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

Extreme Heat Risk this Week

Extreme heat and little overnight relief will lead to an extreme risk for heat-related impacts through the rest of the week. Extreme Heat Warning in effect on Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Fernandina Beach Municipal Airport (KFHB)

Lat: 30.61°NLon: 81.46°WElev: 16ft.

Fair

86°F

30°C

Humidity 70%
Wind Speed NA
Barometer 30.00 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 18 Aug 9:35 am EDT
Extended Forecast for

Saint Marys GASimilar City Names

Extreme Heat Warning August 18, 11:00am until August 18, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: A slight chance of showers between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 113. West wind around 8 mph. Chance of precipitation is 30%.

    High: 97 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 78. West wind around 8 mph. Chance of precipitation is 30%.

    Low: 78 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Heat index values as high as 107. West wind around 5 mph becoming light and variable in the afternoon.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 76. Southwest wind 3 to 5 mph.

    Low: 76 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 96. Light and variable wind becoming southeast around 6 mph in the afternoon.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76.

    Low: 76 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 75.

    Low: 75 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 93. Chance of precipitation is 60%.

    High: 93 °F

    Mostly Sunny
    then T-storms
    Likely

Detailed Forecast

Today
A slight chance of showers between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 113. West wind around 8 mph. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 78. West wind around 8 mph. Chance of precipitation is 30%.
Wednesday
Sunny and hot, with a high near 97. Heat index values as high as 107. West wind around 5 mph becoming light and variable in the afternoon.
Wednesday Night
A 10 percent chance of showers and thunderstorms before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 76. Southwest wind 3 to 5 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 96. Light and variable wind becoming southeast around 6 mph in the afternoon.
Thursday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76.
Friday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95.
Friday Night
A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 75.
Saturday
Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 93. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys GASimilar City Names
 30.77°N 81.57°W
Last Update:
7:21 am EDT Aug 18, 2026
Forecast Valid:
9am EDT Aug 18, 2026-6pm EDT Aug 24, 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