Forecast Details for Seattle, WA

Recent Locations: Seattle, WA

Overnight: A 40 percent chance of rain, mainly before 3am. Mostly cloudy, with a low around 42. East wind around 7 mph.

Thursday: Rain likely, mainly between 11am and 5pm. Mostly cloudy, with a high near 49. Light and variable wind becoming north around 5 mph in the morning. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Thursday Night: Rain, mainly after midnight. Low around 43. North northeast wind 6 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday: Rain. High near 54. East wind 15 to 18 mph becoming south in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday Night: Rain likely, mainly after 4am. Mostly cloudy, with a low around 44. South wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Saturday: Rain. High near 50. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday Night: Rain. Low around 42. Chance of precipitation is 80%.

Sunday: Rain likely. Mostly cloudy, with a high near 49.

Sunday Night: Rain likely. Mostly cloudy, with a low around 40.

Monday: A chance of rain. Partly sunny, with a high near 48.

Monday Night: A chance of rain. Mostly cloudy, with a low around 39.

Tuesday: A chance of rain. Partly sunny, with a high near 47.

Tuesday Night: A chance of rain. Mostly cloudy, with a low around 38.

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

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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

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

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 is Condensation?

Home - Education - Precipitation - Condensation

Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails

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