March weather forecastGranite City, IL
March
Weather in March
The first month of the spring, March, is a cool month in Granite City, Illinois, with an average temperature fluctuating between 54.1°F (12.3°C) and 37.9°F (3.3°C).Temperature
March's arrival is marked by an increase in the average high-temperature, moving from an icy 42.3°F (5.7°C) in February to a cool 54.1°F (12.3°C). In the month of March, Granite City witnesses a consistent average low-temperature of 37.9°F (3.3°C).Humidity
The average relative humidity in March is 75%.Rainfall
In Granite City, in March, it is raining for 14.4 days, with typically 2.68" (68mm) of accumulated precipitation. In Granite City, during the entire year, the rain falls for 159.5 days and collects up to 36.06" (916mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Granite City. March is the last month it regularly snows. During 2.3 snowfall days, in March, Granite City aggregates 1.1" (28mm) of snow. In Granite City, during the entire year, snow falls for 20.3 days and aggregates up to 8.07" (205mm) of snow.Daylight
The average length of the day in March is 11h and 59min.On the first day of the month, sunrise is at 6:31 am and sunset at 5:53 pm CST. On the last day of March, sunrise is at 6:45 am and sunset at 7:23 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
In March, the average sunshine is 6.5h.UV index
The average daily maximum UV index in March is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 4 in March interprets into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Granite City, IL
- Average high temperature in March: 54.1°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (37.2°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 (24.3°F).
Average pressure in March
Granite City, 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
Granite City, 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 (5.5mph).
Average humidity in March
Granite City, IL
- Average humidity in March: 75%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in March
Granite City, IL
- Average rainfall in March: 2.68"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is February (1.93").
Average rainfall days in March
Granite City, IL
- Average rainfall days in March: 14.4 days
The months with the highest number of rainy days are May and July (17.8 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in March
Granite City, IL
- Average snowfall in March: 1.1"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in March
Granite City, IL
- Average snowfall days in March: 2.3 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in March /
Average sunshine in March
Granite City, 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 30min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in March
Granite City, IL
- Average sunshine days in March: 13.8 days
The month with the most sunshine days is December (18 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in March
Granite City, 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, November and December (UV index 2).
Average cloud cover in March
Granite City, IL
- Average cloud cover in March: 46
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in March
Granite City, 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).





