Forecast Details for Seattle-Tacoma International Airport, WA

Recent Locations: Blackville, SC Newark International Airport, NJ Seattle-Tacoma International Airport, WA

Tonight: Increasing clouds, with a low around 36. North wind around 5 mph becoming calm in the evening.

Thursday: Cloudy through mid morning, then gradual clearing, with a high near 52. South southwest wind 5 to 8 mph.

Thursday Night: A 30 percent chance of rain, mainly after 4am. Increasing clouds, with a low around 40. South wind around 9 mph.

Friday: Rain likely, mainly after 10am. Cloudy, with a high near 48. South wind 7 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 39. South wind 5 to 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Saturday: A 40 percent chance of rain. Mostly cloudy, with a high near 46.

Saturday Night: A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 36.

Sunday: A slight chance of rain. Partly sunny, with a high near 46.

Sunday Night: A slight chance of rain and snow after 4am. Mostly cloudy, with a low around 34.

Washington's Birthday: A slight chance of rain and snow before 10am, then a chance of rain. Mostly cloudy, with a high near 46.

Monday Night: A chance of rain and snow. Mostly cloudy, with a low around 35.

Tuesday: A chance of rain and snow. Mostly cloudy, with a high near 47.

Tuesday Night: A chance of rain and snow. Mostly cloudy, with a low around 36.

Wednesday: Rain and snow likely. Mostly cloudy, with a high near 47.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds

Weather Topic: What is Drizzle?

Home - Education - Precipitation - Drizzle

Drizzle Next Topic: Evaporation

Drizzle is precipitation in the form of water droplets which are smaller than raindrops.

Drizzle is characterized by fine, gently falling droplets and typically does not impact human habitation in a negative way. The exception to this is freezing drizzle, a condition where drizzle freezes immediately upon reaching earth's surface. Freezing drizzle is still less dangerous than freezing rain, but can potentially result in hazardous road conditions.

Next Topic: Evaporation