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.

Fair

79°F

26°C

Humidity 88%
Wind Speed SW 7 mph
Barometer 30.02 in (1016.3 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 29 Jun 1:52 am EDT
Extended Forecast for

Jacksonville Beach FL

Heat Advisory June 29, 12:00pm until June 29, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 80. Southwest wind around 8 mph.

    Low: 80 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 91. Heat index values as high as 105. West wind 6 to 8 mph becoming east in the afternoon. Chance of precipitation is 20%.

    High: 91 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 79. South wind 5 to 9 mph becoming west after midnight.

    Low: 79 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 85. Breezy, with a northeast wind 7 to 17 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 85 °F

    Sunny then
    Slight Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 80. Breezy, with an east wind 9 to 15 mph.

    Low: 80 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. Windy.

    High: 83 °F

    Sunny and
    Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 79. Windy.

    Low: 79 °F

    Mostly Clear
    and Windy
    then Mostly
    Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 2pm. Mostly sunny, with a high near 83. Breezy.

    High: 83 °F

    Slight Chance
    T-storms and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 79.

    Low: 79 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 80. Southwest wind around 8 mph.
Monday
A slight chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 91. Heat index values as high as 105. West wind 6 to 8 mph becoming east in the afternoon. Chance of precipitation is 20%.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 79. South wind 5 to 9 mph becoming west after midnight.
Tuesday
A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 85. Breezy, with a northeast wind 7 to 17 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 80. Breezy, with an east wind 9 to 15 mph.
Wednesday
Sunny, with a high near 83. Windy.
Wednesday Night
Mostly clear, with a low around 79. Windy.
Thursday
A 20 percent chance of showers and thunderstorms before 2pm. Mostly sunny, with a high near 83. Breezy.
Thursday Night
Mostly clear, with a low around 79.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 85. Breezy.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79.
Independence Day
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Jacksonville Beach FL
 30.3°N 81.39°W
Last Update:
2:21 am EDT Jun 29, 2026
Forecast Valid:
3am EDT Jun 29, 2026-6pm EDT Jul 5, 2026
 
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