| NWS Forecast for: Grimes County Issued by: National Weather Service Houston, TX Last Update: 1138 AM CDT Fri Jun 12 2026 |  |
| This Afternoon: Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. South winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 108. Tonight: Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 70s. South winds 5 to 10 mph. Chance of rain 20 percent. Saturday: Mostly sunny. Humid with highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 105. Saturday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. South winds 5 to 10 mph with gusts up to 20 mph. Sunday: Mostly sunny. Showers likely with a chance of thunderstorms in the afternoon. Humid with highs in the lower 90s. South winds 5 to 10 mph. Chance of rain 70 percent. Heat index values up to 105. Sunday Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then showers likely after midnight. Lows in the mid 70s. Chance of rain 70 percent. Monday: Showers. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. Highs in the mid 80s. Chance of rain 90 percent. Monday Night: Showers with a chance of thunderstorms. Lows in the lower 70s. Chance of rain 90 percent. Tuesday: A chance of thunderstorms. Showers likely, mainly in the morning. Highs in the mid 80s. Chance of rain 70 percent. Tuesday Night: Partly cloudy. Lows in the mid 70s. Wednesday: Mostly sunny. Highs in the upper 80s. Heat index values up to 105 in the afternoon. Wednesday Night: Partly cloudy. Lows in the upper 70s. Thursday: Mostly sunny. Highs in the lower 90s. Heat index values up to 110 in the afternoon. | |
| Zone Forecast: Grimes County | |
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