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

Hazardous Weather Conditions

Current conditions at

Kissimmee Gateway Airport (KISM)

Lat: 28.29°NLon: 81.44°WElev: 79ft.

Fair

80°F

27°C

Humidity 90%
Wind Speed W 6 mph
Barometer 30.04 in (1017.2 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 18 Aug 3:56 am EDT
Extended Forecast for

Williamsburg FL

Heat Advisory August 18, 10:00am until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Sunny and hot, with a high near 97. Heat index values as high as 109. West wind 5 to 10 mph.

    High: 97 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 79. West southwest wind 5 to 10 mph.

    Low: 79 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly between 2pm and 4pm. Increasing clouds and hot, with a high near 96. Heat index values as high as 106. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 96 °F

    Chance
    Showers then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 78. West southwest wind around 5 mph. Chance of precipitation is 60%.

    Low: 78 °F

    T-storms
    Likely then
    Slight Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny and hot, with a high near 96. West southwest wind around 5 mph. Chance of precipitation is 60%.

    High: 96 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 77. Southwest wind around 5 mph. Chance of precipitation is 60%.

    Low: 77 °F

    T-storms
    Likely then
    Slight Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95. Southwest wind around 5 mph.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 77. Southwest wind around 5 mph.

    Low: 77 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 93. West southwest wind 5 to 10 mph.

    High: 93 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Sunny and hot, with a high near 97. Heat index values as high as 109. West wind 5 to 10 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 79. West southwest wind 5 to 10 mph.
Wednesday
Showers and thunderstorms likely, mainly between 2pm and 4pm. Increasing clouds and hot, with a high near 96. Heat index values as high as 106. West wind 5 to 10 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 before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 78. West southwest wind around 5 mph. Chance of precipitation is 60%.
Thursday
A slight chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny and hot, with a high near 96. West southwest wind around 5 mph. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 77. Southwest wind around 5 mph. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95. Southwest wind around 5 mph.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 77. Southwest wind around 5 mph.
Saturday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 93. West southwest wind 5 to 10 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 76. South southwest wind around 5 mph.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. Southwest wind 5 to 10 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77. South southwest wind around 5 mph.
Monday
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 95. South southwest wind around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Williamsburg FL
 28.4°N 81.47°W (Elev. 112 ft)
Last Update:
2:39 am EDT Aug 18, 2026
Forecast Valid:
4am EDT Aug 18, 2026-6pm EDT Aug 24, 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