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.

A Few Clouds

81°F

27°C

Humidity 82%
Wind Speed Calm
Barometer 30.03 in (1016.9 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 16 Aug 4:52 am EDT
Extended Forecast for

Mayport Naval Station FL

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

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79. Light southwest wind.

    Low: 79 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 30 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 108. Light and variable wind becoming east 5 to 10 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 92 °F

    Heavy Rain

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, mainly before 8pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 78. East wind around 6 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. North wind 5 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    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 7 to 9 mph. Chance of precipitation is 60%.

    Low: 78 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Monday

    Monday: A chance of showers between 8am and 11am, then a chance of showers and thunderstorms after 11am. Sunny, with a high near 90. Breezy. Chance of precipitation is 30%.

    High: 90 °F

    Chance
    T-storms and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 78.

    Low: 78 °F

    Mostly Clear

  • Tuesday

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

    High: 90 °F

    Chance
    T-storms and
    Breezy

  • 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

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79. Light southwest wind.
Saturday
A 30 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 108. Light and variable wind becoming east 5 to 10 mph in the afternoon. Winds could gust as high as 16 mph.
Saturday Night
Showers and thunderstorms likely, mainly before 8pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 78. East wind around 6 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. North wind 5 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Sunday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 78. Northeast wind 7 to 9 mph. Chance of precipitation is 60%.
Monday
A chance of showers between 8am and 11am, then a chance of showers and thunderstorms after 11am. Sunny, with a high near 90. Breezy. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 78.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Sunny, with a high near 90. Breezy.
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. Breezy. Chance of precipitation is 40%.
Wednesday Night
A chance of thunderstorms. Mostly clear, with a low around 77. Chance of precipitation is 30%.
Thursday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 78.
Friday
A 50 percent chance of showers and thunderstorms. Sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mayport Naval Station FL
 30.39°N 81.43°W
Last Update:
3:11 am EDT Aug 16, 2025
Forecast Valid:
5am EDT Aug 16, 2025-6pm EDT Aug 22, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation