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 >

Current conditions at

Northeast Florida Regional Airport (KSGJ)

Lat: 29.96°NLon: 81.34°WElev: 3ft.

Fair

84°F

29°C

Humidity 77%
Wind Speed W 8 mph
Barometer 30.03 in (1017.0 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 17 Aug 10:56 pm EDT
Extended Forecast for

4 Miles N St. Augustine Airport FL

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

    Tonight: Mostly clear, with a low around 78. West wind around 10 mph, with gusts as high as 16 mph.

    Low: 78 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny, with a high near 94. Heat index values as high as 114. West wind 9 to 11 mph, with gusts as high as 17 mph.

    High: 94 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 10pm.  Mostly cloudy, with a low around 78. West wind 8 to 10 mph, with gusts as high as 16 mph.

    Low: 78 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 93. Heat index values as high as 111. West wind 7 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 16 mph.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 8pm.  Mostly cloudy, with a low around 78. Southwest wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 78.

    Low: 78 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 91.

    High: 91 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 77.

    Low: 77 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 78. West wind around 10 mph, with gusts as high as 16 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 94. Heat index values as high as 114. West wind 9 to 11 mph, with gusts as high as 17 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 78. West wind 8 to 10 mph, with gusts as high as 16 mph.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 111. West wind 7 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 16 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 78. Southwest wind 6 to 13 mph, with gusts as high as 20 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.
Thursday Night
Partly cloudy, with a low around 78.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 77.
Saturday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N St. Augustine Airport FL
 30.02°N 81.34°W
8:07 pm EDT Aug 17, 2026
11pm EDT Aug 17, 2026-6pm EDT Aug 24, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database