Climate and monthly weather forecastVienna, VA
Climate and monthly weather forecast
Weather in January
January, like December, in Vienna, Virginia, is an icy winter month, with an average temperature fluctuating between 40.5°F (4.7°C) and 26.4°F (-3.1°C). Vienna experiences its lowest temperatures in January, with an average peak of 40.5°F (4.7°C) and a low of 26.4°F (-3.1°C). Weather in January »Weather in February
February, the last month of the winter in Vienna, is a chilly month, with an average temperature ranging between max 44.4°F (6.9°C) and min 29.1°F (-1.6°C). February experiences an average high-temperature of a chilly 44.4°F (6.9°C), barely different from January's 40.5°F (4.7°C). Weather in February »Weather in March
March, the first month of the spring in Vienna, is a cool month, with an average temperature ranging between max 52.7°F (11.5°C) and min 36.9°F (2.7°C). As March arrives, a slight rise in the average high-temperature is observed, moving from a chilly 44.4°F (6.9°C) in February to a fresh 52.7°F (11.5°C). Weather in March »Weather in April
April is a refreshing spring month in Vienna, Virginia, with an average temperature varying between 65.1°F (18.4°C) and 46.2°F (7.9°C). A shift in the average high-temperature is noticeable in April, changing from a cool 52.7°F (11.5°C) in March to a comfortable 65.1°F (18.4°C). Weather in April »Weather in May
May, the last month of the spring in Vienna, is a moderately hot month, with an average temperature fluctuating between 55.9°F (13.3°C) and 74.8°F (23.8°C). The arrival of May brings a temperature shift, with the average high-temperature escalating from a refreshing 65.1°F (18.4°C) in April to a moderately hot 74.8°F (23.8°C). Weather in May »Weather in June
June, the first month of the summer in Vienna, is also a moderately hot month, with temperature in the range of an average low of 63.5°F (17.5°C) and an average high of 82.9°F (28.3°C). In Vienna, the average high-temperature in June slightly rises, from a moderately hot 74.8°F (23.8°C) in May, to a still warm 82.9°F (28.3°C). Weather in June »Weather in July
July is a hot summer month in Vienna, Virginia, with an average temperature ranging between max 88°F (31.1°C) and min 68.4°F (20.2°C). In Vienna, the peak temperatures are generally noted in July, averaging a high of 88°F (31.1°C) and a low of 68.4°F (20.2°C). The heat index in July is calculated to be a very hot 100.4°F (38°C). Weather in July »Weather in August
August, the last month of the summer in Vienna, is another warm month, with an average temperature varying between 66.9°F (19.4°C) and 85.8°F (29.9°C). As Vienna steps into August, the average high-temperature is measured at a moderately hot 85.8°F (29.9°C), displaying minor differences from July's 88°F (31.1°C). Weather in August »Weather in September
September, the first month of the autumn in Vienna, is still a warm month, with temperature in the range of an average low of 60.6°F (15.9°C) and an average high of 78.4°F (25.8°C). Vienna in September experiences a gentle temperature dip, with average high-temperatures reducing from a moderately hot 85.8°F (29.9°C) in August to a still warm 78.4°F (25.8°C). Weather in September »Weather in October
October, like September, in Vienna, Virginia, is another refreshing autumn month, with temperature in the range of an average low of 49.8°F (9.9°C) and an average high of 66.6°F (19.2°C). Vienna observes a minor decrease in the average high-temperature with the arrival of October, falling from September's warm 78.4°F (25.8°C) to a comfortable 66.6°F (19.2°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Vienna, Virginia, with an average temperature ranging between min 38.5°F (3.6°C) and max 54.5°F (12.5°C). The start of November signals a decrease in the average high-temperature, transitioning from a refreshing 66.6°F (19.2°C) in October to a cool 54.5°F (12.5°C). Weather in November »Weather in December
December, the first month of the winter in Vienna, is also a frosty month, with an average temperature varying between 45.5°F (7.5°C) and 32.9°F (0.5°C). The shift from November to December involves a decrease in the average high-temperature, from a fresh 54.5°F (12.5°C) to a frosty 45.5°F (7.5°C). Weather in December »Updated: Aug 5, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, with its high-temperature average of 40.5°F (4.7°C) and a low-temperature average of 26.4°F (-3.1°C), is the coldest month.
