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

Coastal Flood Warnings and Heavy Rainfall this Weekend - Updated Briefing

Coastal Flood Warnings have been issued through early next week along portions of the northeast Florida Atlantic coast and within the St. Johns River basin. Dangerous marine and surf conditions will continue, with heavy rainfall possible this weekend, which may exacerbate flooding at coastal locations. Please monitor this briefing for the latest updates this weekend and early next week. Read More >

Current conditions at

Keystone Airpark (K42J)

Lat: 29.84°NLon: 82.05°WElev: 197ft.

Overcast

72°F

22°C

Humidity 94%
Wind Speed NE 8 G 14 mph
Barometer 30.06 in
Dewpoint 70°F (21°C)
Visibility 9.00 mi
Last update 4 Oct 1:55 am EDT
Extended Forecast for

Keystone Heights FL

  • Overnight

    Overnight: A 20 percent chance of showers. Mostly cloudy, with a low around 68. Northeast wind around 8 mph.

    Low: 68 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 83. Breezy, with an east wind 8 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 72. East wind 7 to 10 mph, with gusts as high as 16 mph.

    Low: 72 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Breezy, with an east wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    High: 85 °F

    Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely, with thunderstorms also possible after 11pm. Mostly cloudy, with a low around 73. East wind 9 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely then
    Chance
    Showers

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 8am. Mostly sunny, with a high near 85.

    High: 85 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 68. Northeast wind around 8 mph.
Saturday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 83. Breezy, with an east wind 8 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 72. East wind 7 to 10 mph, with gusts as high as 16 mph.
Sunday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Breezy, with an east wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Sunday Night
Showers likely, with thunderstorms also possible after 11pm. Mostly cloudy, with a low around 73. East wind 9 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Monday Night
A 30 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 71.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 8am. Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 70.
Wednesday
A 20 percent chance of showers. Sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 69.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. Breezy.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Keystone Heights FL
 29.78°N 82.03°W
Last Update:
1:26 am EDT Oct 4, 2025
Forecast Valid:
2am EDT Oct 4, 2025-6pm EDT Oct 10, 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