On April 1, 2026, Carthage, Illinois, will experience a day marked by rain and overcast skies, culminating in thundershowers late at night. Initial rain is predicted to subside early, but the sky will remain cloudy. The high temperature is expected to reach 48°F (9°C), accompanied by east-northeast winds ranging from 10 to 20 mph. The likelihood of precipitation is consistently high at 90% throughout the day and night. Current conditions show a temperature of 51°F (11°C), with humidity at 87% and cloud cover at 98%, increasing the chance of thundershowers due to atmospheric instability.