| NWS Forecast for: Grayson County Issued by: National Weather Service Dallas/Fort Worth, TX Last Update: 130 PM CDT Mon Jul 27 2026 |  |
This Afternoon: Sunny, hot with highs around 100. South winds 5 to 10 mph. Heat index values up to 108. Tonight: Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Tuesday: Sunny, hot with highs around 101. Southwest winds 5 to 10 mph. Heat index values up to 109 in the afternoon. Tuesday Night: Mostly clear. Lows in the upper 70s. South winds around 5 mph. Wednesday: Sunny, hot with highs around 100. South winds around 5 mph. Heat index values up to 109 in the afternoon. Wednesday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Thursday: Mostly sunny. Hot with highs around 100. Heat index values up to 110 in the afternoon. Thursday Night: Partly cloudy. Lows in the upper 70s. Friday: Mostly sunny. Hot with highs around 100. Heat index values up to 110 in the afternoon. Friday Night: Mostly clear. Lows in the upper 70s. Saturday: Sunny, hot with highs in the upper 90s. Heat index values up to 105. Saturday Night: Mostly clear. Lows in the mid 70s. Sunday: Sunny. Highs in the mid 90s. | |
| Zone Forecast: Grayson County | |
Visit your local NWS office at: https://www.weather.gov/fwd |