Contents
- Weather in March
- Frequently asked questions
- Average temperature in March
- Average pressure in March
- Average wind speed in March
- Average humidity in March
- Average rainfall in March
- Average rainfall days in March
- Average snowfall in March
- Average snowfall days in March
- Average daylight in March
- Average sunshine in March
- Average sunshine days in March
- Average UV index in March
- Average cloud cover in March
- Average visibility in March
Weather in March
Temperature
In O'Fallon, the average high-temperature in March rises, from a cold 41.9°F (5.5°C) in February, to a fresh 54.1°F (12.3°C). Throughout March, the average low-temperature dips to an icy 37.9°F (3.3°C).Humidity
In O'Fallon, the average relative humidity in March is 75%.Rainfall
In March, the rain falls for 11.8 days. Throughout March, 1.5" (38mm) of precipitation is accumulated. In O'Fallon, during the entire year, the rain falls for 132.3 days and collects up to 21.06" (535mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. March is the last month it regularly snows. During 1.9 snowfall days, in March, O'Fallon aggregates 0.59" (15mm) of snow. Throughout the year, there are 19 snowfall days, and 4.13" (105mm) of snow is accumulated.Daylight
The average length of the day in March is 11h and 59min.On the first day of the month, sunrise is at 6:33 am and sunset at 5:56 pm CST. On the last day of March, sunrise is at 6:47 am and sunset at 7:25 pm CDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from CDT to CST.
Sunshine
The average sunshine in March is 6.6h.UV index
In O'Fallon, Missouri, the average daily maximum UV index in March is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 4 in March translates into this advice:
Take precautions - Protection against sun damage is advised. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Enhance your sun protection with tightly woven, yet airy clothing. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are March temperatures?
What is the average humidity in March?
How much does it rain in March?
What is the last month it snows?
How many hours of daylight does O'Fallon have in March?
When is the sunrise / sunset in March?
When does Daylight Saving Time (DST) start in March?
How long on average sun shines in March?
What is the UV index intensity in March?
Average temperature in March
O'Fallon, MO
- Average high temperature in March: 54.1°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in March: 37.9°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in March
O'Fallon, MO
- Average pressure in March: 30.07"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in March
O'Fallon, MO
- Average wind speed in March: 8.8mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in March
O'Fallon, MO
- Average humidity in March: 75%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in March
O'Fallon, MO
- Average rainfall in March: 1.5"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in March
O'Fallon, MO
- Average rainfall days in March: 11.8 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in March
O'Fallon, MO
- Average snowfall in March: 0.59"
The month with the highest snowfall is February (1.61").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in March
O'Fallon, MO
- Average snowfall days in March: 1.9 days
The months with the highest number of snowfall days are January and February (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in March /
Average sunshine in March
O'Fallon, MO
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in March: 6h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 42min).
Average sunshine days in March
O'Fallon, MO
- Average sunshine days in March: 16.1 days
The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is July (12.6 days).
Average UV index in March
O'Fallon, MO
- Average UV index in March: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in March
O'Fallon, MO
- Average cloud cover in March: 47
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are June, July, August and September (Cloud cover 28).
Average visibility in March
O'Fallon, MO
- Average visibility in March: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
O'Fallon, Missouri, USA
Weather forecast for your location
2. Allow the app to use your location