 0 | Sunrise:07:53 AM Sunset: 04:19 PM |
Moonrise:07:11 AM Moonset: 02:51 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Patchy rain nearby |
3.2 ° C (37.8°F) |
5.8 ° C (42.4°F) |
3.9 ° C (39.1°F) |
% 87 | 86% | 0.1 | Sunrise:07:53 AM Sunset: 04:20 PM |
Moonrise:08:10 AM Moonset: 03:38 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Patchy rain nearby |
3.5 ° C (38.3°F) |
6.3 ° C (43.3°F) |
5 ° C (41°F) |
% 86 | 87% | 0 | Sunrise:07:54 AM Sunset: 04:20 PM |
Moonrise:09:00 AM Moonset: 04:35 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Patchy rain nearby |
2.6 ° C (36.7°F) |
9.8 ° C (49.7°F) |
5.6 ° C (42°F) |
% 82 | 84% | 0 | Sunrise:07:54 AM Sunset: 04:21 PM |
Moonrise:09:41 AM Moonset: 05:42 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Patchy rain nearby |
5.6 ° C (42.2°F) |
7.5 ° C (45.4°F) |
6.4 ° C (43.5°F) |
% 86 | 89% | 2 | Sunrise:07:55 AM Sunset: 04:21 PM |
Moonrise:10:11 AM Moonset: 06:53 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Patchy rain nearby |
4.4 ° C (40°F) |
5.4 ° C (41.6°F) |
4.8 ° C (40.7°F) |
% 87 | 89% | 1 | Sunrise:07:55 AM Sunset: 04:22 PM |
Moonrise:10:35 AM Moonset: 08:06 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Patchy rain nearby |
2.2 ° C (36°F) |
5.5 ° C (41.9°F) |
4 ° C (39.2°F) |
% 86 | 82% | 1 | Sunrise:07:56 AM Sunset: 04:22 PM |
Moonrise:10:55 AM Moonset: 09:20 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Partly Cloudy |
1.4 ° C (34.5°F) |
6 ° C (42.8°F) |
3.1 ° C (37.6°F) |
% 70 | 0% | 2 | Sunrise:07:56 AM Sunset: 04:23 PM |
Moonrise:11:13 AM Moonset: 10:33 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Patchy rain nearby |
2.4 ° C (36.3°F) |
8 ° C (46.3°F) |
4.3 ° C (39.7°F) |
% 66 | 83% | 1 | Sunrise:07:56 AM Sunset: 04:24 PM |
Moonrise:11:29 AM Moonset: 11:47 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Patchy rain nearby |
2.7 ° C (36.8°F) |
4 ° C (39.2°F) |
3.6 ° C (38.4°F) |
% 91 | 88% | 1 | Sunrise:07:56 AM Sunset: 04:25 PM |
Moonrise:11:45 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Moderate rain |
2.8 ° C (37.1°F) |
5.5 ° C (41.8°F) |
4.1 ° C (39.4°F) |
% 85 | 88% | 1 | Sunrise:07:57 AM Sunset: 04:25 PM |
Moonrise:12:02 PM Moonset: 01:04 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Patchy rain nearby |
3.2 ° C (37.7°F) |
4.6 ° C (40.3°F) |
3.8 ° C (38.9°F) |
% 87 | 81% | 1 | Sunrise:07:57 AM Sunset: 04:26 PM |
Moonrise:12:23 PM Moonset: 02:24 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Patchy rain nearby |
0.3 ° C (32.6°F) |
5.5 ° C (41.9°F) |
2.2 ° C (36°F) |
% 78 | 65% | 1 | Sunrise:07:57 AM Sunset: 04:27 PM |
Moonrise:12:50 PM Moonset: 03:50 AM Moon Phase ( Waxing Gibbous ) |
|
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