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

Keystone Heights Airport (K42J)

Lat: 29.84°NLon: 82.05°WElev: 197ft.

Mostly Cloudy

90°F

32°C

Humidity 63%
Wind Speed NE 8 G 14 mph
Barometer 30.05 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 1 Sep 12:55 pm EDT
Extended Forecast for

Keystone Heights FL

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly between 2pm and 4pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 90. Heat index values as high as 102. Northeast wind around 10 mph, with gusts as high as 16 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Heavy Rain

  • Tonight

    Tonight: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 74. East wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers, then showers and thunderstorms likely after 11am. Partly sunny, with a high near 89. Heat index values as high as 103. Light northeast wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 74. East wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 74 °F

    T-storms
    Likely then
    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 90. East wind 3 to 8 mph. Winds could gust as high as 16 mph. Chance of precipitation is 80%.

    High: 90 °F

    Chance
    T-storms then
    T-storms

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 8pm. Low around 74. Chance of precipitation is 80%.

    Low: 74 °F

    T-storms then
    Partly Cloudy

  • Friday

    Friday: Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 70%.

    High: 92 °F

    Mostly Sunny
    then T-storms
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 8pm. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.

    Low: 74 °F

    T-storms
    Likely then
    Partly Cloudy

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 93.

    High: 93 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly between 2pm and 4pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 90. Heat index values as high as 102. Northeast wind around 10 mph, with gusts as high as 16 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 74. East wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 30%.
Wednesday
A slight chance of showers, then showers and thunderstorms likely after 11am. Partly sunny, with a high near 89. Heat index values as high as 103. Light northeast wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 74. East wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 60%.
Thursday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 90. East wind 3 to 8 mph. Winds could gust as high as 16 mph. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm before 8pm. Low around 74. Chance of precipitation is 80%.
Friday
Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 70%.
Friday Night
Showers and thunderstorms likely before 8pm. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 93.
Saturday Night
Mostly cloudy, with a low around 74.
Sunday
Showers and thunderstorms likely. Partly sunny, with a high near 93. Chance of precipitation is 60%.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.
Labor Day
Showers and thunderstorms likely. Partly sunny, with a high near 90. Chance of precipitation is 60%.
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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:
2:21 am EDT Sep 1, 2026
Forecast Valid:
1pm EDT Sep 1, 2026-6pm EDT Sep 7, 2026
 
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Additional Resources

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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