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
March brings a rise in Williamson's average high-temperature, moving from an icy 40.6°F (4.8°C) in February to a fresh 52.3°F (11.3°C). In March, the temperature drops to an average of 36.9°F (2.7°C) at night.Humidity
In March, the average relative humidity is 76%.Rainfall
In Williamson, during March, the rain falls for 10.7 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, there are 121.4 rainfall days, and 14.72" (374mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. March is the last month it regularly snows. During 2.5 snowfall days, in March, Williamson aggregates 0.35" (9mm) of snow. Throughout the year, there are 19.8 snowfall days, and 2.91" (74mm) of snow is accumulated.Daylight
In Williamson, the average length of the day in March is 11h and 59min.On the first day of the month, sunrise is at 6:30 am and sunset at 5:52 pm CST. On the last day of March, sunrise is at 6:43 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
In March, the average sunshine is 6.4h.UV index
In Williamson, the average daily maximum UV index in March is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high UV index of 4 in March translates into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Williamson in March?
What is the average humidity in March?
How much does it rain in March?
What is the last month it snows?
What is the average length of the day in March?
What time are sunrise and sunset in March?
When does Daylight Saving Time (DST) start in March?
How many hours of sunshine does Williamson have in March?
What is the UV index intensity in March?
Average temperature in March
Williamson, IL
- Average high temperature in March: 52.3°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in March: 36.9°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in March
Williamson, 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
Williamson, IL
- Average wind speed in March: 9.6mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in March
Williamson, IL
- Average humidity in March: 76%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in March
Williamson, IL
- Average rainfall in March: 1.02"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in March
Williamson, IL
- Average rainfall days in March: 10.7 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in March
Williamson, IL
- Average snowfall in March: 0.35"
The month with the highest snowfall is December (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in March
Williamson, IL
- Average snowfall days in March: 2.5 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
Williamson, IL
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in March: 6h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in March
Williamson, IL
- Average sunshine days in March: 17 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is July (12.5 days).
Average UV index in March
Williamson, IL
- Average UV index in March: 4
The months with the highest UV index are 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
Williamson, IL
- Average cloud cover in March: 47
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility in March
Williamson, 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).
Williamson, Illinois, USA
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