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

Hazardous Weather Conditions

Current conditions at

Keystone Heights Airport (K42J)

Lat: 29.84°NLon: 82.05°WElev: 197ft.

Mostly Cloudy

77°F

25°C

Humidity 94%
Wind Speed S 6 mph
Barometer 30.13 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 12 Jul 12:15 am EDT
Extended Forecast for

4 Miles NNW Keystone Heights FL

Heat Advisory July 12, 11:00am until July 12, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Partly cloudy, with a low around 75. Light southwest wind.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Increasing clouds, with a high near 94. Heat index values as high as 106. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 16 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 94 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 74. Southwest wind 5 to 9 mph.

    Low: 74 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then showers and thunderstorms likely after 2pm. Mostly cloudy, with a high near 94. Heat index values as high as 106. Southwest wind 5 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 94 °F

    Showers
    Likely then
    T-storms
    Likely

  • Monday Night

    Monday Night: Thunderstorms likely before 8pm. Mostly cloudy, with a low around 74. Southwest wind 5 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 60%.

    Low: 74 °F

    T-storms
    Likely then
    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 11am. Mostly sunny and hot, with a high near 95. Chance of precipitation is 30%.

    High: 95 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

  • Wednesday

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

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75.

    Low: 75 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 75. Light southwest wind.
Sunday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Increasing clouds, with a high near 94. Heat index values as high as 106. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 16 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 74. Southwest wind 5 to 9 mph.
Monday
Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then showers and thunderstorms likely after 2pm. Mostly cloudy, with a high near 94. Heat index values as high as 106. Southwest wind 5 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Monday Night
Thunderstorms likely before 8pm. Mostly cloudy, with a low around 74. Southwest wind 5 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 60%.
Tuesday
A chance of showers, with thunderstorms also possible after 11am. Mostly sunny and hot, with a high near 95. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 74.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 96.
Wednesday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75.
Thursday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 96.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 96.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Keystone Heights FL
 29.83°N 82.07°W
Last Update:
12:17 am EDT Jul 12, 2026
Forecast Valid:
12am EDT Jul 12, 2026-6pm EDT Jul 18, 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