National Weather Service United States Department of Commerce

Oppressive heat and humidity building into the central and southeast U.S.

A heat wave is building into parts of the central and southeast U.S. this week. The combination of heat and humidity will lead to dangerous heat indices, especially in parts of the central Mississippi River Valley where an Excessive Heat Warning is in effect. Heat Advisories are in effect elsewhere across the region. Relief is not expected for several days.
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Current Conditions

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4 Miles N Mayport Naval Station FL

7 Day Forecast

For More Weather Information:

Jacksonville, FL Local Forecast Office

Today

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 92 °F

Tonight

Mostly Clear

Mostly
Clear

Low: 79 °F

Friday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 93 °F

Friday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 81 °F

Saturday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 94 °F

Saturday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 81 °F

Sunday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 90 °F

Sunday
Night

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

Low: 80 °F

Monday

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

High: 87 °F

Detailed Forecast

  • Today A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Heat index values as high as 103. West wind 5 to 8 mph becoming southeast in the afternoon.
  • Tonight Mostly clear, with a low around 79. South wind 8 to 10 mph.
  • Friday A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. Heat index values as high as 104. Southwest wind 5 to 7 mph becoming light and variable.
  • Friday Night A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 81. South wind 9 to 11 mph.
  • Saturday A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 94. Southwest wind 6 to 8 mph.
  • Saturday Night A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 81.
  • Sunday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
  • Sunday Night A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 80.
  • Monday A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 87. Breezy.
  • Monday Night A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 80.
  • Tuesday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Breezy.
  • Tuesday Night A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78.
  • Wednesday A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85.