Climate and monthly weather forecast
Roslyn Hills, VA

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Weather in January

January, the same as December, in Roslyn Hills, Virginia, is another chilly winter month, with temperature in the range of an average low of 29.5°F (-1.4°C) and an average high of 44.2°F (6.8°C). January, with its high-temperature average of 44.2°F (6.8°C) and a low-temperature average of 29.5°F (-1.4°C), is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is another chilly month in Roslyn Hills, Virginia, with an average temperature fluctuating between 49.1°F (9.5°C) and 31.8°F (-0.1°C). The advent of February brings an average high-temperature of a still frosty 49.1°F (9.5°C), exhibiting minor difference from the previous month. Weather in February »

Weather in March

March, the first month of the spring in Roslyn Hills, is a moderate month, with temperature in the range of an average low of 38.8°F (3.8°C) and an average high of 55.9°F (13.3°C). In Roslyn Hills, the average high-temperature in March slightly increases from a chilly 49.1°F (9.5°C) in February to a refreshing 55.9°F (13.3°C). Weather in March »

Weather in April

April in Roslyn Hills, Virginia, is a pleasant spring month, with an average temperature fluctuating between 49.1°F (9.5°C) and 68.2°F (20.1°C). Roslyn Hills's weather in April presents a rise in the average high-temperature, moving from a refreshing 55.9°F (13.3°C) in March to a pleasant 68.2°F (20.1°C). Weather in April »

Weather in May

May, the last month of the spring in Roslyn Hills, is a warm month, with an average temperature ranging between max 78.1°F (25.6°C) and min 58.1°F (14.5°C). The start of May brings a rise in the average high-temperature, moving 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 also a moderately hot month in Roslyn Hills, Virginia, with an average temperature varying between 85.6°F (29.8°C) and 65.3°F (18.5°C). With the start of June, the average high-temperature marginally shifts from May's warm 78.1°F (25.6°C) to a still moderately hot 85.6°F (29.8°C). Weather in June »

Weather in July

July in Roslyn Hills, Virginia, is a tropical summer month, with an average temperature ranging between min 69.6°F (20.9°C) and max 90.7°F (32.6°C). With average temperatures fluctuating between a high of 90.7°F (32.6°C) and a low of 69.6°F (20.9°C), July stands out as the warmest month. During July, the heat index is computed to be a blistering 105.8°F (41°C). Weather in July »

Weather in August

August, the last month of the summer in Roslyn Hills, is also a hot month, with temperature in the range of an average low of 68.2°F (20.1°C) and an average high of 88.3°F (31.3°C). With the arrival of August, Roslyn Hills's average high-temperature registers at a still hot 88.3°F (31.3°C), indicating a subtle variation from the previous month. Weather in August »

Weather in September

September, the first month of the autumn in Roslyn Hills, is also a moderately hot month, with temperature in the range of an average low of 62.6°F (17°C) and an average high of 81.3°F (27.4°C). Roslyn Hills's transition into September involves a gentle shift in temperature, receding from a tropical 88.3°F (31.3°C) in August to a warm 81.3°F (27.4°C). Weather in September »

Weather in October

October, like September, is another pleasant autumn month in Roslyn Hills, Virginia, with an average temperature varying between 69.3°F (20.7°C) and 51.8°F (11°C). October suggests a modest reduction in the average high-temperature, shifting from a warm 81.3°F (27.4°C) in September to an agreeable 69.3°F (20.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a moderate month in Roslyn Hills, Virginia, with an average temperature fluctuating between 40.6°F (4.8°C) and 56.7°F (13.7°C). In November, the average high-temperature decreases from an agreeable 69.3°F (20.7°C) in October to a refreshing 56.7°F (13.7°C). Weather in November »

Weather in December

December, the first month of the winter in Roslyn Hills, is still a chilly month, with temperature in the range of an average high of 49.1°F (9.5°C) and an average low of 34.9°F (1.6°C). During the shift to December, a minor reduction in average high-temperature is observed, shifting from a mild 56.7°F (13.7°C) in November to a frosty 49.1°F (9.5°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in Roslyn Hills?

