Forecast Details for Juneau, AK

Recent Locations: Juneau, AK

Tonight: Showers before midnight, then rain after midnight. Low around 38. Southeast wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

Friday: Rain. The rain could be heavy at times. High near 44. Southeast wind 10 to 15 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

Friday Night: Rain. Low around 37. Southeast wind 10 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday: Rain showers before 3pm, then rain and snow showers. High near 39. Southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.

Saturday Night: Rain and snow showers, becoming all snow after 9pm. Low around 28. Southeast wind 5 to 15 mph, with gusts as high as 35 mph. Chance of precipitation is 100%.

Sunday: Snow showers. High near 32. Chance of precipitation is 90%.

Sunday Night: Snow showers likely, mainly after 3am. Cloudy, with a low around 25. Chance of precipitation is 70%.

Monday: Snow showers likely, mainly before 9am. Cloudy, with a high near 30.

Monday Night: A chance of snow showers. Cloudy, with a low around 25.

Tuesday: A chance of snow showers before 9am, then a chance of snow after 3pm. Mostly cloudy, with a high near 31.

Tuesday Night: A chance of snow. Mostly cloudy, with a low around 21.

Wednesday: A chance of snow. Mostly cloudy, with a high near 29.

Wednesday Night: Mostly cloudy, with a low around 17.

Thursday: Mostly sunny, with a high near 27.

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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

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

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.

Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds