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.

Partly Cloudy

79°F

26°C

Humidity 94%
Wind Speed SW 3 mph
Barometer 30.02 in (1016.5 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 13 Aug 6:52 am EDT
Extended Forecast for

Neptune Beach FL

Heat Advisory August 13, 11:00am until August 13, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 89. Heat index values as high as 103. Southwest wind 7 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 17 mph.

    High: 89 °F

    Mostly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 79. South wind 9 to 13 mph, with gusts as high as 17 mph.

    Low: 79 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Heat index values as high as 101. Southwest wind 9 to 13 mph, with gusts as high as 17 mph.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 80. South wind 9 to 13 mph becoming west after midnight. Winds could gust as high as 17 mph.

    Low: 80 °F

    Chance
    T-storms

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Sunny, with a high near 88. West wind 5 to 7 mph becoming calm. Chance of precipitation is 40%.

    High: 88 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 81. Chance of precipitation is 30%.

    Low: 81 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, then showers and thunderstorms likely after 8am. Mostly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 2am, then a chance of showers. Partly cloudy, with a low around 80. Chance of precipitation is 60%.

    Low: 80 °F

    T-storms
    Likely

  • Sunday

    Sunday: A chance of showers, then showers and thunderstorms likely after 8am. Mostly sunny, with a high near 85. Chance of precipitation is 60%.

    High: 85 °F

    T-storms
    Likely

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 89. Heat index values as high as 103. Southwest wind 7 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 17 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 79. South wind 9 to 13 mph, with gusts as high as 17 mph.
Thursday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Heat index values as high as 101. Southwest wind 9 to 13 mph, with gusts as high as 17 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 80. South wind 9 to 13 mph becoming west after midnight. Winds could gust as high as 17 mph.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Sunny, with a high near 88. West wind 5 to 7 mph becoming calm. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 81. Chance of precipitation is 30%.
Saturday
A slight chance of showers, then showers and thunderstorms likely after 8am. Mostly sunny, with a high near 87. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely before 2am, then a chance of showers. Partly cloudy, with a low around 80. Chance of precipitation is 60%.
Sunday
A chance of showers, then showers and thunderstorms likely after 8am. Mostly sunny, with a high near 85. Chance of precipitation is 60%.
Sunday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 80. Chance of precipitation is 60%.
Monday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 79.
Tuesday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Neptune Beach FL
 30.32°N 81.38°W
Last Update:
5:16 am EDT Aug 13, 2025
Forecast Valid:
7am EDT Aug 13, 2025-6pm EDT Aug 19, 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