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

64°F

18°C

Humidity 26%
Wind Speed S 8 mph
Barometer 30.33 in
Dewpoint 28°F (-2°C)
Visibility 9.00 mi
Last update 12 Jan 3:50 pm CST
Extended Forecast for

Collinsville TX

  • Tonight

    Tonight: Partly cloudy, with a low around 37. South southwest wind around 5 mph.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66. Southwest wind 5 to 10 mph.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42. Southwest wind 5 to 10 mph becoming north northwest after midnight.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 59. North wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 59 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 29. North wind 10 to 15 mph becoming light north northwest after midnight. Winds could gust as high as 20 mph.

    Low: 29 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 53. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 35. South wind around 5 mph becoming west northwest after midnight.

    Low: 35 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. Northwest wind around 5 mph.

    Low: 31 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 37. South southwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 66. Southwest wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 42. Southwest wind 5 to 10 mph becoming north northwest after midnight.
Wednesday
Mostly sunny, with a high near 59. North wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 29. North wind 10 to 15 mph becoming light north northwest after midnight. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 53. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 35. South wind around 5 mph becoming west northwest after midnight.
Friday
Sunny, with a high near 58. North wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 31. Northwest wind around 5 mph.
Saturday
Mostly sunny, with a high near 54.
Saturday Night
Mostly clear, with a low around 29.
Sunday
Sunny, with a high near 54.
Sunday Night
Clear, with a low around 29.
M.L.King Day
Sunny, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Collinsville TX
 33.55°N 96.9°W (Elev. 696 ft)
Last Update:
11:21 am CST Jan 12, 2026
Forecast Valid:
4pm CST Jan 12, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation