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

Hazardous Weather Conditions

Current conditions at

Tallahassee International Airport (KTLH)

Lat: 30.4°NLon: 84.35°WElev: 83ft.

Fair

80°F

27°C

Humidity 87%
Wind Speed W 6 mph
Barometer 30.04 in (1017.2 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 12 Aug 1:53 am EDT
Extended Forecast for

Saint Marks FL

Heat Advisory August 12, 01:00pm until August 12, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 76. Calm wind.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 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 southwest around 5 mph in the morning.

    High: 96 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 77. West southwest wind around 5 mph becoming calm after midnight.

    Low: 77 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96. Heat index values as high as 112. West northwest wind around 5 mph becoming southwest in the afternoon.

    High: 96 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. Southwest wind around 5 mph becoming calm in the evening.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 97.

    High: 97 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

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

    Low: 77 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96.

    High: 96 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 77.

    Low: 77 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 76. Calm wind.
Wednesday
A 20 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 southwest around 5 mph in the morning.
Wednesday Night
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 77. West southwest wind around 5 mph becoming calm after midnight.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96. Heat index values as high as 112. West northwest wind around 5 mph becoming southwest in the afternoon.
Thursday Night
Mostly clear, with a low around 77. Southwest wind around 5 mph becoming calm in the evening.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 97.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 77.
Saturday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 77.
Sunday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 96.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 98.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Marks FL
 30.15°N 84.2°W (Elev. 3 ft)
Last Update:
1:15 am EDT Aug 12, 2026
Forecast Valid:
2am EDT Aug 12, 2026-6pm EDT Aug 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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