Live Weather & Forecast
Weather in SeaTac
Washington, United States · Real-time conditions & 3-day outlook
13°C
Feels like 13°C
56°F / Feels 56°F
Overcast
SeaTac, Washington
🌞 Daytime
Updated: 2026-04-12 16:45
Humidity
69%
Wind
6.1 km/h NW
Wind Gust
8.3 km/h
Pressure
1008 mb
Visibility
16 km
UV Index
1.1
(Low)
Precipitation
0 mm
Cloud Cover
100%
Dew Point
8.9°C
Wind Degree
323°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
209.9 μg/m³
NO₂
34.8 μg/m³
O₃
32 μg/m³
SO₂
3.2 μg/m³
PM 2.5
9.2 μg/m³
PM 10
9.5 μg/m³
Today's Hourly Forecast
24-hour breakdown for SeaTac, Washington
12 AM
8°
Clear
1 AM
8°
Clear
2 AM
7°
Clear
3 AM
7°
Clear
4 AM
7°
Clear
5 AM
7°
Clear
6 AM
7°
Clear
7 AM
7°
Sunny
8 AM
8°
Sunny
9 AM
10°
Sunny
10 AM
10°
Sunny
11 AM
11°
Overcast
12 PM
11°
Overcast
1 PM
12°
Overcast
2 PM
13°
Cloudy
3 PM
13°
Cloudy
4 PM
13°
Overcast
5 PM
13°
Overcast
6 PM
12°
Overcast
7 PM
12°
Patchy rain nearby
8 PM
11°
Patchy rain nearby
9 PM
10°
Patchy rain nearby
10 PM
10°
Clear
11 PM
9°
Patchy rain nearby
3-Day Forecast
Daily overview for SeaTac, Washington
Today
Partly Cloudy
13°
/
6°
🌧️ 0% chance of rain
💧 Avg. humidity: 87%
💨 Max wind: 14 km/h
🌧️ Total precip: 0.09 mm
☀️ UV Index: 1
🌅 Sunrise: 06:26 AM
🌇 Sunset: 07:55 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Patchy rain nearby
12°
/
7°
🌧️ 87% chance of rain
💧 Avg. humidity: 81%
💨 Max wind: 16.2 km/h
🌧️ Total precip: 0.31 mm
☀️ UV Index: 0.2
🌅 Sunrise: 06:24 AM
🌇 Sunset: 07:56 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Heavy rain
8°
/
5°
🌧️ 86% chance of rain
💧 Avg. humidity: 88%
💨 Max wind: 30.2 km/h
🌧️ Total precip: 26.42 mm
☀️ UV Index: 0.2
🌅 Sunrise: 06:22 AM
🌇 Sunset: 07:58 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit SeaTac
Plan your trip to SeaTac, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in SeaTac?
Current conditions in SeaTac: Overcast, temperature 13°C, humidity 69%.
What is the best time to visit SeaTac?
The best time to visit SeaTac is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in SeaTac?
SeaTac is located at approximately 47.4° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in SeaTac?
The wettest period in SeaTac is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to SeaTac?
For visits to SeaTac during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is SeaTac in?
SeaTac is located in United States, in the state of Washington.
What are the public holidays in SeaTac in 2026?
View the 2026 public holidays for SeaTac on our Holidays page.
What are the GPS coordinates used for the weather forecast in SeaTac?
The weather forecast for SeaTac uses coordinates 47.4449, -122.2831.