National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

36°F

2°C

Humidity 48%
Wind Speed NE 12 mph
Barometer 30.63 in
Dewpoint 18°F (-8°C)
Visibility 9.00 mi
Wind Chill28°F (-2°C)
Last update 23 Feb 8:49 am CST
Extended Forecast for

Collinsville TX

  • Today

    Today: Sunny, with a high near 55. Northeast wind around 5 mph becoming south southeast in the afternoon.

    High: 55 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 36. South wind 5 to 10 mph.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 71. South southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 71 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77. South wind 5 to 10 mph.

    High: 77 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51. South wind around 5 mph becoming calm.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 70. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 41. North wind around 5 mph becoming calm after midnight.

    Low: 41 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 71. Calm wind becoming south around 5 mph in the morning.

    High: 71 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 55. Northeast wind around 5 mph becoming south southeast in the afternoon.
Tonight
Mostly clear, with a low around 36. South wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 71. South southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 54. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 77. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 51. South wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 70. North wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Clear, with a low around 41. North wind around 5 mph becoming calm after midnight.
Friday
Sunny, with a high near 71. Calm wind becoming south around 5 mph in the morning.
Friday Night
Mostly clear, with a low around 47.
Saturday
Sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Collinsville TX
 33.57°N 96.9°W (Elev. 722 ft)
Last Update:
5:06 am CST Feb 23, 2026
Forecast Valid:
9am CST Feb 23, 2026-6pm CST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation