| NWS Forecast for: Simpson County Issued by: National Weather Service Jackson, MS Last Update: 1221 PM CDT Tue Aug 11 2026 |  |
This Afternoon: Mostly sunny. Highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 106. Tonight: Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 105 early in the evening. Wednesday: Sunny. Highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 108. Wednesday Night: Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 105 early in the evening. Thursday: Sunny. Highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 109. Thursday Night Through Sunday: Mostly clear. Hot. Lows in the mid 70s. Highs around 100. Heat index values up to 105. Sunday Night: Partly cloudy in the evening, then clearing. Lows in the mid 70s. Monday: Sunny, hot with highs around 100. Heat index values up to 110. | |
| Zone Forecast: Simpson County | |
Visit your local NWS office at: https://www.weather.gov/jan |