In Vienna, during the entire year, the rain falls for 162 days and collects up to 31.65" (804mm) of precipitation.
January through April, November and December are months with snowfall.
January is the month with the most snowfall. Snow falls for 5.6 days and accumulates 3.54" (90mm) of snow.
Throughout the year, there are 18 snowfall days, and 11.18" (284mm) of snow is accumulated.
The months with the least sunshine are January, February and December, with an average of 5.2h of sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
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.
May through October are months without snowfall.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
The month with the longest days in Vienna is June, with an average of 14h and 54min of daylight.
With an average high-temperature of 88°F (31.1°C) and an average low-temperature of 68.4°F (20.2°C), July is the warmest month.
The least humid month is July, with an average relative humidity of 71%.
The month with the most sunshine is July, with an average of 10.8h of sunshine.
August is the month with the most rainfall. Rain falls for 17.3 days and accumulates 3.78" (96mm) of precipitation.
September is the month with the least rainfall. Rain falls for 13.1 days and accumulates 2.01" (51mm) of precipitation.
The months with the highest humidity are October and December, with an average relative humidity of 77%.
With an average of 9h and 30min of daylight, December has the shortest days of the year.
Average temperature
Vienna, VA
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.5°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 (26.4°F).
Average pressure
Vienna, VA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"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
Vienna, VA
- Average wind speed in January:
7.1mph - Average wind speed in February:
7.1mph - Average wind speed in March:
7.4mph - Average wind speed in April:
7.3mph - Average wind speed in May:
6.1mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.7mph - Average wind speed in September:
5.3mph - Average wind speed in October:
6.2mph - Average wind speed in November:
6.5mph - Average wind speed in December:
6.5mph
The windiest month (with the highest average wind speed) is March (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity
Vienna, VA
The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is July (71%).
Average rainfall
Vienna, VA
- Average rainfall in January:
2.09" - Average rainfall in February:
2.09" - Average rainfall in March:
2.44" - Average rainfall in April:
2.8" - Average rainfall in May:
3.11" - Average rainfall in June:
2.68"
- Average rainfall in July:
3.03" - Average rainfall in August:
3.78" - Average rainfall in September:
2.01" - Average rainfall in October:
2.56" - Average rainfall in November:
2.36" - Average rainfall in December:
2.72"
The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days
Vienna, VA
- Average rainfall days in January:
10.4 days - Average rainfall days in February:
10.7 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
15.6 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
14.6 days
- Average rainfall days in July:
17 days - Average rainfall days in August:
17.3 days - Average rainfall days in September:
13.1 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
10.9 days
The months with the highest number of rainy days are May and August (17.3 days).
The month with the least rainy days is November (9.1 days).
Average snowfall
Vienna, VA
The month with the highest snowfall is January (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Vienna, VA
- Average snowfall days in January:
5.6 days - Average snowfall days in February:
5.3 days - Average snowfall days in March:
3.3 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:
0.5 days - Average snowfall days in December:
3.1 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Vienna, VA
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
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 12min - Average sunshine in February:
5h and 12min - Average sunshine in March:
6h and 54min - Average sunshine in April:
9h and 0min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
10h and 12min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 48min - Average sunshine in December:
5h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).
Average sunshine days
Vienna, VA
- Average sunshine days in January:
17.4 days - Average sunshine days in February:
14.2 days - Average sunshine days in March:
14.5 days - Average sunshine days in April:
12.6 days - Average sunshine days in May:
11.9 days - Average sunshine days in June:
13.2 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
11.6 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
17.1 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
16.9 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.3 days).
Average UV index
Vienna, 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, February, November and December (UV index 2).
Average cloud cover
Vienna, 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
Vienna, 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).
