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
As February gives way to March, the average high-temperature displays a slight ascent, adjusting from a chilly 44.6°F (7°C) to a cool 52.7°F (11.5°C). McLean's nights in March experience an average temperature drop to an icy 36.9°F (2.7°C).Humidity
In McLean, the average relative humidity in March is 72%.Rainfall
In McLean, in March, during 9.2 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, there are 109 rainfall days, and 9.29" (236mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In McLean, in March, snow falls for 2.3 days, with typically accumulated 0.51" (13mm) of snow. Throughout the year, there are 10.3 snowfall days, and 2.28" (58mm) 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 6:39 am and sunset at 6:01 pm EST. On the last day of March, sunrise is at 6:53 am and sunset at 7:31 pm EDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from EDT to EST.
Sunshine
The average sunshine in March is 6.8h.UV index
In McLean, the average daily maximum UV index in March is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In March, an average UV index of 3 transforms into the following instructions:
Be vigilant - Preventing sunburn is recommended. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in March?
What is the average humidity in March?
How many days does it rain in March?
How many days does it snow in March?
How many hours of daylight does McLean 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?
How high is the UV index in March?
Average temperature in March
McLean, VA
- Average high temperature in March: 52.7°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in March: 36.9°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in March
McLean, VA
- Average pressure in March: 30.08"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in March
McLean, VA
- Average wind speed in March: 7.7mph
The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in March
McLean, VA
- Average humidity in March: 72%
The months with the highest relative humidity are October and December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in March
McLean, VA
- Average rainfall in March: 0.63"
The wettest month (with the highest rainfall) is August (1.5").
The driest months (with the least rainfall) are January and September (0.51").
Average rainfall days in March
McLean, VA
- Average rainfall days in March: 9.2 days
The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is November (5.6 days).
Average snowfall in March
McLean, VA
- Average snowfall in March: 0.51"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in March
McLean, VA
- Average snowfall days in March: 2.3 days
The month with the highest number of snowfall days is February (3.6 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
McLean, VA
- 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in March
McLean, VA
- Average sunshine days in March: 18.3 days
The month with the most sunshine days is November (23 days).
The month with the least sunshine days is July (14.3 days).
Average UV index in March
McLean, VA
- Average UV index in March: 3
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, November and December (UV index 2).
Average cloud cover in March
McLean, VA
- Average cloud cover in March: 46
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in March
McLean, VA
- Average visibility in March: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
McLean, Virginia, USA
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