Typical Weather in Mount Vernon, IL in March
54° F Avg High
34° F Avg Low
7 Rainy Days
☀️ Temperature Summary
Highs in March are typically around 54°F, which is cooler than usual in Mount Vernon. Lows overnight are typically around 34°F. Temperatures will generally increase as the month goes on, with daily high temperatures ranging between 48°F and 59°F.
March is a great time to visit Mount Vernon, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
You can expect about a 23% chance of rain for any given day in March. It's one of the rainier months of the year for Mount Vernon, with total rainfall for the month around 4 inches.
Rainfall Throughout the Year
Planning a trip to Mount Vernon? Try our free trip weather planner