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

73°F

23°C

Humidity 100%
Wind Speed SW 5 mph
Barometer 30.04 in
Dewpoint 73°F (23°C)
Visibility 8.00 mi
Last update 19 Jun 6:55 pm EDT
Extended Forecast for

5 Miles SSW Middleburg FL

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 76. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 76 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms, mainly before 5pm, then showers and possibly a thunderstorm after 5pm. High near 90. Heat index values as high as 102. West wind 6 to 8 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Chance
    T-storms then
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm. Low around 73. Light and variable wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 73 °F

    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 102. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74. Light southwest wind.

    Low: 74 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 76.

    Low: 76 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76.

    Low: 76 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 76. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday
Showers and thunderstorms, mainly before 5pm, then showers and possibly a thunderstorm after 5pm. High near 90. Heat index values as high as 102. West wind 6 to 8 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm. Low around 73. Light and variable wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 102. Calm wind becoming west 5 to 7 mph in the afternoon.
Sunday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74. Light southwest wind.
Monday
Sunny and hot, with a high near 95.
Monday Night
Partly cloudy, with a low around 76.
Tuesday
Sunny and hot, with a high near 96.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Middleburg FL
 29.98°N 81.95°W
Last Update:
2:21 pm EDT Jun 19, 2026
Forecast Valid:
7pm EDT Jun 19, 2026-6pm EDT Jun 26, 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