Forecast Details for Jefferson, OR

Recent Locations: Hassell, NC Kingston, NY Jefferson, OR

Overnight: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Light south wind.

Saturday: A 40 percent chance of showers and thunderstorms, mainly after 11am. Areas of smoke after 5pm. Mostly cloudy, with a high near 79. Light and variable wind.

Saturday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers. Mostly cloudy, with a low around 57. West wind around 5 mph becoming calm after midnight. Chance of precipitation is 30%.

Sunday: A 20 percent chance of showers. Widespread haze between noon and 3pm. Partly sunny, with a high near 79. Light southwest wind.

Sunday Night: A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 57. West wind around 5 mph becoming calm in the evening.

Monday: Showers likely, with thunderstorms also possible after 2pm. Cloudy, with a high near 70. Chance of precipitation is 70%.

Monday Night: Showers and possibly a thunderstorm. Low around 58. Chance of precipitation is 80%.

Tuesday: Showers likely, then showers and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 73.

Tuesday Night: A chance of showers, mainly before 11pm. Mostly cloudy, with a low around 57.

Wednesday: A chance of showers, mainly after 11am. Partly sunny, with a high near 75.

Wednesday Night: A chance of showers. Partly cloudy, with a low around 55.

Thursday: A slight chance of showers. Partly sunny, with a high near 76.

Thursday Night: Partly cloudy, with a low around 56.

Friday: A slight chance of showers. Mostly sunny, with a high near 80.

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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 Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain