| NWS Forecast for: Macoupin County Issued by: National Weather Service Saint Louis, MO Last Update: 127 AM CDT Wed Jul 22 2026 | |
| Rest Of Tonight: Mostly clear and cooler. Near steady temperature in the mid 60s. North winds around 5 mph. Wednesday: Sunny in the morning, then becoming partly sunny. Highs around 80. North winds 5 to 10 mph. Wednesday Night: Partly cloudy in the evening, then clearing. Lows in the upper 50s. Northeast winds 5 to 10 mph. Thursday: Sunny. Highs around 80. East winds around 5 mph. Thursday Night: Partly cloudy in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows around 60. East winds around 5 mph. Chance of rain 20 percent. Friday: Partly sunny in the morning, then becoming mostly cloudy. A 50 percent chance of showers. Highs in the upper 70s. Friday Night: Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the lower 60s. Chance of rain 50 percent. Saturday: Mostly sunny. Warmer with highs in the upper 80s. Saturday Night And Sunday: Mostly clear. Lows around 70. Highs in the mid 90s. Heat index values up to 105. Sunday Night: Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. Monday And Monday Night: Mostly clear. Highs in the mid 90s. Lows in the lower 70s. Heat index values up to 105. Tuesday: Mostly sunny. Highs in the lower 90s. | |
| Zone Forecast: Macoupin County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |