SeaTac weather
At 5:45 PM local time it was cloudy and 8°C (46°F). Little to no rain in the next 24 hours. Best months for weather: May–Sep. SeaTac sits 130 m (427 ft) above sea level, which keeps it cooler than the coast. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for SeaTac, Washington, United States.
Current conditions
- Clouds
- 88%
- Chance of rain
- 0%
- Rain
- 0.0 mm/h
Hourly Forecast
Little to no rain in the next 24 hours
Daily Forecast
Best Time to Visit
Peak season May–SepOff season Nov–Mar
About SeaTac weather
Is it raining in SeaTac right now?
No. It’s cloudy and 8° right now. Little to no rain in the next 24 hours.
What’s the weather like in SeaTac this week?
Over the next 7 days, expect highs of 10–14° and lows of 1–10°. Rain is likely on 1 of 7 days (Friday). The driest day looks like Monday.
Has it been raining in SeaTac lately?
In the past 7 days, SeaTac had 3 rainy days and 16.8 mm of rain in total.
What should I pack for SeaTac?
For the coming week, bring an umbrella or rain jacket and a warm winter coat.
SeaTac weather by month
When is the best time to visit SeaTac?
Based on weather alone, the best time to visit SeaTac is May–Sep, according to NASA's 2001–2025 climate averages. Nov–Mar tends to be the least pleasant. Average highs run from 6°C (44°F) in December to 23°C (74°F) in August.
What is the rainiest month in SeaTac?
November is the wettest month, with about 188 mm (7.4 in) of rain on average. July is the driest, with about 19 mm (0.7 in).
What is the hottest month in SeaTac?
August is the warmest, with average highs of 23°C (74°F) and lows of 13°C (56°F). December is the coolest, with highs of 6°C (44°F) and lows of 1°C (34°F).
Does SeaTac have a rainy season?
Yes. Nov–Jan is the rainy season (150 mm or more a month), while Jun–Sep is usually dry (under 60 mm).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months