Forecast Details for Seattle, WA

Recent Locations: Phenix, VA Putney, KY Seattle, WA

Current Alerts for Seattle, WA: Winter Storm Warning

Overnight: A 20 percent chance of rain after 4am. Mostly cloudy, with a steady temperature around 42. Southeast wind around 6 mph.

Wednesday: Rain and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then rain likely and possibly a thunderstorm after 5pm. High near 49. Light and variable wind becoming south southwest around 6 mph in the morning. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: Rain likely, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 37. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Thursday: Mostly sunny, with a high near 55. South southwest wind 3 to 6 mph.

Thursday Night: Mostly cloudy, with a low around 41. South southeast wind 3 to 6 mph.

Friday: Partly sunny, with a high near 57.

Friday Night: Mostly cloudy, with a low around 42.

Saturday: Mostly cloudy, with a high near 63.

Saturday Night: A chance of rain. Mostly cloudy, with a low around 48.

Sunday: A chance of rain. Mostly cloudy, with a high near 63.

Sunday Night: A chance of rain. Mostly cloudy, with a low around 48.

Monday: A slight chance of rain. Mostly sunny, with a high near 65.

Monday Night: A slight chance of rain. Partly cloudy, with a low around 48.

Tuesday: A slight chance of rain. Mostly sunny, with a high near 65.

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

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 are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

Next Topic: Precipitation

Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds