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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, is a frosty winter month in Dumbarton, Virginia, with an average temperature ranging between max 44.2°F (6.8°C) and min 29.5°F (-1.4°C). January is the coldest month, exhibiting average temperatures of 44.2°F (6.8°C) at the peak and 29.5°F (-1.4°C) at the base. Weather in January »
Weather in February
The last month of the winter, February, is also a frosty month in Dumbarton, Virginia, with temperature in the range of an average low of 31.8°F (-0.1°C) and an average high of 49.1°F (9.5°C). Dumbarton's average high-temperature in February is a still frosty 49.1°F (9.5°C), marking an insignificant difference from the 44.2°F (6.8°C) of January. Weather in February »
Weather in March
March, the first month of the spring in Dumbarton, is a refreshing month, with an average temperature ranging between max 55.9°F (13.3°C) and min 38.8°F (3.8°C). The shift into March is characterized by a subtle rise in the average high-temperature, transitioning from February's chilly 49.1°F (9.5°C) to a refreshing 55.9°F (13.3°C). Weather in March »
Weather in April
April in Dumbarton, Virginia, is an agreeable spring month, with temperature in the range of an average low of 49.1°F (9.5°C) and an average high of 68.2°F (20.1°C). Dumbarton, Virginia, in April experiences an increase in the average high-temperature, moving from March's mild 55.9°F (13.3°C) to an agreeable 68.2°F (20.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Dumbarton, Virginia, with an average temperature fluctuating between 58.1°F (14.5°C) and 78.1°F (25.6°C). A shift in the average high-temperature is noticeable in May, changing from an agreeable 68.2°F (20.1°C) in April to a warm 78.1°F (25.6°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Dumbarton, Virginia, with an average temperature fluctuating between 65.3°F (18.5°C) and 85.6°F (29.8°C). June brings a slight rise in Dumbarton's average high-temperature, moving from 78.1°F (25.6°C) in May to a still warm 85.6°F (29.8°C). Weather in June »
Weather in July
July is a tropical summer month in Dumbarton, Virginia, with temperature in the range of an average low of 69.6°F (20.9°C) and an average high of 90.7°F (32.6°C). In Dumbarton, July is identified by the highest average temperatures, reaching a peak of 90.7°F (32.6°C) and a low of 69.6°F (20.9°C). The heat index in July is evaluated at an extremely hot 105.8°F (41°C). Weather in July »
Weather in August
The last month of the summer, August, is also a hot month in Dumbarton, Virginia, with an average temperature ranging between max 88.3°F (31.3°C) and min 68.2°F (20.1°C). August brings an average high-temperature of a still tropical 88.3°F (31.3°C), nearly identical to the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Dumbarton, Virginia, with temperature in the range of an average high of 81.3°F (27.4°C) and an average low of 62.6°F (17°C). September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a tropical 88.3°F (31.3°C) in August to a moderately hot 81.3°F (27.4°C). Weather in September »
Weather in October
October, like September, is an agreeable autumn month in Dumbarton, Virginia, with an average temperature fluctuating between 51.8°F (11°C) and 69.3°F (20.7°C). Dumbarton's October weather shows a moderate shift in high-temperatures, falling from September's moderately hot 81.3°F (27.4°C) to a pleasant 69.3°F (20.7°C). Weather in October »
Weather in November
The last month of the autumn, November, is another refreshing month in Dumbarton, Virginia, with an average temperature fluctuating between 40.6°F (4.8°C) and 56.7°F (13.7°C). The onset of November coincides with a reduction in the average high-temperature, falling from an agreeable 69.3°F (20.7°C) in October to a mild 56.7°F (13.7°C). Weather in November »
Weather in December
December, the first month of the winter in Dumbarton, is still a chilly month, with an average temperature ranging between max 49.1°F (9.5°C) and min 34.9°F (1.6°C). In Dumbarton, entering December brings a subtle temperature decrement, reducing from November's mild 56.7°F (13.7°C) to a chilly 49.1°F (9.5°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Dumbarton?
With average temperatures fluctuating between a high of 44.2°F (6.8°C) and a low of 29.5°F (-1.4°C), January stands out as the coldest month in Dumbarton.
How many days does it rain in Dumbarton?
Throughout the year, in Dumbarton, there are 151.1 rainfall days, and 26.22" (666mm) of precipitation is accumulated.
When does it snow in Dumbarton?
Months with snowfall in Dumbarton are January through April, November and December.
How much does it snow in Dumbarton?
