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

Northeast Florida Regional Airport (KSGJ)

Lat: 29.96°NLon: 81.34°WElev: 3ft.

Fair

74°F

23°C

Humidity 88%
Wind Speed S 6 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 21 Jun 1:56 am EDT
Extended Forecast for

Saint Augustine FL

  • Overnight

    Overnight: Mostly cloudy, with a low around 73. Southwest wind around 5 mph.

    Low: 73 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then showers and thunderstorms likely after 2pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 90. Heat index values as high as 101. West wind 6 to 9 mph becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Partly Sunny
    then Heavy
    Rain

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 74. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Heat index values as high as 109. Light west wind becoming southwest 5 to 9 mph in the morning.

    High: 94 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 77. Southwest wind around 6 mph.

    Low: 77 °F

    Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 76. Chance of precipitation is 20%.

    Low: 76 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76.

    Low: 76 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 73. Southwest wind around 5 mph.
Sunday
A slight chance of showers, then showers and thunderstorms likely after 2pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 90. Heat index values as high as 101. West wind 6 to 9 mph becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 74. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Heat index values as high as 109. Light west wind becoming southwest 5 to 9 mph in the morning.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 77. Southwest wind around 6 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96.
Tuesday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 76. Chance of precipitation is 20%.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76.
Thursday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Saturday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Augustine FL
 29.9°N 81.33°W
Last Update:
2:21 am EDT Jun 21, 2026
Forecast Valid:
2am EDT Jun 21, 2026-6pm EDT Jun 27, 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