Tracking Major Hurricane Erin; Hot in the Mid-Mississippi Valley

Major Hurricane Erin is tracking just north of the lower Bahamas today. Dangerous surf and rip current threats increase this week for most of the Atlantic coastline. Erin's outerbands may impact the Outer Banks later this week. Hot to extremely hot temperatures are forecast today and Tuesday from a part of the southern Plains into the central to lower Mississippi River Valley. Read More >

Current conditions at

San Antonio, Stinson Municipal Airport (KSSF)

Lat: 29.34°NLon: 98.47°WElev: 574ft.

Fair

97°F

36°C

Humidity 36%
Wind Speed SE 8 mph
Barometer 29.98 in (1013.8 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 18 Aug 1:53 pm CDT
Extended Forecast for

San Antonio, Stinson Municipal Airport TX

  • This Afternoon

    This Afternoon: Sunny and hot, with a high near 101. Heat index values as high as 105. East southeast wind around 5 mph.

    High: 101 °F

    Hot

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm.  Mostly clear, with a low around 77. East southeast wind 5 to 10 mph becoming light south southeast  after midnight.

    Low: 77 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm.  Mostly sunny and hot, with a high near 100. Heat index values as high as 103. Light and variable wind becoming east northeast 5 to 10 mph in the afternoon.

    High: 100 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am.  Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light and variable  after midnight.  Chance of precipitation is 20%.

    Low: 77 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Sunny and hot, with a high near 100. Northwest wind 5 to 10 mph becoming east northeast in the afternoon.  Chance of precipitation is 30%.

    High: 100 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light and variable  after midnight.  Chance of precipitation is 30%.

    Low: 77 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm.  Mostly sunny, with a high near 96. North northwest wind around 5 mph becoming northeast in the afternoon.  Chance of precipitation is 70%.

    High: 96 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 76. North wind around 5 mph becoming calm  in the evening.

    Low: 76 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 94. North northwest wind around 5 mph becoming east northeast in the afternoon.

    High: 94 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 101. Heat index values as high as 105. East southeast wind around 5 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 77. East southeast wind 5 to 10 mph becoming light south southeast after midnight.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 103. Light and variable wind becoming east northeast 5 to 10 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Wednesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 100. Northwest wind 5 to 10 mph becoming east northeast in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 30%.
Thursday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 96. North northwest wind around 5 mph becoming northeast in the afternoon. Chance of precipitation is 70%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. North wind around 5 mph becoming calm in the evening.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. North northwest wind around 5 mph becoming east northeast in the afternoon.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio, Stinson Municipal Airport TX
 29.35°N 98.45°W (Elev. 597 ft)
1:50 pm CDT Aug 18, 2025
2pm CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
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Additional Resources

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