March weather forecastFairview Heights, IL
March
Weather in March
The first month of the spring, March, is a cool month in Fairview Heights, Illinois, with an average temperature fluctuating between 54.5°F (12.5°C) and 37.9°F (3.3°C).Temperature
An escalation in the average high-temperature is seen with the onset of March, moving from an icy 42.4°F (5.8°C) in February to a cool 54.5°F (12.5°C). The nighttime temperature, during March, averages of 37.9°F (3.3°C).Humidity
In March, the average relative humidity is 76%.Rainfall
In March, the rain falls for 14.3 days. Throughout March, 2.72" (69mm) of precipitation is accumulated. In Fairview Heights, during the entire year, the rain falls for 147.1 days and collects up to 35.43" (900mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. March is the last month it regularly snows. During 2.1 snowfall days, in March, Fairview Heights aggregates 0.98" (25mm) of snow. Throughout the year, there are 21.1 snowfall days, and 8.11" (206mm) of snow is accumulated.Daylight
In March, the average length of the day is 11h and 59min.On the first day of the month, sunrise is at 6:30 am and sunset at 5:53 pm CST. On the last day of March, sunrise is at 6:44 am and sunset at 7:22 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 6.2h.UV index
In March, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In March, a daily UV index of 4 turns into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Fairview Heights, IL
- Average high temperature in March: 54.5°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in March: 37.9°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in March
Fairview Heights, IL
- 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
Fairview Heights, IL
- Average wind speed in March: 9.1mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in March
Fairview Heights, IL
- Average humidity in March: 76%
The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in March
Fairview Heights, IL
- Average rainfall in March: 2.72"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.93").
Average rainfall days in March
Fairview Heights, IL
- Average rainfall days in March: 14.3 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in March
Fairview Heights, IL
- Average snowfall in March: 0.98"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in March
Fairview Heights, IL
- Average snowfall days in March: 2.1 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in March /
Average sunshine in March
Fairview Heights, IL
- 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 12min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in March
Fairview Heights, IL
- Average sunshine days in March: 13.7 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in March
Fairview Heights, IL
- 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 and December (UV index 2).
Average cloud cover in March
Fairview Heights, IL
- Average cloud cover in March: 48
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in March
Fairview Heights, IL
- 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).





