January weather forecast
Alexandria, VA

Weather in January

January, the same as December, is a wintry winter month in Alexandria, Virginia, with an average temperature fluctuating between 40.6°F (4.8°C) and 27.7°F (-2.4°C).

Temperature

With an average high-temperature of 40.6°F (4.8°C) and an average low-temperature of 27.7°F (-2.4°C), January is the coldest month.

Humidity

The average relative humidity in January in Alexandria is 72%.

Rainfall

In Alexandria, during 9.9 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. In Alexandria, during the entire year, the rain falls for 158.2 days and collects up to 30.67" (779mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. The month with the most snowfall in Alexandria, Virginia, is January, when snow falls for 4.5 days and typically aggregates up to 2.48" (63mm) of snow.

Ocean temperature

In Alexandria, the average seawater temperature in January is 47.1°F (8.4°C).
Note: Swimming in 47.1°F (8.4°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in January in Alexandria is 9h and 49min.
On the first day of the month, sunrise is at 7:26 am and sunset at 4:57 pm. On the last day of January, in Alexandria, sunrise is at 7:14 am and sunset at 5:28 pm EST.

Sunshine

In Alexandria, the average sunshine in January is 5.2h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Alexandria, Virginia. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 2 in January transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Alexandria?

The coldest month in Alexandria, Virginia, is January, with an average high-temperature of 40.6°F (4.8°C) and an average low-temperature of 27.7°F (-2.4°C).

What is the temperature in January in Alexandria?

The average high-temperature, in January, is 40.6°F (4.8°C), while the average low-temperature is 27.7°F (-2.4°C).

What is the average humidity in January in Alexandria?

The average relative humidity in January in Alexandria is 72%.

How many days does it rain in January in Alexandria?

In Alexandria, Virginia, in January, it is raining for 9.9 days, with typically 2.05" (52mm) of accumulated precipitation.

What is the snowiest month in Alexandria?

The month with the most snowfall is January, when snow falls for 4.5 days and typically aggregates up to 2.48" (63mm) of snow.

How many days does it snow in January in Alexandria?

In Alexandria, in January, during 4.5 snowfall days, 2.48" (63mm) of snow is typically accumulated.

How cold is the water in January in Alexandria?

In Alexandria, in January, the average water temperature is 47.1°F (8.4°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in January in Alexandria?

In January, the average day length in Alexandria is 9h and 49min.

When is the sunrise / sunset in January in Alexandria?

In January, on the first day of the month, sunrise is at 7:26 am and sunset at 4:57 pm. On the last day of the month, in Alexandria, sunrise is at 7:14 am and sunset at 5:28 pm EST.

How many hours of sunshine does Alexandria have in January?

In January, the average sunshine duration in Alexandria, Virginia, is 5.2h.

What is the month with the lowest UV index in Alexandria?

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

How high is the UV index in January in Alexandria?

The average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Alexandria, VA

Average temperature in January - Alexandria, VA
  • Average high temperature in January: 40.6°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in January: 27.7°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 (27.7°F).

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Average pressure in January
Alexandria, VA

Average pressure in January - Alexandria, VA
  • Average pressure in January: 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).

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Average wind speed in January
Alexandria, VA

Average wind speed in January - Alexandria, VA
  • Average wind speed in January: 7.5mph

The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in January
Alexandria, VA

Average humidity in January - Alexandria, VA
  • Average humidity in January: 72%

The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).

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Average rainfall in January
Alexandria, VA

Average rainfall in January - Alexandria, VA
  • Average rainfall in January: 2.05"

The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in January
Alexandria, VA

Average rainfall days in January - Alexandria, VA
  • Average rainfall days in January: 9.9 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in January
Alexandria, VA

Average snowfall in January - Alexandria, VA
  • Average snowfall in January: 2.48"

The month with the highest snowfall is January (2.48").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Alexandria, VA

Average snowfall days in January - Alexandria, VA
  • Average snowfall days in January: 4.5 days

The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in January
Alexandria, VA

Average sea temperature in January - Alexandria, VA
  • Average sea temperature in January: 47.1°F

The best month for swimming (with the highest average sea temperature) is August (78°F).
The coldest month (with the lowest average sea temperature) is February (45.2°F).

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Average daylight in January /
Average sunshine in January
Alexandria, VA

Average daylight in January / Average sunshine in January - Alexandria, VA
  • Average daylight in January: 9h and 49min

The month with the longest days is June (Average daylight: 14h and 50min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 5h and 12min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

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Average sunshine days in January
Alexandria, VA

Average sunshine days in January - Alexandria, VA
  • Average sunshine days in January: 17.6 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in January
Alexandria, VA

Average UV index in January - Alexandria, VA
  • Average UV index in January: 2

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 and December (UV index 2).

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Average cloud cover in January
Alexandria, VA

Average cloud cover in January - Alexandria, VA
  • Average cloud cover in January: 43

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in January
Alexandria, VA

Average visibility in January - Alexandria, VA
  • Average visibility in January: 6mi

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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