Throughout the year, in Dumbarton, there are 10.5 snowfall days, and 6.42" (163mm) of snow is accumulated.
What is the month with the lowest UV index in Dumbarton?
The months with the lowest UV index in Dumbarton, Virginia, are January, February and December, with an average maximum UV index of 2.
When does it snow the most in Dumbarton?
The month with the most snowfall in Dumbarton is February, when snow falls for 3.5 days and typically aggregates up to 1.77" (45mm) of snow.
When is Daylight Saving Time (DST) in Dumbarton?
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 Dumbarton?
In Dumbarton, Virginia, snow does not fall in May through October.
When are the longest days in Dumbarton?
June has the longest days of the year in Dumbarton, Virginia, with an average of 14h and 42min of daylight.
What part of the year is the hottest in Dumbarton?
In Dumbarton, the average highest temperatures are observed in July, with a high of 90.7°F (32.6°C) and a low of 69.6°F (20.9°C).
What is the least humid month in Dumbarton?
July is the least humid month, with an average relative humidity of 68%.
What month has the most sunshine in Dumbarton?
July has the most sunshine of the year in Dumbarton, with an average of 10.6h of sunshine.
When is the highest UV index in Dumbarton?
July is the month with the highest UV index in Dumbarton, with an average maximum UV index of 7.
What is the rainiest month in Dumbarton?
The month with the most rainfall is August, when the rain falls for 15.1 days and typically aggregates up to 2.72" (69mm) of precipitation.
What is the driest month in Dumbarton?
The month with the least rainfall in Dumbarton, Virginia, is September, when the rain falls for 12.5 days and typically collects 1.65" (42mm) of precipitation.
What is the most humid month in Dumbarton?
The most humid month is December, with an average relative humidity of 78%.
What is the month with the shortest days in Dumbarton?
The month with the shortest days is December, with an average of 9h and 36min of daylight.
What is the month with the least sunshine in Dumbarton?
December has the least sunshine of the year, with an average of 5.2h of sunshine.
Average temperature
Dumbarton, VA
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (44.2°F).
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure
Dumbarton, VA
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
30"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.12"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
Dumbarton, VA
- Average wind speed in January:
6.6mph - Average wind speed in February:
6.8mph - Average wind speed in March:
7mph - Average wind speed in April:
7.4mph - Average wind speed in May:
6.3mph - Average wind speed in June:
5.9mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.7mph - Average wind speed in October:
6.2mph - Average wind speed in November:
6.2mph - Average wind speed in December:
6mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity
Dumbarton, VA
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (68%).
Average rainfall
Dumbarton, VA
- Average rainfall in January:
1.89" - Average rainfall in February:
2.05" - Average rainfall in March:
2.32" - Average rainfall in April:
2.36" - Average rainfall in May:
2.36" - Average rainfall in June:
2.24"
- Average rainfall in July:
2.32" - Average rainfall in August:
2.72" - Average rainfall in September:
1.65" - Average rainfall in October:
2.2" - Average rainfall in November:
2.17" - Average rainfall in December:
1.93"
The wettest month (with the highest rainfall) is August (2.72").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days
Dumbarton, VA
- Average rainfall days in January:
9.6 days - Average rainfall days in February:
10.2 days - Average rainfall days in March:
14.1 days - Average rainfall days in April:
15 days - Average rainfall days in May:
16.6 days - Average rainfall days in June:
13.9 days
- Average rainfall days in July:
14.7 days - Average rainfall days in August:
15.1 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
10.1 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is November (8.8 days).
Average snowfall
Dumbarton, VA
The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Dumbarton, VA
- Average snowfall days in January:
3.3 days - Average snowfall days in February:
3.5 days - Average snowfall days in March:
1.5 days - Average snowfall days in April:
0.3 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:
0.4 days - Average snowfall days in December:
1.5 days
The month with the highest number of snowfall days is February (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Dumbarton, 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 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 3min - 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 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
5h and 2min - Average sunshine in February:
5h and 2min - Average sunshine in March:
6h and 4min - Average sunshine in April:
9h and 1min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 4min - 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 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days
Dumbarton, VA
- Average sunshine days in January:
18.4 days - Average sunshine days in February:
15.2 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
11.9 days - Average sunshine days in June:
14.2 days
- Average sunshine days in July:
14.4 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
19.2 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.9 days).
Average UV index
Dumbarton, VA
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover
Dumbarton, VA
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Dumbarton, 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).
Dumbarton, Virginia, USA
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