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.

Fair

95°F

35°C

Humidity 53%
Wind Speed W 8 mph
Barometer 29.97 in (1014.9 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 26 Jul 12:52 pm EDT
Extended Forecast for

Neptune Beach FL

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly between 2pm and 4pm. Mostly cloudy, with a high near 91. Heat index values as high as 105. West wind around 9 mph becoming southwest. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 91 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 78. South wind 11 to 13 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 78 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Heat index values as high as 101. West wind 8 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 79. Southeast wind 5 to 9 mph becoming southwest after midnight.

    Low: 79 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 89. Southwest wind 5 to 10 mph becoming southeast in the afternoon.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 81. Breezy.

    Low: 81 °F

    Partly Cloudy
    and Breezy

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms after 2pm. Some of the storms could produce heavy rainfall. Mostly sunny, with a high near 92. Breezy.

    High: 92 °F

    Breezy.
    Mostly Sunny
    then Heavy
    Rain

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 80. Windy. Chance of precipitation is 60%.

    Low: 80 °F

    Heavy Rain
    and Windy

  • Thursday

    Thursday: A chance of showers, then showers and thunderstorms likely after 8am. Partly sunny, with a high near 87. Windy. Chance of precipitation is 70%.

    High: 87 °F

    Chance
    T-storms and
    Windy then
    T-storms
    Likely and
    Breezy

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly between 2pm and 4pm. Mostly cloudy, with a high near 91. Heat index values as high as 105. West wind around 9 mph becoming southwest. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 78. South wind 11 to 13 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Heat index values as high as 101. West wind 8 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph.
Monday Night
Partly cloudy, with a low around 79. Southeast wind 5 to 9 mph becoming southwest after midnight.
Tuesday
Sunny, with a high near 89. Southwest wind 5 to 10 mph becoming southeast in the afternoon.
Tuesday Night
Partly cloudy, with a low around 81. Breezy.
Wednesday
A 50 percent chance of showers and thunderstorms after 2pm. Some of the storms could produce heavy rainfall. Mostly sunny, with a high near 92. Breezy.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 80. Windy. Chance of precipitation is 60%.
Thursday
A chance of showers, then showers and thunderstorms likely after 8am. Partly sunny, with a high near 87. Windy. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms likely before 2am, then a slight chance of showers. Mostly cloudy, with a low around 78. Breezy. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely. Mostly sunny, with a high near 86. Breezy. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 78. Breezy. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 86. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Neptune Beach FL
 30.32°N 81.38°W
Last Update:
2:21 am EDT Jul 26, 2026
Forecast Valid:
1pm EDT Jul 26, 2026-6pm EDT Aug 1, 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