Forecast Details for Happy Valley, OR

Recent Locations: Happy Valley, OR  
Overnight: A 50 percent chance of rain. Mostly cloudy, with a low around 43. East northeast wind around 5 mph.
Thursday: Mostly sunny, with a high near 63. North northeast wind around 6 mph becoming southwest in the afternoon.
Thursday Night: Mostly clear, with a low around 42. South wind around 6 mph.
Friday: Rain likely after 11am. Mostly cloudy, with a high near 61. Southeast wind around 7 mph becoming south southwest in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night: Rain. Low around 46. South southeast wind 6 to 8 mph becoming southwest after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday: Rain. High near 51. Chance of precipitation is 90%.
Saturday Night: Showers. Low around 43. Chance of precipitation is 80%.
Sunday: Showers likely. Partly sunny, with a high near 52.
Sunday Night: Showers. Mostly cloudy, with a low around 45.
Monday: Rain before 11am, then showers and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 53. Breezy.
Monday Night: Rain and possibly a thunderstorm. Mostly cloudy, with a low around 41.
Tuesday: Rain. Partly sunny, with a high near 55.
Tuesday Night: A chance of rain. Mostly cloudy, with a low around 41.
Wednesday: A chance of rain. Partly sunny, with a high near 57.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Want to Receive our Free Daily Forecast Emails in your inbox by 5 a.m.?
There are no ads! Learn More
We respect your privacy and will not share or sell your email with anyone.

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

Today's National Weather Map

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

Tomorrows National Weather Map

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.

North American Water Vapor Map

Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Cirrus Clouds Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

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