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Current conditions at
Sherman/Denison, Grayson County Airport (KGYI)
Lat: 33.72°NLon: 96.67°WElev: 748ft.
Fair
84°F
29°C
| Humidity | 56% |
| Wind Speed | S 9 mph |
| Barometer | 30.19 in |
| Dewpoint | 67°F (19°C) |
| Visibility | 10.00 mi |
| Heat Index | 86°F (30°C) |
| Last update | 17 Sep 1:35 am CDT |
Extended Forecast for
3 Miles SW Knollwood TX
Overnight
Low: 77 °F
Mostly Clear
Thursday
High: 99 °F
Sunny then
Slight Chance
T-stormsThursday Night
Low: 76 °F
Mostly Clear
Friday
High: 99 °F
Hot
Friday Night
Low: 74 °F
Mostly Clear
Saturday
High: 99 °F
Hot
Saturday Night
Low: 75 °F
Mostly Clear
Sunday
High: 98 °F
Sunny
Sunday Night
Low: 74 °F
Partly Cloudy
then Slight
Chance
Showers
Detailed Forecast
Overnight
Mostly clear, with a low around 77. South wind around 5 mph.
Thursday
A 10 percent chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 103. South wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 76. Southeast wind 5 to 10 mph.
Friday
Sunny and hot, with a high near 99. Heat index values as high as 103. South southeast wind around 5 mph.
Friday Night
Mostly clear, with a low around 74. South southeast wind around 5 mph.
Saturday
Sunny and hot, with a high near 99. South southwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 75. South wind 5 to 10 mph.
Sunday
Sunny, with a high near 98. South southwest wind 5 to 10 mph.
Sunday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 74. South wind around 5 mph.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 94. Chance of precipitation is 30%.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 71.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Tuesday Night
Mostly cloudy, with a low around 71.
Wednesday
Mostly sunny, with a high near 93.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles SW Knollwood TX
33.66°N 96.65°W (Elev. 807 ft)
33.66°N 96.65°W (Elev. 807 ft)
1:26 am CDT Sep 17, 2026
1am CDT Sep 17, 2026-6pm CDT Sep 23, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
