Threats For Heavy Rain and Severe Thunderstorms Continue in the Plains; Fire Weather Conditions Worsen in the Southwest
On Monday and Tuesday, the focus for heavy rain and severe thunderstorms will continue in the Plains and central Mississippi River Valley. Meanwhile, hot conditions and Critical Fire Weather looms over the Great Basin and Southwest U.S. through midweek. Read More >
Current conditions at
Sherman/Denison, Grayson County Airport (KGYI)
Lat: 33.72°NLon: 96.67°WElev: 748ft.
Fair
79°F
26°C
| Humidity | 70% |
| Wind Speed | E 3 mph |
| Barometer | 29.98 in |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Heat Index | 81°F (27°C) |
| Last update | 15 Jun 6:50 pm CDT |
Extended Forecast for
Collinsville TX
Tonight
Low: 71 °F
Mostly Cloudy
Monday
High: 91 °F
Decreasing
CloudsMonday Night
Low: 75 °F
Mostly Clear
Tuesday
High: 93 °F
Sunny
Tuesday Night
Low: 75 °F
Mostly Clear
Wednesday
High: 93 °F
Mostly Sunny
Wednesday Night
Low: 74 °F
Chance
ShowersJuneteenth
High: 93 °F
Mostly Sunny
Thursday Night
Low: 74 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly cloudy, with a low around 71. North northeast wind around 5 mph becoming calm in the evening.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 91. Heat index values as high as 103. South southeast wind around 5 mph becoming west in the afternoon.
Monday Night
Mostly clear, with a low around 75. South wind around 5 mph.
Tuesday
Sunny, with a high near 93. Heat index values as high as 103. South wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 75. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 93. South wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 74. South wind 5 to 10 mph.
Juneteenth
Mostly sunny, with a high near 93. South southwest wind around 5 mph.
Thursday Night
Mostly clear, with a low around 74. South southeast wind around 5 mph.
Friday
Sunny, with a high near 94.
Friday Night
Mostly clear, with a low around 75.
Saturday
Sunny, with a high near 93.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny, with a high near 92.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Collinsville TX
33.57°N 96.9°W (Elev. 722 ft)
33.57°N 96.9°W (Elev. 722 ft)
5:43 pm CDT Jun 15, 2025
8pm CDT Jun 15, 2025-6pm CDT Jun 22, 2025
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