Climate and monthly weather forecast
Dumfries, VA

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Weather in January

January, like December, in Dumfries, Virginia, is an icy winter month, with an average temperature ranging between min 27.5°F (-2.5°C) and max 41.5°F (5.3°C). The month of January, characterized by an average high of 41.5°F (5.3°C) and a low of 27.5°F (-2.5°C), is recognized as the coldest. Weather in January »

Weather in February

February, the last month of the winter in Dumfries, is a chilly month, with an average temperature ranging between min 30°F (-1.1°C) and max 46°F (7.8°C). Stepping into February, Dumfries records an average high-temperature of a frosty 46°F (7.8°C), almost consistent with January. Weather in February »

Weather in March

March, the first month of the spring in Dumfries, is a fresh month, with an average temperature ranging between max 54.1°F (12.3°C) and min 37°F (2.8°C). With the onset of March, Dumfries experiences a subtle temperature shift, with the average high-temperature moving from a frosty 46°F (7.8°C) in February to a fresh 54.1°F (12.3°C). Weather in March »

Weather in April

April in Dumfries, Virginia, is a refreshing spring month, with temperature in the range of an average low of 46.9°F (8.3°C) and an average high of 66.2°F (19°C). April's onset brings a temperature rise, moving from a fresh 54.1°F (12.3°C) in March to a comfortable 66.2°F (19°C). Weather in April »

Weather in May

May, the last month of the spring in Dumfries, is a warm month, with an average temperature fluctuating between 75.6°F (24.2°C) and 56.3°F (13.5°C). Dumfries's weather shows a temperature rise with the arrival of May, moving from an enjoyable 66.2°F (19°C) in April to a warm 75.6°F (24.2°C). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Dumfries, Virginia, with temperature in the range of an average high of 83.5°F (28.6°C) and an average low of 63.7°F (17.6°C). As June arrives, Dumfries's weather shows a minor increase in high-temperatures, edging from May's warm 75.6°F (24.2°C) to a still moderately hot 83.5°F (28.6°C). Weather in June »

Weather in July

July is a hot summer month in Dumfries, Virginia, with an average temperature ranging between max 88.7°F (31.5°C) and min 67.8°F (19.9°C). Dumfries experiences its highest average temperatures in July, reaching a peak of 88.7°F (31.5°C) and a minimum of 67.8°F (19.9°C). During July, the heat index is computed to be a blistering 104°F (40°C). Weather in July »

Weather in August

The last month of the summer, August, is another tropical month in Dumfries, Virginia, with an average temperature fluctuating between 66°F (18.9°C) and 86.2°F (30.1°C). August experiences an average high-temperature of a still hot 86.2°F (30.1°C), barely different from July's 88.7°F (31.5°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Dumfries, Virginia, with an average temperature fluctuating between 61°F (16.1°C) and 79.3°F (26.3°C). As September commences, the average high-temperature subtly reduces, transitioning from a tropical 86.2°F (30.1°C) in August to a warm 79.3°F (26.3°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Dumfries, Virginia, with an average temperature varying between 50.5°F (10.3°C) and 67.1°F (19.5°C). Dumfries's average high-temperature decreases in October, falling from a moderately hot 79.3°F (26.3°C) in September to a refreshing 67.1°F (19.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Dumfries, Virginia, with an average temperature fluctuating between 55.2°F (12.9°C) and 39°F (3.9°C). The shift from October to November involves a decrease in the average high-temperature, dropping from a refreshing 67.1°F (19.5°C) to a cool 55.2°F (12.9°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Dumfries, Virginia, with an average temperature ranging between min 33.6°F (0.9°C) and max 46.9°F (8.3°C). Dumfries experiences a moderate temperature shift at the start of December, with average high-temperatures adjusting a bit from a fresh 55.2°F (12.9°C) in November to a chilly 46.9°F (8.3°C). Weather in December »

Frequently asked questions

What is the coldest month?

In Dumfries, January registers the lowest temperatures, averaging 41.5°F (5.3°C) at the peak and 27.5°F (-2.5°C) at the lowest.

What are the least humid months?

January, April and July, with an average relative humidity of 73%, are the least humid months in Dumfries.

What is the driest month?

The month with the least rainfall is January, when the rain falls for 9.4 days and typically collects 1.97" (50mm) of precipitation.

How many days does it rain?

Throughout the year, there are 155.6 rainfall days, and 31.61" (803mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through April, November and December.

When does it snow the most?

January is the month with the most snowfall. Snow falls for 4.9 days and accumulates 2.52" (64mm) of snow.

How much does it snow?

In Dumfries, during the entire year, snow falls for 13.5 days and aggregates up to 8.23" (209mm) of snow.

What are the months with the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

What is the month with the least sunshine?

The months with the least sunshine are February and December, with an average of 5.1h of sunshine.

When is Daylight Saving Time (DST)?

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?

May through October are months without snowfall.

What are the months with the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

When are the longest days?

June has the longest days of the year in Dumfries, with an average of 14h and 48min of daylight.

What time of the year is the hottest?

In Dumfries, July registers the highest temperatures, averaging 88.7°F (31.5°C) at the peak and 67.8°F (19.9°C) at the lowest.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.5h of sunshine.

What is the rainiest month?

August is the month with the most rainfall. Rain falls for 16 days and accumulates 3.66" (93mm) of precipitation.

What are the most humid months?

October and December, with an average relative humidity of 78%, are most humid months.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 30min of daylight.

Average temperature
Dumfries, VA

Average temperature - Dumfries, VA

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (41.5°F).

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).

Average pressure
Dumfries, VA

Average pressure - Dumfries, VA

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
Dumfries, VA

Average wind speed - Dumfries, VA

The windiest months (with the highest average wind speed) are March and April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity
Dumfries, VA

Average humidity - Dumfries, VA

The months with the highest relative humidity are October and December (78%).
The months with the lowest relative humidity are January, April and July (73%).

Average rainfall
Dumfries, VA

Average rainfall - Dumfries, VA

The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is January (1.97").

Average rainfall days
Dumfries, VA

Average rainfall days - Dumfries, VA

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is November (8.7 days).

Average snowfall
Dumfries, VA

Average snowfall - Dumfries, VA

The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Dumfries, VA

Average snowfall days - Dumfries, VA

The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Dumfries, VA

Average daylight / Average sunshine - Dumfries, VA

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).

Average sunshine days
Dumfries, VA

Average sunshine days - Dumfries, VA

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (11.5 days).

Average UV index
Dumfries, VA

Average UV index - Dumfries, 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 visibility
Dumfries, VA

Average visibility - Dumfries, VA

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

Dumfries, Virginia, USA

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