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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in McLean, Virginia, is another cold winter month, with temperature in the range of an average high of 40.1°F (4.5°C) and an average low of 26.8°F (-2.9°C). January is the month when McLean experiences its coldest temperatures, averaging a high of 40.1°F (4.5°C) and a low of 26.8°F (-2.9°C). Weather in January »
Weather in February
February, the last month of the winter in McLean, is a frosty month, with an average temperature varying between 29.5°F (-1.4°C) and 44.6°F (7°C). During February, McLean records an average high-temperature of a chilly 44.6°F (7°C), marking a slight divergence from January's 40.1°F (4.5°C). Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in McLean, Virginia, with an average temperature ranging between min 36.9°F (2.7°C) and max 52.7°F (11.5°C). The coming of March brings a minor shift in McLean's weather, with average high-temperatures adjusting from February's frosty 44.6°F (7°C) to a fresh 52.7°F (11.5°C). Weather in March »
Weather in April
April in McLean, Virginia, is a comfortable spring month, with an average temperature ranging between min 46.6°F (8.1°C) and max 64.9°F (18.3°C). April indicates a change in the average high-temperature, moving up from a fresh 52.7°F (11.5°C) in March to an enjoyable 64.9°F (18.3°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in McLean, Virginia, with temperature in the range of an average high of 74.8°F (23.8°C) and an average low of 55.9°F (13.3°C). The arrival of May brings a change in McLean's weather, with average high-temperatures moving from April's refreshing 64.9°F (18.3°C) to a moderately hot 74.8°F (23.8°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in McLean, Virginia, with an average temperature varying between 82.8°F (28.2°C) and 63.9°F (17.7°C). As June begins, there's a slight increase in the average high-temperature, moving from a moderately hot 74.8°F (23.8°C) in May to a still warm 82.8°F (28.2°C). Weather in June »
Weather in July
July is a tropical summer month in McLean, Virginia, with an average temperature varying between 87.4°F (30.8°C) and 69.1°F (20.6°C). In McLean, the peak average temperatures are observed in July, with a high of 87.4°F (30.8°C) and a low of 69.1°F (20.6°C). Throughout July, the heat index is appraised at a fiery hot 98.6°F (37°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in McLean, Virginia, with temperature in the range of an average low of 67.6°F (19.8°C) and an average high of 85.6°F (29.8°C). An average high-temperature of a warm 85.6°F (29.8°C) marks August, exhibiting a close resemblance to the conditions in July. Weather in August »
Weather in September
September, the first month of the autumn in McLean, is also a moderately hot month, with an average temperature fluctuating between 61.2°F (16.2°C) and 78.6°F (25.9°C). September sees a slight reduction in average high-temperature, with a shift from a moderately hot 85.6°F (29.8°C) in August to a still warm 78.6°F (25.9°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in McLean, Virginia, with an average temperature fluctuating between 50.7°F (10.4°C) and 66.4°F (19.1°C). McLean's October weather features a mild decline in high-temperatures, reducing from a moderately hot 78.6°F (25.9°C) in September to a refreshing 66.4°F (19.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in McLean, Virginia, with an average temperature fluctuating between 54.1°F (12.3°C) and 39°F (3.9°C). As November commences, the average high-temperature shows a reduction, transitioning from a refreshing 66.4°F (19.1°C) in October to a fresh 54.1°F (12.3°C). Weather in November »
Weather in December
The first month of the winter, December, is still a chilly month in McLean, Virginia, with an average temperature ranging between max 45.5°F (7.5°C) and min 33.1°F (0.6°C). December's arrival aligns with a minor decrease in average high-temperatures, from November's fresh 54.1°F (12.3°C) to a chilly 45.5°F (7.5°C). Weather in December »
[Resources]Frequently asked questions
What month is the coldest in McLean?
January is McLean's coldest month, registering average high temperatures of 40.1°F (4.5°C) and lows of 26.8°F (-2.9°C).
What is the driest month in McLean?
The months with the least rainfall are January and September Rain falls for 6 days and accumulates 0.51" (13mm) of rain.
How much does it rain in McLean?
