| NWS Forecast for: Macoupin County Issued by: National Weather Service Saint Louis, MO Last Update: 1038 PM CDT Thu Mar 12 2026 | |
Overnight: Partly cloudy late this evening, then becoming mostly cloudy. Breezy and not as cool. Near steady temperature in the mid 40s. South winds 15 to 25 mph with gusts up to 40 mph. Friday: Partly sunny and breezy. Highs in the mid 50s. West winds 15 to 25 mph with gusts up to 35 mph. Friday Night: Partly cloudy in the evening, then clearing. Lows in the mid 30s. Northwest winds 5 to 10 mph, becoming northeast after midnight. Saturday: Partly sunny. Highs in the lower 60s. Southeast winds 10 to 15 mph. Saturday Night: Mostly cloudy. A slight chance of rain after midnight. Not as cool with lows in the lower 50s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. Sunday: Rain likely with a slight chance of thunderstorms in the morning, then rain with a chance of thunderstorms in the afternoon. Breezy with highs in the mid 60s. Chance of rain near 100 percent. Sunday Night: Rain, snow with a slight chance of thunderstorms in the evening, then a chance of snow after midnight. Light snow accumulation. Windy and much cooler with lows around 20. Chance of precipitation near 100 percent. Wind chill values as low as zero after midnight. Monday: Mostly cloudy with a slight chance of snow in the morning, then partly sunny in the afternoon. Windy and much cooler with highs in the mid 20s. Chance of snow 20 percent. Wind chill values as low as zero. Monday Night: Mostly clear. Lows around 10 above. Wind chill values as low as 5 below. Tuesday: Mostly sunny. Highs in the lower 30s. Wind chill values as low as 5 below in the morning. Tuesday Night: Mostly cloudy. A slight chance of snow in the evening, then a chance of rain and snow after midnight. Not as cool with lows in the lower 20s. Chance of precipitation 40 percent. Wednesday: Partly sunny. A slight chance of rain in the morning. Not as cool with highs in the lower 50s. Chance of rain 20 percent. Wednesday Night: Partly cloudy in the evening, then becoming mostly cloudy. Not as cool with lows in the mid 30s. Thursday: Sunny. Not as cool with highs in the mid 60s. | |
| Zone Forecast: Macoupin County | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |