| NWS Forecast for: Grimes County Issued by: National Weather Service Houston, TX Last Update: 618 PM CDT Thu Sep 10 2026 | |
| Tonight: Partly cloudy. A chance of showers with a slight chance of thunderstorms this evening. Lows in the mid 70s. South winds 5 to 10 mph. Chance of rain 30 percent. Friday: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. South winds 5 to 10 mph. Chance of rain 20 percent. Friday Night: Partly cloudy. Lows in the mid 70s. South winds 5 to 10 mph. Saturday: Mostly sunny. Hot with highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 109. Saturday Night: Partly cloudy in the evening, then becoming mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph. Sunday: Mostly sunny. A chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 30 percent. Heat index values up to 110. Sunday Night: Partly cloudy in the evening, then clearing. Lows in the mid 70s. Monday: Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 110. Monday Night: Partly cloudy in the evening, then clearing. Lows in the mid 70s. Tuesday: Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 110. Tuesday Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. Wednesday: Mostly sunny. Highs in the mid 90s. Heat index values up to 105. Wednesday Night: Partly cloudy in the evening, then clearing. Lows in the mid 70s. Thursday: Mostly sunny. Highs in the mid 90s. Heat index values up to 105. | |
| Zone Forecast: Grimes County | |
Visit your local NWS office at: https://www.weather.gov/hgx |