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

81°F

27°C

Humidity 70%
Wind Speed NE 15 G 22 mph
Barometer 30.06 in
Dewpoint 70°F (21°C)
Visibility 7.00 mi
Heat Index85°F (29°C)
Last update 3 Oct 5:15 pm EDT
Extended Forecast for

Keystone Heights FL

  • Tonight

    Tonight: Partly cloudy, with a low around 70. Breezy, with a northeast wind 10 to 17 mph, with gusts as high as 28 mph.

    Low: 70 °F

    Partly Cloudy
    and Breezy
    then Mostly
    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. East wind 7 to 10 mph, with gusts as high as 21 mph.

    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

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 2am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 70. Breezy, with a northeast wind 10 to 17 mph, with gusts as high as 28 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. East wind 7 to 10 mph, with gusts as high as 21 mph.
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 slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
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.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

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:
5pm EDT Oct 3, 2025-6pm EDT Oct 10, 2025
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation