Forecast Details for Captiva, FL

Recent Locations: Captiva, FL

Current Alerts for Captiva, FL: Flood Advisory Flood Watch

This Afternoon: Showers and possibly a thunderstorm. High near 86. Heat index values as high as 101. West wind around 11 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 80. South southwest wind 10 to 13 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Friday: Showers and possibly a thunderstorm. High near 86. Heat index values as high as 100. Southwest wind 8 to 10 mph becoming south southeast in the morning. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Friday Night: Showers and possibly a thunderstorm. Low around 80. South wind around 10 mph. Chance of precipitation is 80%.

Saturday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 86. South southwest wind around 9 mph. Chance of precipitation is 70%.

Saturday Night: Scattered showers and thunderstorms. Cloudy, with a low around 81. East wind around 9 mph. Chance of precipitation is 50%.

Sunday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 89. East northeast wind around 9 mph. Chance of precipitation is 70%.

Sunday Night: Showers likely and possibly a thunderstorm before 2am, then scattered showers and thunderstorms after 2am. Mostly cloudy, with a low around 80. East wind 11 to 14 mph. Chance of precipitation is 60%.

Monday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 90. Breezy, with an east wind 13 to 15 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.

Monday Night: Showers likely and possibly a thunderstorm before 8pm, then scattered showers and thunderstorms after 8pm. Mostly cloudy, with a low around 80. Breezy. Chance of precipitation is 60%.

Tuesday: Scattered showers and thunderstorms. Partly sunny, with a high near 89. Breezy. Chance of precipitation is 50%.

Tuesday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. Windy. Chance of precipitation is 40%.

Juneteenth: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 89. Windy. Chance of precipitation is 70%.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

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 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