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

26°C

79°F

Humidity 85%
Wind Speed SW 9 km/h
Barometer 1017.9 mb (30.06 in)
Dewpoint 23°C (74°F)
Visibility 16 km
Heat Index28°C (83°F)
Last update 13 Jul 12:56 am EDT
Extended Forecast for

Callahan FL

  • Overnight

    Overnight: Mostly cloudy, with a low around 24. Calm wind.

    Low: 24 °C

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then showers and thunderstorms likely after 2pm. Mostly sunny and hot, with a high near 36. Heat index values as high as 42. Northwest wind 8 to 14 km/h. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.

    High: 36 °C

    Mostly Sunny
    then T-storms
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Mostly cloudy, with a low around 23. South wind 5 to 8 km/h becoming west after midnight. Chance of precipitation is 40%.

    Low: 23 °C

    Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: Showers and thunderstorms likely after 2pm. Mostly sunny and hot, with a high near 35. Heat index values as high as 42. West wind 5 to 10 km/h becoming north in the afternoon. Chance of precipitation is 70%.

    High: 35 °C

    Sunny then
    T-storms
    Likely

  • Monday Night

    Monday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 23. Calm wind. Chance of precipitation is 60%.

    Low: 23 °C

    T-storms
    Likely then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 33. Chance of precipitation is 70%.

    High: 33 °C

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 23. Chance of precipitation is 60%.

    Low: 23 °C

    T-storms
    Likely then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 33. Chance of precipitation is 80%.

    High: 33 °C

    Chance
    Showers then
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Low around 23. Chance of precipitation is 80%.

    Low: 23 °C

    T-storms then
    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 24. Calm wind.
Sunday
A slight chance of showers, then showers and thunderstorms likely after 2pm. Mostly sunny and hot, with a high near 36. Heat index values as high as 42. Northwest wind 8 to 14 km/h. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.
Sunday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Mostly cloudy, with a low around 23. South wind 5 to 8 km/h becoming west after midnight. Chance of precipitation is 40%.
Monday
Showers and thunderstorms likely after 2pm. Mostly sunny and hot, with a high near 35. Heat index values as high as 42. West wind 5 to 10 km/h becoming north in the afternoon. Chance of precipitation is 70%.
Monday Night
Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 23. Calm wind. Chance of precipitation is 60%.
Tuesday
A slight chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 33. Chance of precipitation is 70%.
Tuesday Night
Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 23. Chance of precipitation is 60%.
Wednesday
A slight chance of thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 33. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Low around 23. Chance of precipitation is 80%.
Thursday
A slight chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 33. Chance of precipitation is 80%.
Thursday Night
Showers and thunderstorms. Low around 24. Chance of precipitation is 80%.
Friday
Showers and thunderstorms likely. Mostly sunny, with a high near 34. Chance of precipitation is 70%.
Friday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 23. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely. Mostly sunny, with a high near 34. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Callahan FL
 30.56°N 81.83°W
Last Update:
1:26 am EDT Jul 13, 2025
Forecast Valid:
1am EDT Jul 13, 2025-6pm EDT Jul 19, 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