Forecast Details for Marylhurst, OR

Recent Locations: Papillion, NE Windsor, VT Marylhurst, OR

Overnight: Areas of frost before 4am, then areas of frost after 5am. Otherwise, mostly cloudy, with a low around 35. North northeast wind 3 to 5 mph.

Sunday: A 30 percent chance of rain, mainly after 3pm. Areas of frost before 7am. Snow level 800 feet rising to 7100 feet in the afternoon. Otherwise, mostly cloudy, with a high near 50. North northeast wind 3 to 6 mph.

Sunday Night: A slight chance of rain before 11pm, then a slight chance of rain after 4am. Mostly cloudy, with a low around 43. Light and variable wind. Chance of precipitation is 20%.

Monday: Partly sunny, with a high near 65. South southwest wind 3 to 6 mph.

Monday Night: A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 49. South wind around 8 mph.

Tuesday: Rain likely, mainly after 11am. Cloudy, with a high near 59. Chance of precipitation is 60%.

Tuesday Night: Rain likely. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.

Wednesday: Rain likely. Cloudy, with a high near 60.

Wednesday Night: Rain likely, mainly before 11pm. Cloudy, with a low around 51.

Thursday: Rain likely. Mostly cloudy, with a high near 64.

Thursday Night: A chance of rain. Mostly cloudy, with a low around 51.

Friday: A chance of rain. Mostly cloudy, with a high near 66.

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

Saturday: A chance of rain. Mostly cloudy, with a high near 62.

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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