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Hazardous Weather Conditions

Current conditions at

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

Lat: 30.4°NLon: 81.42°WElev: 13ft.

Fair

83°F

28°C

Humidity 79%
Wind Speed Calm
Barometer 30.04 in (1017.3 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 16 Aug 8:52 am EDT
Extended Forecast for

6 Miles NW Mayport Naval Station FL

Heat Advisory August 16, 11:00am until August 16, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Some of the storms could produce heavy rainfall. Mostly sunny, with a high near 92. Heat index values as high as 109. Calm wind becoming east 5 to 8 mph in the afternoon.

    High: 92 °F

    Heavy Rain

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 3am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 78. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 78 °F

    Heavy Rain
    then Chance
    Showers

  • Sunday

    Sunday: 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. Partly sunny, with a high near 89. Light north wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Showers
    Likely then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 78. Northeast wind 3 to 6 mph. Chance of precipitation is 60%.

    Low: 78 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Sunny, with a high near 90. Northeast wind 6 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 30%.

    High: 90 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 77.

    Low: 77 °F

    Chance
    T-storms then
    Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Sunny, with a high near 90.

    High: 90 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly clear, with a low around 78. Chance of precipitation is 30%.

    Low: 78 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 8am. Sunny, with a high near 90. Chance of precipitation is 40%.

    High: 90 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Some of the storms could produce heavy rainfall. Mostly sunny, with a high near 92. Heat index values as high as 109. Calm wind becoming east 5 to 8 mph in the afternoon.
Tonight
Showers and thunderstorms likely, mainly before 3am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 78. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
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. Partly sunny, with a high near 89. Light north wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 78. Northeast wind 3 to 6 mph. Chance of precipitation is 60%.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Sunny, with a high near 90. Northeast wind 6 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 30%.
Monday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 77.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Sunny, with a high near 90.
Tuesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly clear, with a low around 78. Chance of precipitation is 30%.
Wednesday
A chance of showers, with thunderstorms also possible after 8am. Sunny, with a high near 90. Chance of precipitation is 40%.
Wednesday Night
A chance of thunderstorms before 8pm. Mostly clear, with a low around 77. Chance of precipitation is 30%.
Thursday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 78.
Friday
Showers and thunderstorms likely. Sunny, with a high near 92. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NW Mayport Naval Station FL
 30.47°N 81.5°W
Last Update:
3:11 am EDT Aug 16, 2025
Forecast Valid:
9am EDT Aug 16, 2025-6pm EDT Aug 22, 2025
 
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