Forecast Details for Deer Island, OR

Recent Locations: Deer Island, OR  
Today: Increasing clouds, with a high near 75. Light north northwest wind becoming northwest 5 to 9 mph in the morning.
Tonight: Mostly clear, with a low around 45. Northwest wind 5 to 8 mph becoming calm after midnight.
Friday: A 20 percent chance of showers after 11am. Mostly cloudy, with a high near 70. Calm wind becoming west southwest around 5 mph in the afternoon.
Friday Night: A 40 percent chance of showers after 11pm. Mostly cloudy, with a low around 48. Northwest wind around 6 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Saturday: Showers and possibly a thunderstorm. High near 63. Calm wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night: A 40 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, with a low around 45.
Sunday: A 40 percent chance of showers, mainly after 11am. Partly sunny, with a high near 66.
Sunday Night: A slight chance of showers. Mostly cloudy, with a low around 47.
Monday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 68.
Monday Night: A slight chance of showers before 11pm. Partly cloudy, with a low around 49.
Tuesday: A slight chance of showers. Partly sunny, with a high near 71.
Tuesday Night: Partly cloudy, with a low around 50.
Juneteenth: A slight chance of showers. Mostly sunny, with a high near 77.

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Current U.S. National Radar--Current

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Current U.S. National Radar

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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

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