Widespread Damaging Winds Likely in the Northern Plains; Heat Continues in the Central and Southeast U.S.
Severe thunderstorms, heavy rainfall, and flooding are possible from the northern Rockies into the Upper Midwest. A derecho is likely across portions of the northern Plains, with several gusts expected to exceed 75 mph. Extreme heat is expected to intensify across much of the Southeast and Tennessee Valley, continuing through much of this week. Read More >
Hazardous Weather Conditions
Current conditions at
Sherman/Denison, Grayson County Airport (KGYI)
Lat: 33.72°NLon: 96.67°WElev: 748ft.
Fair
84°F
29°C
| Humidity | 70% |
| Wind Speed | S 6 mph |
| Barometer | 30.23 in |
| Dewpoint | 73°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 90°F (32°C) |
| Last update | 28 Jul 8:50 am CDT |
Extended Forecast for
3 Miles ESE Callisburg TX
Heat Advisory July 28, 12:00pm until July 29, 07:00pm
Today
High: 98 °F
Sunny
Tonight
Low: 75 °F
Clear
Tuesday
High: 100 °F
Hot
Tuesday Night
Low: 75 °F
Clear
Wednesday
High: 101 °F
Hot
Wednesday Night
Low: 76 °F
Mostly Clear
Thursday
High: 100 °F
Hot
Thursday Night
Low: 74 °F
Partly Cloudy
Friday
High: 96 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 98. Heat index values as high as 105. South southwest wind around 5 mph.
Tonight
Clear, with a low around 75. South wind around 5 mph.
Tuesday
Sunny and hot, with a high near 100. Heat index values as high as 105. South southwest wind around 5 mph.
Tuesday Night
Clear, with a low around 75. South southeast wind around 5 mph becoming calm.
Wednesday
Sunny and hot, with a high near 101. Calm wind becoming southwest around 5 mph.
Wednesday Night
Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm.
Thursday
Sunny and hot, with a high near 100. Southwest wind around 5 mph becoming northeast in the afternoon.
Thursday Night
Partly cloudy, with a low around 74. Northeast wind around 5 mph.
Friday
Mostly sunny, with a high near 96. Northeast wind around 5 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 92.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Additional Forecasts and Information
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Point Forecast:
3 Miles ESE Callisburg TX
33.68°N 96.98°W (Elev. 846 ft)
33.68°N 96.98°W (Elev. 846 ft)
7:46 am CDT Jul 28, 2025
9am CDT Jul 28, 2025-6pm CDT Aug 3, 2025
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