Heat Wave Persists Over the Central U.S.; Significant Flooding Expected in the Northern Mid-Atlantic Tuesday

Dangerous and extreme heat will remain across portions of the Central U.S. this week, persisting across the Mid to Lower Mississippi Valleys, Gulf Coast, Southern Plains and portions of Texas. A heat wave over the Southwest will intensify late this week. Severe thunderstorms and flash flooding will spread from the Great Lakes/Ohio Valley to the Mid-Atlantic and Northeast the next few days. Read More >

Hazardous Weather Conditions

Current conditions at

Gainesville, Gainesville Municipal Airport (KGLE)

Lat: 33.65°NLon: 97.2°WElev: 840ft.

Fair

79°F

26°C

Humidity 74%
Wind Speed S 3 mph
Barometer 29.87 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 28 Jul 2:55 am CDT
Extended Forecast for

Collinsville TX

Heat Advisory July 28, 03:10am until July 28, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 28, 03:10am until July 28, 08:00pm

    NOW until 8:00pm Tue

    Heat Advisory

  • Overnight

    Low: 81 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 101. Heat index values as high as 107. South wind 5 to 10 mph.

    High: 101 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 78. South wind around 5 mph.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. Heat index values as high as 106. South wind around 5 mph.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 79. South southeast wind around 5 mph.

    Low: 79 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny and hot, with a high near 100. South wind around 5 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 80. South wind 5 to 10 mph.

    Low: 80 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny and hot, with a high near 102. Southwest wind 5 to 10 mph.

    High: 102 °F

    Hot

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 81. South wind around 5 mph.
Tuesday
Sunny and hot, with a high near 101. Heat index values as high as 107. South wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 78. South wind around 5 mph.
Wednesday
Sunny and hot, with a high near 100. Heat index values as high as 106. South wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 79. South southeast wind around 5 mph.
Thursday
Sunny and hot, with a high near 100. South wind around 5 mph.
Thursday Night
Mostly clear, with a low around 80. South wind 5 to 10 mph.
Friday
Mostly sunny and hot, with a high near 102. Southwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 79. South wind 5 to 10 mph.
Saturday
Sunny, with a high near 98.
Saturday Night
Mostly clear, with a low around 72.
Sunday
Sunny, with a high near 95.
Sunday Night
Clear, with a low around 73.
Monday
Sunny, with a high near 97.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Collinsville TX
 33.57°N 96.9°W (Elev. 722 ft)
1:26 am CDT Jul 28, 2026
3am CDT Jul 28, 2026-6pm CDT Aug 3, 2026
 
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