Current conditions at

Northeast Florida Regional Airport (KSGJ)

Lat: 29.96°NLon: 81.34°WElev: 3ft.

Fair

87°F

31°C

Humidity 72%
Wind Speed E 6 mph
Barometer 30.20 in (1022.7 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 15 Aug 11:56 am EDT
Extended Forecast for

Saint Augustine FL

Heat Advisory August 16, 11:00am until August 16, 08:00pm
Heat Advisory August 15, 12:47pm until August 15, 08:00pm
Click here for hazard details and duration
Heat Advisory
Heat Advisory
  •  
    Heat Advisory August 15, 12:47pm until August 15, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • This Afternoon

    High: 93 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 77. Southwest wind 5 to 10 mph, with gusts as high as 16 mph.

    Low: 77 °F

    Partly Cloudy

  • Sunday

    Sunday: A 10 percent chance of showers and thunderstorms after 4pm.  Mostly sunny and hot, with a high near 95. Heat index values as high as 110. West wind 6 to 9 mph becoming south in the afternoon.

    High: 95 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 10 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 77. South wind 6 to 9 mph becoming west after midnight.

    Low: 77 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 97. West wind 7 to 10 mph, with gusts as high as 16 mph.

    High: 97 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am.  Partly cloudy, with a low around 79. Chance of precipitation is 30%.

    Low: 79 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 98.

    High: 98 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 10 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 93. Heat index values as high as 109. Southwest wind 7 to 10 mph becoming east. Winds could gust as high as 16 mph.
Tonight
Partly cloudy, with a low around 77. Southwest wind 5 to 10 mph, with gusts as high as 16 mph.
Sunday
A 10 percent chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 95. Heat index values as high as 110. West wind 6 to 9 mph becoming south in the afternoon.
Sunday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 77. South wind 6 to 9 mph becoming west after midnight.
Monday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 97. West wind 7 to 10 mph, with gusts as high as 16 mph.
Monday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 79. Chance of precipitation is 30%.
Tuesday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 98.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 78.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 97.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 77.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Augustine FL
 29.9°N 81.33°W
11:56 am EDT Aug 15, 2026
12pm EDT Aug 15, 2026-6pm EDT Aug 21, 2026
 
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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