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.

Partly Cloudy

77°F

25°C

Humidity 94%
Wind Speed NW 3 mph
Barometer 29.95 in (1014.3 mb)
Dewpoint 75°F (24°C)
Visibility 9.00 mi
Heat Index78°F (26°C)
Last update 18 Aug 8:56 am EDT
Extended Forecast for

Callahan FL

  • Today

    Today: Showers and thunderstorms likely, mainly between 2pm and 4pm. Mostly cloudy, with a high near 90. Heat index values as high as 102. Light north wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Chance
    Showers then
    T-storms
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 9pm. Partly cloudy, with a low around 75. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    Showers then
    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 91. Northeast wind 5 to 13 mph, with gusts as high as 20 mph.

    High: 91 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 75. Northeast wind 3 to 7 mph.

    Low: 75 °F

    Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 11am. Sunny, with a high near 93. North wind 8 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 50%.

    High: 93 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 8pm. Mostly clear, with a low around 75. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

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

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly clear, with a low around 75.

    Low: 75 °F

    Chance
    T-storms

  • Friday

    Friday: Showers and thunderstorms, mainly after 2pm. High near 93. Chance of precipitation is 80%.

    High: 93 °F

    Slight Chance
    T-storms then
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly between 2pm and 4pm. Mostly cloudy, with a high near 90. Heat index values as high as 102. Light north wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 9pm. Partly cloudy, with a low around 75. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Tuesday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 91. Northeast wind 5 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 75. Northeast wind 3 to 7 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 11am. Sunny, with a high near 93. North wind 8 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of thunderstorms before 8pm. Mostly clear, with a low around 75. Chance of precipitation is 30%.
Thursday
A 40 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 95.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly clear, with a low around 75.
Friday
Showers and thunderstorms, mainly after 2pm. High near 93. Chance of precipitation is 80%.
Friday Night
Showers and thunderstorms before 2am, then a slight chance of showers. Low around 75. Chance of precipitation is 80%.
Saturday
Showers and thunderstorms. High near 91. Chance of precipitation is 80%.
Saturday Night
Showers and thunderstorms. Low around 74. Chance of precipitation is 80%.
Sunday
Showers and thunderstorms. High near 91. Chance of precipitation is 80%.
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ABOUT THIS FORECAST

 
Point Forecast:
Callahan FL
 30.56°N 81.83°W
Last Update:
5:36 am EDT Aug 18, 2025
Forecast Valid:
9am EDT Aug 18, 2025-6pm EDT Aug 24, 2025
 
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