| NWS Forecast for: Grayson County Issued by: National Weather Service Dallas/Fort Worth, TX Last Update: 1106 AM CDT Wed Jul 29 2026 | |
This Afternoon: Mostly sunny. Hot with highs around 100. South winds around 5 mph. Heat index values up to 105. Tonight: Partly cloudy in the evening, then clearing. Lows in the upper 70s. South winds around 5 mph. Thursday: Sunny, hot with highs around 100. South winds 5 to 10 mph. Heat index values up to 106. Thursday Night: Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Friday: Mostly sunny. Hot with highs around 102. Southwest winds 5 to 10 mph. Heat index values up to 110 in the afternoon. Friday Night: Partly cloudy. Lows in the upper 70s. Saturday: Sunny. Highs in the mid 90s. Saturday Night: Mostly clear. Lows in the lower 70s. Sunday: Sunny. Highs in the mid 90s. Sunday Night: Clear. Lows in the lower 70s. Monday: Sunny. Highs in the mid 90s. Monday Night: Clear. Lows in the mid 70s. Tuesday: Sunny. Highs in the upper 90s. | |
| Zone Forecast: Grayson County | |
Visit your local NWS office at: https://www.weather.gov/fwd |