Forecast Details for Astoria, OR

Recent Locations: Albertson, NY Roberta, GA Astoria, OR

Overnight: Rain likely. Cloudy, with a low around 43. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday: Rain, mainly before 3pm, then showers and possibly a thunderstorm after 5pm. High near 49. South southeast wind around 11 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Wednesday Night: Rain and possibly a thunderstorm before 2am, then rain likely. Low around 39. Southwest wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: Rain likely, mainly before 11am. Partly sunny, with a high near 51. West wind 3 to 8 mph. Chance of precipitation is 60%.

Thursday Night: Partly cloudy, with a low around 40. West southwest wind 5 to 7 mph becoming calm in the evening.

Friday: Mostly sunny, with a high near 54.

Friday Night: Mostly clear, with a low around 40.

Saturday: Mostly sunny, with a high near 60.

Saturday Night: Partly cloudy, with a low around 44.

Sunday: Partly sunny, with a high near 63.

Sunday Night: Partly cloudy, with a low around 46.

Monday: Partly sunny, with a high near 61.

Monday Night: A slight chance of rain. Mostly cloudy, with a low around 47.

Tuesday: A chance of rain. Mostly cloudy, with a high near 55.

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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)

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Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle