Forecast Details for Alpharetta, GA

Recent Locations: Alpharetta, GA

Today: Partly sunny, then gradually becoming sunny, with a high near 70. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

Tonight: Mostly clear, with a low around 49. West wind around 5 mph becoming calm in the evening.

Tuesday: Sunny, with a high near 77. Light northwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

Tuesday Night: Mostly cloudy, with a low around 56. Northwest wind around 5 mph becoming calm in the evening.

Wednesday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 68. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%.

Wednesday Night: A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.

Thursday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 50%.

Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.

Friday: Showers likely, mainly after 2pm. Partly sunny, with a high near 75. Chance of precipitation is 60%.

Friday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.

Saturday: A 50 percent chance of showers. Partly sunny, with a high near 73.

Saturday Night: A 40 percent chance of showers. Partly cloudy, with a low around 53.

Sunday: A 40 percent chance of showers. Mostly sunny, with a high near 74.

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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 Hole Punch Clouds?

Home - Education - Cloud Types - Hole Punch Clouds

Hole Punch Clouds Next Topic: Mammatus Clouds

A hole punch cloud is an unusual occurrence when a disk-shaped hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.

When part of the cloud forms ice crystals, water droplets in the surrounding area of the cloud evaporate. The effect of this process produces a large elliptical gap in the cloud. The hole punch cloud formation is rare, but it is not specific to any geographic area.

Other names which have been used to describe this phenomena include fallstreak hole, skypunch, and cloud hole.

Next Topic: Mammatus Clouds

Weather Topic: What are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

Next Topic: Precipitation