Forecast Details for Saint Simons Island, GA

Recent Locations: Lugoff, SC Casper, WY Saint Simons Island, GA

Current Alerts for Saint Simons Island, GA: Fire Weather Watch

Tonight: Showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Low around 62. Southwest wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday: A 40 percent chance of showers, mainly between 7am and 9am. Mostly cloudy through mid morning, then gradual clearing, with a temperature rising to near 64 by 10am, then falling to around 55 during the remainder of the day. Windy, with a northwest wind 6 to 11 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 32 mph.

Sunday Night: Clear, with a low around 31. Wind chill values as low as 24. Northwest wind 11 to 13 mph, with gusts as high as 29 mph.

Monday: Sunny, with a high near 51. Wind chill values as low as 21 early. Northwest wind around 14 mph, with gusts as high as 26 mph.

Monday Night: Clear, with a low around 28. Northwest wind 7 to 10 mph, with gusts as high as 22 mph.

Tuesday: Sunny, with a high near 54.

Tuesday Night: Mostly clear, with a low around 36.

Wednesday: Partly sunny, with a high near 66.

Wednesday Night: Mostly cloudy, with a low around 48.

Thursday: Partly sunny, with a high near 71.

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

Friday: A 50 percent chance of showers. Partly sunny, with a high near 70.

Friday Night: A 40 percent chance of showers. Partly cloudy, with a low around 51.

Saturday: A 30 percent chance of showers. Partly sunny, with a high near 68.

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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 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

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