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

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

Lat: 30.4°NLon: 81.42°WElev: 13ft.

Partly Cloudy

90°F

32°C

Humidity 66%
Wind Speed Vrbl 5 mph
Barometer 30.01 in (1016.3 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 24 Aug 11:52 am EDT
Extended Forecast for

Neptune Beach FL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 91. Heat index values as high as 105. Southwest wind 8 to 14 mph becoming southeast. Winds could gust as high as 20 mph.

    High: 91 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 79. Breezy, with a southwest wind 7 to 15 mph, with gusts as high as 21 mph.

    Low: 79 °F

    Chance
    T-storms and
    Breezy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 85. Southwest wind 6 to 9 mph becoming southeast in the afternoon.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 77. South wind 6 to 8 mph. Chance of precipitation is 60%.

    Low: 77 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 84. Southwest wind 5 to 11 mph becoming southeast in the afternoon. Chance of precipitation is 60%.

    High: 84 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 77. Chance of precipitation is 60%.

    Low: 77 °F

    Showers
    Likely then
    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84.

    High: 84 °F

    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 77.

    Low: 77 °F

    Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 91. Heat index values as high as 105. Southwest wind 8 to 14 mph becoming southeast. Winds could gust as high as 20 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 79. Breezy, with a southwest wind 7 to 15 mph, with gusts as high as 21 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 85. Southwest wind 6 to 9 mph becoming southeast in the afternoon.
Tuesday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 77. South wind 6 to 8 mph. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 84. Southwest wind 5 to 11 mph becoming southeast in the afternoon. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 77. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 77.
Friday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 77.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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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:
8:31 am EDT Aug 24, 2026
Forecast Valid:
12pm EDT Aug 24, 2026-6pm EDT Aug 30, 2026
 
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