O'Fallon Weather in March
March in O'Fallon averages 14°C (57°F) during the day and 2°C (36°F) at night. Quite a bit of rainfall is typical this month, with around 95 mm (3.7 in) on average. An umbrella is a good idea.
Rainfall in O'Fallon in March
Historically, the month has about 11 days of rain, averaging 95 mm (3.7 in) in total. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in O'Fallon in March
Temperatures in O'Fallon in March top out at 14°C (57°F) and drop to 2°C (36°F) overnight. Conditions are often most pleasant around the middle of the day. With overnight lows of 2°C (36°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in O'Fallon in March
With approximately 199 hours of sunshine, the days are filled with clear skies. Despite it being a cool month, it makes for pleasant days outside.If you prefer enjoying temperate temperatures and rain-free days, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our O'Fallon's climate page.
O'Fallon Temperature in March
Min Temperature
2°C (36°F)
Max Temperature
14°C (57°F)
Chance of Rain
37%
Precipitation
95 mm (3.7 in)
Rainy days
11 days
Humidity
68% *
Sunshine
199 hours *
Percentage Sunshine
53% *
Best Places in the United States of America in March
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in March →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in O'Fallon in March
Pack for changing conditions in O'Fallon in March. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in O'Fallon in March
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our O'Fallon's climate page.
Temperature Rainfall Sunshine Humidity
See the full O'Fallon climate overview or explore weather in the United States of America.
