Forecast Details for Saint Petersburg, FL

Recent Locations: Saint Petersburg, FL

Tonight: Mostly clear, with a low around 76. East southeast wind around 9 mph.

Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 91. Heat index values as high as 99. East wind around 7 mph.

Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 75. Light and variable wind becoming east southeast around 6 mph in the evening. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: Showers and thunderstorms likely, mainly after 2pm. Sunny, with a high near 92. Heat index values as high as 100. East southeast wind around 6 mph becoming southwest in the afternoon. Chance of precipitation is 70%.

Thursday Night: Showers and thunderstorms likely before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 75. West wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 60%.

Friday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 91. Light and variable wind becoming southwest 5 to 8 mph in the morning. Chance of precipitation is 70%.

Friday Night: Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 76. South southeast wind 3 to 6 mph. Chance of precipitation is 60%.

Saturday: Showers likely and possibly a thunderstorm before 8am, then showers and thunderstorms likely after 8am. Partly sunny, with a high near 91. Southeast wind 5 to 8 mph becoming west southwest in the afternoon. Chance of precipitation is 70%.

Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76. West northwest wind around 6 mph becoming light and variable after midnight.

Sunday: Showers likely and possibly a thunderstorm before 2pm, then showers and thunderstorms likely after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 70%.

Sunday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.

Monday: Showers and thunderstorms likely. Partly sunny, with a high near 90. Chance of precipitation is 70%.

Monday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.

Tuesday: Showers and thunderstorms likely. Partly 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 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