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

50°F

10°C

Humidity 20%
Wind Speed N 8 mph
Barometer 30.61 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 22 Feb 5:50 pm CST
Extended Forecast for

Collinsville TX

  • Tonight

    Tonight: Mostly clear, with a low around 28. North wind around 5 mph becoming calm in the evening.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. Calm wind becoming northeast around 5 mph.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38. South wind 5 to 10 mph.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 70. South southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 70 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 53. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79. South wind 5 to 10 mph.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. South wind 5 to 10 mph becoming north after midnight.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 68. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 39. North wind around 5 mph becoming southeast after midnight.

    Low: 39 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 28. North wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 55. Calm wind becoming northeast around 5 mph.
Monday Night
Mostly clear, with a low around 38. South wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 70. South southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 53. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 79. South wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 51. South wind 5 to 10 mph becoming north after midnight.
Thursday
Sunny, with a high near 68. North wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Clear, with a low around 39. North wind around 5 mph becoming southeast after midnight.
Friday
Sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 48.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Mostly sunny, with a high near 68.
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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:
5:07 pm CST Feb 22, 2026
Forecast Valid:
6pm CST Feb 22, 2026-6pm CST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation