Forecast Details for Grants Pass, OR

Recent Locations: Tulsa, OK Mariposa, CA Grants Pass, OR

This Afternoon: Showers likely, then showers and possibly a thunderstorm after 1pm. High near 56. Light and variable wind becoming southwest around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers and possibly a thunderstorm before 10pm, then a chance of showers. Patchy dense fog after 1am. Low around 45. Calm wind. Chance of precipitation is 80%.

Monday: A slight chance of showers before 11am, then a slight chance of rain between 11am and 3pm. Patchy dense fog before 1pm. Otherwise, mostly sunny, with a high near 58. Calm wind. Chance of precipitation is 20%.

Monday Night: Mostly cloudy, with a low around 43. Calm wind.

Tuesday: A 10 percent chance of rain after 4pm. Mostly cloudy, with a high near 57. Calm wind becoming west southwest around 5 mph in the afternoon.

Tuesday Night: Rain, mainly after 10pm. Low around 46. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday: Rain. High near 52. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night: Rain likely, mainly before 10pm. Patchy fog after 10pm. Snow level 4000 feet. Otherwise, mostly cloudy, with a low around 40.

Thursday: A chance of rain. Patchy fog before 10am. Snow level 3500 feet rising to 4100 feet in the afternoon. Otherwise, mostly cloudy, with a high near 53.

Thursday Night: A chance of rain. Mostly cloudy, with a low around 42.

Friday: A slight chance of rain. Partly sunny, with a high near 57.

Friday Night: A slight chance of rain. Mostly cloudy, with a low around 41.

Saturday: Mostly sunny, with a high near 60.

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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 Cirrus Clouds?

Home - Education - Cloud Types - 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

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