Sunday
Patchy fog
High:
95°F
A 20 percent chance of showers and thunderstorms after 4pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 95. Heat index values as high as 108. Calm wind becoming west around 5 mph in the afternoon.
Marion, IL Weather - Tomorrow’s Forecast
Sunday Night
Slight chance of thunderstorms
Overnight low:
75°F
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 75. Calm wind.