Throughout the year, in McLean, Virginia, there are 109 rainfall days, and 9.29" (236mm) of precipitation is accumulated.
When does it snow in McLean?
January through April, November and December are months with snowfall in McLean, Virginia.
When does it snow the most in McLean?
The month with the most snowfall is January, when snow falls for 2.7 days and typically aggregates up to 0.98" (25mm) of snow.
How much does it snow in McLean?
Throughout the year, in McLean, there are 10.3 snowfall days, and 2.28" (58mm) of snow is accumulated.
What is the month with the lowest UV index in McLean?
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index in McLean.
What are the months with the least sunshine in McLean?
February and December, with an average of 5.1h of sunshine, are months with the least sunshine in McLean.
When is Daylight Saving Time (DST) in McLean?
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 ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
When it does not snow in McLean?
May through October are months without snowfall.
What is the month with the highest UV index in McLean?
The months with the highest UV index in McLean, Virginia, are May through August, with an average maximum UV index of 6.
When are the longest days in McLean?
June has the longest days of the year in McLean, with an average of 14h and 54min of daylight.
What time of the year is the hottest in McLean?
With its average high temperature of 87.4°F (30.8°C) and a low of 69.1°F (20.6°C), July is regarded as the warmest month.
What is the least humid month in McLean?
With an average relative humidity of 70%, July is the least humid month in McLean.
What month has the most sunshine in McLean?
With an average of 10.9h of sunshine, July has the most sunshine of the year in McLean.
What is the wettest month in McLean?
August is the month with the most rainfall. Rain falls for 13 days and accumulates 1.5" (38mm) of precipitation.
What are the most humid months in McLean?
The months with the highest humidity in McLean are October and December, with an average relative humidity of 76%.
What is the month with the shortest days in McLean?
The month with the shortest days is December, with an average of 9h and 30min of daylight.
Average temperature
McLean, VA
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).
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
McLean, VA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.11"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
McLean, VA
- Average wind speed in January:
7.4mph - Average wind speed in February:
7.5mph - Average wind speed in March:
7.7mph - Average wind speed in April:
7.6mph - Average wind speed in May:
6.3mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.9mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.5mph - Average wind speed in November:
6.8mph - Average wind speed in December:
6.8mph
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
McLean, VA
The months with the highest relative humidity are October and December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall
McLean, VA
- Average rainfall in January:
0.51" - Average rainfall in February:
0.55" - Average rainfall in March:
0.63" - Average rainfall in April:
0.75" - Average rainfall in May:
0.75" - Average rainfall in June:
0.94"
- Average rainfall in July:
1.18" - Average rainfall in August:
1.5" - Average rainfall in September:
0.51" - Average rainfall in October:
0.67" - Average rainfall in November:
0.63" - Average rainfall in December:
0.67"
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
McLean, VA
- Average rainfall days in January:
6 days - Average rainfall days in February:
6.3 days - Average rainfall days in March:
9.2 days - Average rainfall days in April:
10.8 days - Average rainfall days in May:
10.8 days - Average rainfall days in June:
11.3 days
- Average rainfall days in July:
13.5 days - Average rainfall days in August:
13 days - Average rainfall days in September:
8.1 days - Average rainfall days in October:
7.5 days - Average rainfall days in November:
5.6 days - Average rainfall days in December:
6.9 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
McLean, VA
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
McLean, VA
- Average snowfall days in January:
2.7 days - Average snowfall days in February:
3.6 days - Average snowfall days in March:
2.3 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.3 days - Average snowfall days in December:
1.2 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 / Average sunshine
McLean, VA
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 3min
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 January:
5h and 1min - Average sunshine in February:
5h and 1min - Average sunshine in March:
6h and 5min - Average sunshine in April:
9h and 0min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 1min
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
McLean, VA
- Average sunshine days in January:
22.1 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
18.3 days - Average sunshine days in April:
16.8 days - Average sunshine days in May:
16.6 days - Average sunshine days in June:
15.9 days
- Average sunshine days in July:
14.3 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
19.1 days - Average sunshine days in October:
21.4 days - Average sunshine days in November:
23 days - Average sunshine days in December:
22 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
McLean, VA
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
McLean, VA
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
McLean, VA
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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