Forecast Details for Grants Pass, OR

Recent Locations: Thibodaux, LA   Grants Pass, OR  
Today: Mostly sunny, with a high near 81. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Tonight: Partly cloudy, with a low around 50. Northwest wind 5 to 8 mph becoming calm in the evening.
Sunday: A 20 percent chance of rain after 11am. Partly sunny, with a high near 74. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Sunday Night: Rain likely, mainly after 11pm. Mostly cloudy, with a low around 54. Southwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Monday: Rain likely before 11am. Mostly cloudy, with a high near 71. West southwest wind 3 to 8 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night: Partly cloudy, with a low around 50.
Tuesday: Sunny, with a high near 86.
Tuesday Night: Mostly clear, with a low around 55.
Wednesday: Sunny, with a high near 89.
Wednesday Night: Mostly clear, with a low around 56.
Thursday: Sunny, with a high near 93.
Thursday Night: Mostly clear, with a low around 59.
Friday: Sunny and hot, with a high near 97.

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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 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

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

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