Forecast Details for Saint Simons Island, GA

Recent Locations: Andrews, NC Creedmoor, NC Saint Simons Island, GA

Overnight: Mostly cloudy, with a low around 77. Light west wind.

Saturday: Showers and thunderstorms, mainly before 5pm, then showers and possibly a thunderstorm after 5pm. High near 91. Heat index values as high as 105. West wind around 6 mph becoming east in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night: Showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and 11pm, then a chance of showers and thunderstorms after 11pm. Low around 73. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday: Showers and possibly a thunderstorm, mainly before 5pm, then showers and thunderstorms after 5pm. High near 86. Northeast wind 3 to 7 mph. Chance of precipitation is 90%.

Sunday Night: Showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Low around 74. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%.

Monday: Showers and thunderstorms, mainly after 2pm. High near 87. Chance of precipitation is 80%.

Monday Night: Showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Low around 76. Chance of precipitation is 80%.

Tuesday: Showers and thunderstorms, mainly after 2pm. High near 90. Chance of precipitation is 80%.

Tuesday Night: Showers and thunderstorms, mainly before 8pm. Low around 76. Chance of precipitation is 80%.

Wednesday: Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 60%.

Wednesday Night: Showers and thunderstorms likely. Partly cloudy, with a low around 77. Chance of precipitation is 60%.

Thursday: Showers and thunderstorms likely. Mostly sunny, with a high near 89. Chance of precipitation is 70%.

Thursday Night: Showers and thunderstorms likely. Partly cloudy, with a low around 75. Chance of precipitation is 60%.

Friday: Showers and thunderstorms likely. Mostly sunny, with a high near 89. Chance of precipitation is 60%.

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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 Condensation?

Home - Education - Precipitation - Condensation

Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds