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

Jacksonville International Airport (KJAX)

Lat: 30.5°NLon: 81.69°WElev: 23ft.

Mostly Cloudy

78°F

26°C

Humidity 93%
Wind Speed Calm
Barometer 30.03 in (1016.9 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 1 Sep 11:56 pm EDT
Extended Forecast for

Callahan FL

  • Overnight

    Overnight: Mostly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers between 9am and 10am, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 89. Heat index values as high as 100. East wind 5 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 2am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 74. East wind 5 to 9 mph becoming calm after midnight. Chance of precipitation is 20%.

    Low: 74 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Heat index values as high as 100. East wind 5 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 60%.

    High: 88 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 75. East wind 5 to 7 mph becoming calm in the evening.

    Low: 75 °F

    Partly Cloudy

  • Friday

    Friday: Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 90. Chance of precipitation is 70%.

    High: 90 °F

    Chance
    Showers then
    T-storms
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely then
    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 60%.

    High: 91 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely then
    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 74. Calm wind.
Wednesday
A slight chance of showers between 9am and 10am, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 89. Heat index values as high as 100. East wind 5 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Wednesday Night
A slight chance of showers and thunderstorms before 2am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 74. East wind 5 to 9 mph becoming calm after midnight. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Heat index values as high as 100. East wind 5 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 60%.
Thursday Night
Partly cloudy, with a low around 75. East wind 5 to 7 mph becoming calm in the evening.
Friday
Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 90. Chance of precipitation is 70%.
Friday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 73. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 73. Chance of precipitation is 60%.
Sunday
Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 93. Chance of precipitation is 70%.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Labor Day
Showers and thunderstorms likely. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Callahan FL
 30.56°N 81.83°W
Last Update:
12:11 am EDT Sep 2, 2026
Forecast Valid:
12am EDT Sep 2, 2026-6pm EDT Sep 8, 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