Weather in O'Fallon in March
O'Fallon, United States averages a high of 13°C (55.4°F) and low of 2.7°C (36.9°F) in March, with 10 rain days and 8.1 hours of daily sunshine. Travel score: 63.3/100 (Good). The best time to visit O'Fallon is September.
High
13°C55°F
Low
3°C37°F
🌧️
10
rain days
☀️
8.1
hrs/day sunshine
💧
67%
humidity
63— Good
March in O'Fallon is cool and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in O'Fallon?
How much does it rain in O'Fallon in March?
O'Fallon receives an average of 97.6mm of rainfall across 10 rainy days in March. The annual total is 1035.9mm.
What should I pack for O'Fallon in March?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Warm coat
Cool weather with highs around 13°C
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Sweaters and warm layers
Layer up for comfort
🧤
Warm gloves
Cold nights around 3°C
🧣
Warm scarf
Protect against cold winds
🎉Visiting United States in March?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31