Forecast Details for Seattle-Tacoma International Airport, WA

Recent Locations: Melbourne Airport, 07 London Gatwick Airport, ENG Seattle-Tacoma International Airport, WA

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Tonight: A 30 percent chance of rain, mainly after 5am. Increasing clouds, with a low around 44. South wind 7 to 9 mph.

Saturday: Rain. High near 52. South southeast wind 13 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Saturday Night: Rain, mainly before 10pm. Low around 43. South wind 6 to 11 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Rain likely, mainly after 4pm. Cloudy, with a high near 49. North wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 41. West wind 7 to 9 mph becoming south in the evening. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday: A 50 percent chance of rain. Mostly cloudy, with a high near 50.

Monday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 38.

Tuesday: A slight chance of rain. Mostly sunny, with a high near 51.

Tuesday Night: Partly cloudy, with a low around 36.

Wednesday: Partly sunny, with a high near 50.

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

Thursday: A chance of rain. Mostly cloudy, with a high near 51.

Thursday Night: A chance of rain. Mostly cloudy, with a low around 40.

Friday: A chance of rain. Mostly cloudy, with a high near 49.

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North America Water Vapor (Moisture)

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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