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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

82°F

28°C

Humidity 85%
Wind Speed W 5 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 16 Aug 1:52 am EDT
Extended Forecast for

4 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

  • Overnight

    Overnight: Mostly clear, with a low around 79. Light west wind.

    Low: 79 °F

    Mostly Clear

  • Saturday

    Saturday: 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 9 mph in the afternoon.

    High: 92 °F

    Heavy Rain

  • Saturday Night

    Saturday Night: 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 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 88. Light north wind becoming northeast 5 to 10 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 70%.

    High: 88 °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 7 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 89. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Sunny, with a high near 89.

    High: 89 °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

Detailed Forecast

Overnight
Mostly clear, with a low around 79. Light west wind.
Saturday
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 9 mph in the afternoon.
Saturday Night
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 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 88. Light north wind becoming northeast 5 to 10 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 70%.
Sunday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 78. Northeast wind 3 to 7 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 89. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 77.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Sunny, with a high near 89.
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 89. 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 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:
4 Miles NW Mayport Naval Station FL
 30.44°N 81.48°W
Last Update:
1:26 am EDT Aug 16, 2025
Forecast Valid:
2am EDT Aug 16, 2025-6pm EDT Aug 22, 2025
 
Forecast Discussion
 
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Additional Resources

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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