National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Extreme Heat Risk this Week

Extreme heat and little overnight relief will lead to an extreme risk for heat-related impacts through the rest of the week. Extreme Heat Warning in effect on Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Jacksonville International Airport (KJAX)

Lat: 30.5°NLon: 81.69°WElev: 23ft.

Mostly Cloudy

84°F

29°C

Humidity 72%
Wind Speed W 15 mph
Barometer 30.00 in (1015.8 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 19 Aug 9:56 pm EDT
Extended Forecast for

Jacksonville International Airport FL

Heat Advisory August 20, 11:00am until August 20, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 76. West wind 3 to 5 mph.

    Low: 76 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Increasing clouds and hot, with a high near 96. Heat index values as high as 107. Light and variable wind becoming south around 6 mph in the afternoon.

    High: 96 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 76. South wind 3 to 7 mph.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: Showers and thunderstorms likely after 2pm. Sunny, then becoming mostly cloudy during the afternoon, with a high near 94. Heat index values as high as 106. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 60%.

    High: 94 °F

    Mostly Sunny
    then T-storms
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 75. Southwest wind 3 to 6 mph. Chance of precipitation is 60%.

    Low: 75 °F

    T-storms
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 70%.

    High: 92 °F

    Mostly Sunny
    then T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.

    Low: 74 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 74.

    Low: 74 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 76. West wind 3 to 5 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Increasing clouds and hot, with a high near 96. Heat index values as high as 107. Light and variable wind becoming south around 6 mph in the afternoon.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 76. South wind 3 to 7 mph.
Friday
Showers and thunderstorms likely after 2pm. Sunny, then becoming mostly cloudy during the afternoon, with a high near 94. Heat index values as high as 106. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 75. Southwest wind 3 to 6 mph. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 70%.
Saturday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.
Sunday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 74.
Monday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Jacksonville International Airport FL
 30.48°N 81.68°W
Last Update:
8:01 pm EDT Aug 19, 2026
Forecast Valid:
10pm EDT Aug 19, 2026-6pm EDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation