January weather forecast
Washington, VA

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Weather in January

January, the same as December, is a wintry winter month in Washington, Virginia, with temperature in the range of an average high of 38.7°F (3.7°C) and an average low of 23.9°F (-4.5°C).

Temperature

Washington's temperature records reveal January as the coldest month, marked by average highs of 38.7°F (3.7°C) and lows of 23.9°F (-4.5°C).

Humidity

The average relative humidity in January is 75%.

Rainfall

The month with the least rainfall in Washington is January, when the rain falls for 6.8 days and typically collects 0.94" (24mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Washington, in January, during 5 snowfall days, 2.4" (61mm) of snow is typically accumulated. Throughout the year, there are 17.4 snowfall days, and 9.72" (247mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 49min.
On the first day of the month, sunrise is at 7:30 am and sunset at 5:01 pm. On the last day of January, in Washington, sunrise is at 7:19 am and sunset at 5:32 pm EST.

Sunshine

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

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Washington. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In January, a regular UV index of 2 translates into these guidelines:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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Frequently asked questions

What is the coldest month in Washington?

In Washington, Virginia, the average lowest temperatures are observed in January, with a high of 38.7°F (3.7°C) and a low of 23.9°F (-4.5°C).

How cold does it get in Washington in January?

An average high-temperature, in January, in Washington, is 38.7°F (3.7°C) and the average low-temperature is 23.9°F (-4.5°C).

What is the average humidity in January in Washington?

In Washington, the average relative humidity in January is 75%.

What is the driest month in Washington?

The month with the least rainfall is January, when the rain falls for 6.8 days and typically collects 0.94" (24mm) of precipitation.

How much does it rain in Washington in January?

In Washington, Virginia, in January, during 6.8 rainfall days, 0.94" (24mm) of precipitation is typically accumulated.

How much does it snow in Washington in January?

In January, it is snowing for 5 days. Throughout January, 2.4" (61mm) of snow is accumulated.

How many hours of daylight does Washington have in January?

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

When are sunrise and sunset in January in Washington?

In January, on the first day of the month, sunrise is at 7:30 am and sunset at 5:01 pm. On the last day of the month, in Washington, sunrise is at 7:19 am and sunset at 5:32 pm EST.

How long on average sun shines in January in Washington?

In January, the average sunshine duration is 5.2h.

When is the lowest UV index in Washington?

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

What is the UV index intensity in January in Washington?

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

Average temperature in January
Washington, VA

Average temperature in January - Washington, VA
  • Average high temperature in January: 38.7°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in January: 23.9°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

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Average pressure in January
Washington, VA

Average pressure in January - Washington, 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
Washington, VA

Average wind speed in January - Washington, VA
  • Average wind speed in January: 6.4mph

The windiest months (with the highest average wind speed) are February and March (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

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Average humidity in January
Washington, VA

Average humidity in January - Washington, VA
  • Average humidity in January: 75%

The month with the highest relative humidity is October (79%).
The months with the lowest relative humidity are April and July (74%).

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Average rainfall in January
Washington, VA

Average rainfall in January - Washington, VA
  • Average rainfall in January: 0.94"

The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is January (0.94").

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Average rainfall days in January
Washington, VA

Average rainfall days in January - Washington, VA
  • Average rainfall days in January: 6.8 days

The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is January (6.8 days).

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Average snowfall in January
Washington, VA

Average snowfall in January - Washington, VA
  • Average snowfall in January: 2.4"

The month with the highest snowfall is March (2.56").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Washington, VA

Average snowfall days in January - Washington, VA
  • Average snowfall days in January: 5 days

The month with the highest number of snowfall days is January (5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Washington, VA
  • Average daylight in January: 9h and 5min

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).

  • Average sunshine in January: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in January
Washington, VA

Average sunshine days in January - Washington, VA
  • Average sunshine days in January: 20.5 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is August (11.4 days).

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Average UV index in January
Washington, VA

Average UV index in January - Washington, 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, February, November and December (UV index 2).

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Average cloud cover in January
Washington, VA

Average cloud cover in January - Washington, VA
  • Average cloud cover in January: 44

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in January
Washington, VA

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

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

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Washington, Virginia, USA

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