Forecast Details for Eugene, OR

Recent Locations: Leverett, MA Memphis, TN Eugene, OR

Overnight: Mostly cloudy, with a steady temperature around 38. Calm wind.

Friday: A 30 percent chance of rain, mainly after 3pm. Cloudy, with a high near 51. Calm wind becoming southwest around 6 mph in the afternoon.

Friday Night: Rain, mainly after 7pm. Low around 41. South southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday: Rain. High near 47. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday Night: Rain. Low around 37. Light north wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: A 50 percent chance of rain. Mostly cloudy, with a high near 49.

Sunday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 38.

Washington's Birthday: Rain likely, mainly after 10am. Mostly cloudy, with a high near 46.

Monday Night: Rain. Snow level 2600 feet lowering to 1900 feet after midnight . Mostly cloudy, with a low around 34.

Tuesday: Rain likely. Snow level 1700 feet. Mostly cloudy, with a high near 46.

Tuesday Night: Rain likely. Snow level 1600 feet. Mostly cloudy, with a low around 33.

Wednesday: Rain. Snow level 1300 feet rising to 2100 feet in the afternoon. Mostly cloudy, with a high near 47.

Wednesday Night: Rain. Snow level 1900 feet. Mostly cloudy, with a low around 34.

Thursday: Rain. Snow level 1900 feet. Mostly cloudy, with a high near 44.

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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)

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 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