| NWS Forecast for: San Jacinto County Issued by: National Weather Service Houston, TX Last Update: 124 PM CDT Sat Jun 20 2026 | |
| This Afternoon: Partly sunny with a chance of showers and thunderstorms. Near steady temperature in the mid 80s. Southeast winds around 5 mph. Chance of rain 50 percent. Tonight: Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. A slight chance of showers. Humid with lows in the mid 70s. Southeast winds around 5 mph. Chance of rain 20 percent. Sunday: Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Humid with highs in the lower 90s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 30 percent. Heat index values up to 107. Sunday Night: Mostly clear in the evening, then becoming mostly cloudy. Humid with lows in the upper 70s. South winds 5 to 10 mph with gusts up to 20 mph. Monday: Partly sunny in the morning, then clearing. Humid with highs in the mid 90s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 108. Monday Night: Clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Heat index values up to 105 early in the evening. Tuesday: Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 110. Tuesday Night: Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. Wednesday: Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 105. Wednesday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Thursday: Mostly sunny. Highs in the mid 90s. Thursday Night: Mostly clear. Lows in the mid 70s. Friday: Mostly sunny. Highs in the mid 90s. Heat index values up to 105 in the afternoon. | |
| Zone Forecast: San Jacinto County | |
Visit your local NWS office at: https://www.weather.gov/hgx |