Heat Builds in the West; Extremely Critical Fire Weather in the Northwest
A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >
Current conditions at
Sherman/Denison, Grayson County Airport (KGYI)
Lat: 33.72°NLon: 96.67°WElev: 748ft.
Fair
81°F
27°C
| Humidity | 50% |
| Wind Speed | NE 5 mph |
| Barometer | 29.92 in |
| Dewpoint | 60°F (16°C) |
| Visibility | 10.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 1 Aug 9:55 pm CDT |
Extended Forecast for
4 Miles NE Collinsville TX
Tonight
Low: 70 °F
Clear
Sunday
High: 96 °F
Sunny
Sunday Night
Low: 70 °F
Clear
Monday
High: 98 °F
Sunny
Monday Night
Low: 74 °F
Clear
Tuesday
High: 100 °F
Hot
Tuesday Night
Low: 77 °F
Mostly Clear
Wednesday
High: 99 °F
Hot
Wednesday Night
Low: 77 °F
Mostly Clear
Detailed Forecast
Tonight
Clear, with a low around 70. North northeast wind around 5 mph.
Sunday
Sunny, with a high near 96. North wind around 5 mph.
Sunday Night
Clear, with a low around 70. North northeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 98. Calm wind becoming south southeast around 5 mph.
Monday Night
Clear, with a low around 74. East southeast wind around 5 mph.
Tuesday
Sunny and hot, with a high near 100. South wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 77. Southeast wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 99. South southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 77. South wind around 10 mph.
Thursday
Sunny, with a high near 98.
Thursday Night
Clear, with a low around 77.
Friday
Sunny, with a high near 98.
Friday Night
Clear, with a low around 77.
Saturday
Sunny, with a high near 98.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles NE Collinsville TX
33.59°N 96.84°W (Elev. 758 ft)
33.59°N 96.84°W (Elev. 758 ft)
6:13 pm CDT Aug 1, 2026
10pm CDT Aug 1, 2026-6pm CDT Aug 8, 2026
Additional Resources
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