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.

Mostly Cloudy

82°F

28°C

Humidity 58%
Wind Speed NE 20 G 26 mph
Barometer 30.09 in
Dewpoint 66°F (19°C)
Visibility 8.00 mi
Heat Index84°F (29°C)
Last update 3 Oct 1:55 pm EDT
Extended Forecast for

Keystone Heights FL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 84. Windy, with a northeast wind 17 to 20 mph, with gusts as high as 29 mph.

    High: 84 °F

    Mostly Sunny
    and Windy

  • Tonight

    Tonight: Partly cloudy, with a low around 70. Northeast wind 10 to 13 mph, with gusts as high as 24 mph.

    Low: 70 °F

    Partly Cloudy

  • Saturday

    Saturday: A 50 percent chance of showers. Partly sunny, with a high near 83. Breezy, with an east wind 10 to 18 mph, with gusts as high as 29 mph. New precipitation amounts between a quarter and half of an inch possible.

    High: 83 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 72. Northeast wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Partly sunny, with a high near 84. East wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.

    High: 84 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    Showers

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Chance of precipitation is 70%.

    High: 82 °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 50 percent chance of showers and thunderstorms, mainly after 8am. Mostly sunny, with a high near 85.

    High: 85 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 84. Windy, with a northeast wind 17 to 20 mph, with gusts as high as 29 mph.
Tonight
Partly cloudy, with a low around 70. Northeast wind 10 to 13 mph, with gusts as high as 24 mph.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 83. Breezy, with an east wind 10 to 18 mph, with gusts as high as 29 mph. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
A slight chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 72. Northeast wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Partly sunny, with a high near 84. East wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Chance of precipitation is 70%.
Monday Night
A 30 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 71.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 8am. Mostly sunny, with a high near 85.
Tuesday Night
A 20 percent chance of showers before 2am. Partly cloudy, with a low around 71.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. 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 pm EDT Oct 3, 2025
Forecast Valid:
2pm EDT Oct 3, 2025-6pm EDT Oct 9, 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