The coldest period is January, when temperatures fluctuate between an average high of 44.2°F (6.8°C) and a low of 29.5°F (-1.4°C).

How many days does it rain in Roslyn Hills?

Throughout the year, in Roslyn Hills, there are 151.1 rainfall days, and 26.22" (666mm) of precipitation is accumulated.

When does it snow in Roslyn Hills?

January through April, November and December are months with snowfall in Roslyn Hills.

How many days does it snow in Roslyn Hills?

Throughout the year, in Roslyn Hills, there are 10.5 snowfall days, and 6.42" (163mm) of snow is accumulated.

When is the lowest UV index in Roslyn Hills?

The months with the lowest UV index in Roslyn Hills, Virginia, are January, February and December, with an average maximum UV index of 2.

When does it snow the most in Roslyn Hills?

February is the month with the most snowfall in Roslyn Hills, Virginia. Snow falls for 3.5 days and accumulates 1.77" (45mm) of snow.

When is Daylight Saving Time (DST) in Roslyn Hills?

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 Roslyn Hills?

In Roslyn Hills, snow does not fall in May through October.

When are the longest days in Roslyn Hills?

The month with the longest days in Roslyn Hills, Virginia, is June, with an average of 14h and 42min of daylight.

What time of the year is the hottest in Roslyn Hills?

Roslyn Hills's temperature records reveal July as the warmest month, marked by average highs of 90.7°F (32.6°C) and lows of 69.6°F (20.9°C).

What is the least humid month in Roslyn Hills?

July is the least humid month, with an average relative humidity of 68%.

What month has the most sunshine in Roslyn Hills?

With an average of 10.6h of sunshine, July has the most sunshine of the year.

What is the month with the highest UV index in Roslyn Hills?

July is the month with the highest UV index in Roslyn Hills, with an average maximum UV index of 7.

What is the rainiest month in Roslyn Hills?

August is the month with the most rainfall. Rain falls for 15.1 days and accumulates 2.72" (69mm) of precipitation.

What is the driest month in Roslyn Hills?

September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 1.65" (42mm) of precipitation.

What is the most humid month in Roslyn Hills?

With an average relative humidity of 78%, December is the most humid month in Roslyn Hills, Virginia.

What is the month with the shortest days in Roslyn Hills?

December has the shortest days of the year, with an average of 9h and 36min of daylight.

What is the month with the least sunshine in Roslyn Hills?

The month with the least sunshine is December, with an average of 5.2h of sunshine.

Average temperature
Roslyn Hills, VA

Average temperature - Roslyn Hills, 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).

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Average pressure
Roslyn Hills, VA

Average pressure - Roslyn Hills, 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).

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Average wind speed
Roslyn Hills, VA

Average wind speed - Roslyn Hills, VA

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).

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Average rainfall
Roslyn Hills, VA

Average rainfall - Roslyn Hills, VA

The wettest month (with the highest rainfall) is August (2.72").
The driest month (with the least rainfall) is September (1.65").

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Average rainfall days
Roslyn Hills, VA

Average rainfall days - Roslyn Hills, VA

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).

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Average snowfall
Roslyn Hills, VA

Average snowfall - Roslyn Hills, 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").

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Average snowfall days
Roslyn Hills, VA

Average snowfall days - Roslyn Hills, VA

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).

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Average daylight / Average sunshine
Roslyn Hills, VA

Average daylight / Average sunshine - Roslyn Hills, VA

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).

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).

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Average sunshine days
Roslyn Hills, VA

Average sunshine days - Roslyn Hills, VA

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.9 days).

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Average visibility
Roslyn Hills, VA

Average visibility - Roslyn Hills, 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).

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Roslyn Hills, Virginia, USA

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