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

Hazardous Weather Conditions

Current conditions at

Mayport Naval Station - Adm David L. McDonald Field (KNRB)

Lat: 30.4°NLon: 81.42°WElev: 13ft.

Mostly Cloudy

86°F

30°C

Humidity 80%
Wind Speed S 6 mph
Barometer 30.00 in (1015.7 mb)
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 31 Jul 8:52 pm EDT
Extended Forecast for

Jacksonville Beach FL

Heat Advisory August 1, 11:00am until August 1, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 80. West wind 10 to 13 mph, with gusts as high as 17 mph.

    Low: 80 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 89. Heat index values as high as 105. West wind 9 to 11 mph becoming southeast in the afternoon. Winds could gust as high as 16 mph.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 81. South wind 11 to 14 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 81 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers, then showers and thunderstorms after 11am. High near 87. West wind around 10 mph becoming southeast in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 80%.

    High: 87 °F

    Chance
    T-storms then
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Low around 79. East wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 80%.

    Low: 79 °F

    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 82. Chance of precipitation is 90%.

    High: 82 °F

    Showers
    Likely then
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Low around 77. Chance of precipitation is 80%.

    Low: 77 °F

    T-storms then
    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers, then showers and possibly a thunderstorm after 8am. High near 83. Chance of precipitation is 80%.

    High: 83 °F

    Showers
    Likely then
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Low around 79. Chance of precipitation is 80%.

    Low: 79 °F

    T-storms then
    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 80. West wind 10 to 13 mph, with gusts as high as 17 mph.
Friday
Sunny, with a high near 89. Heat index values as high as 105. West wind 9 to 11 mph becoming southeast in the afternoon. Winds could gust as high as 16 mph.
Friday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 81. South wind 11 to 14 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Saturday
A chance of showers, then showers and thunderstorms after 11am. High near 87. West wind around 10 mph becoming southeast in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 80%.
Saturday Night
Showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Low around 79. East wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 80%.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 82. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Low around 77. Chance of precipitation is 80%.
Monday
A slight chance of showers, then showers and possibly a thunderstorm after 8am. High near 83. Chance of precipitation is 80%.
Monday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Low around 79. Chance of precipitation is 80%.
Tuesday
A slight chance of showers, then showers and thunderstorms likely after 8am. Mostly sunny, with a high near 84. Chance of precipitation is 70%.
Tuesday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 79. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely. Mostly sunny, with a high near 84. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 79. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms likely. Mostly sunny, with a high near 83. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Jacksonville Beach FL
 30.3°N 81.39°W
Last Update:
8:07 pm EDT Jul 31, 2025
Forecast Valid:
9pm EDT Jul 31, 2025-6pm EDT Aug 7, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation