Forecast Details for Union, OR

Recent Locations: Union, OR Cherokee, AL Levant, ME

Overnight: Mostly cloudy, with a low around 39. South wind around 6 mph.

Sunday: A 20 percent chance of rain after 10am. Cloudy, with a high near 57. South wind 6 to 9 mph.

Sunday Night: A 50 percent chance of rain. Cloudy, with a low around 41. South wind around 6 mph becoming light and variable in the evening. New precipitation amounts of less than a tenth of an inch possible.

Monday: A 30 percent chance of rain before 10am. Cloudy through mid morning, then gradual clearing, with a high near 58. Northwest wind 5 to 14 mph, with gusts as high as 18 mph.

Monday Night: Mostly clear, with a low around 37. Northwest wind 6 to 9 mph becoming east after midnight.

Tuesday: Mostly cloudy, with a high near 59.

Tuesday Night: A 50 percent chance of rain, mainly after 10pm. Cloudy, with a low around 43.

Wednesday: Rain. High near 51. Chance of precipitation is 100%.

Wednesday Night: Rain likely, mainly before 10pm. Snow level 4300 feet lowering to 3700 feet after midnight . Mostly cloudy, with a low around 37. Chance of precipitation is 70%.

Thursday: Rain likely, possibly mixed with snow, becoming all rain after 1pm. Snow level 3400 feet. Mostly cloudy, with a high near 48.

Thursday Night: A chance of rain and snow. Snow level 3700 feet. Mostly cloudy, with a low around 37.

Friday: A chance of rain and snow. Snow level 3500 feet rising to 4300 feet in the afternoon. Mostly cloudy, with a high near 51.

Friday Night: A chance of rain and snow. Mostly cloudy, with a low around 36.

Saturday: A chance of rain and snow. Mostly cloudy, with a high near 51.

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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

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 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

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog