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

Hazardous Weather Conditions

Current conditions at

Titusville (KTIX)

Lat: 28.52°NLon: 80.8°WElev: 36ft.

Clear

N/A

Humidity NA
Wind Speed Calm
Barometer 29.97 in
Dewpoint N/A
Visibility 7.00 mi
Last update 19 Aug 6:47 am EDT
Extended Forecast for

Port St. John FL

Heat Advisory August 19, 10:00am until August 19, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Showers and thunderstorms likely, mainly after 4pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 112. West wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 97 °F

    Sunny then
    T-storms
    Likely

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 77. West wind around 5 mph becoming calm.

    Low: 77 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 96. Heat index values as high as 110. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 96 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 77. Southeast wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 77 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms likely after 2pm. Mostly sunny and hot, with a high near 95. South southwest wind around 5 mph. Chance of precipitation is 60%.

    High: 95 °F

    Mostly Sunny
    then T-storms
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 77. South southeast wind around 5 mph. Chance of precipitation is 60%.

    Low: 77 °F

    T-storms
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: Showers and thunderstorms likely after 2pm. Mostly sunny and hot, with a high near 95. South southwest wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 95 °F

    Sunny then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 76. South wind around 5 mph. Chance of precipitation is 60%.

    Low: 76 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Southwest wind around 5 mph.

    High: 94 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 4pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 112. West wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 30 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 77. West wind around 5 mph becoming calm.
Thursday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 96. Heat index values as high as 110. Calm wind becoming south southeast around 5 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 77. Southeast wind around 5 mph becoming calm. Chance of precipitation is 30%.
Friday
Showers and thunderstorms likely after 2pm. Mostly sunny and hot, with a high near 95. South southwest wind around 5 mph. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 77. South southeast wind around 5 mph. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely after 2pm. Mostly sunny and hot, with a high near 95. South southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 76. South wind around 5 mph. Chance of precipitation is 60%.
Sunday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Southwest wind around 5 mph.
Sunday 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.
Monday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 94. Southwest wind around 5 mph.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77. South wind around 5 mph.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. Calm wind becoming south around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port St. John FL
 28.48°N 80.79°W (Elev. 23 ft)
Last Update:
7:29 am EDT Aug 19, 2026
Forecast Valid:
7am EDT Aug 19, 2026-6pm EDT Aug 25, 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