January weather forecast and climate
Mount Washington, NH

Weather in January

January, like December, is another subzero cold winter month in Mount Washington, New Hampshire, with average temperature varying between 8.4°F (-13.1°C) and 21.7°F (-5.7°C).

Temperature

With an average high-temperature of 21.7°F (-5.7°C) and an average low-temperature of 8.4°F (-13.1°C), January is the coldest month.

Humidity

In Mount Washington, New Hampshire, the average relative humidity is 89%.

Rainfall

In Mount Washington, during January, the rain falls for 8.5 days and regularly aggregates up to 1.65" (42mm) of precipitation. Throughout the year, there are 144.9 rainfall days, and 20.08" (510mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Mount Washington. The month with the most snowfall in Mount Washington is January when snow falls for 20.4 days and typically aggregates up to 11.42" (290mm) of snow.

Daylight

In Mount Washington, the average length of the day in January is 9.3h.

Sunshine

In Mount Washington, the average sunshine is 3.8h.

UV index

In January, the average daily maximum UV index in Mount Washington is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV radiation for average individuals.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 Mount Washington?

With an average high-temperature of 21.7°F (-5.7°C) and an average low-temperature of 8.4°F (-13.1°C), January is the coldest month in Mount Washington.

What is the temperature in January in Mount Washington?

In January, in Mount Washington, the average high-temperature is 21.7°F (-5.7°C), and the average low-temperature is 8.4°F (-13.1°C).

What is the average humidity in January in Mount Washington?

In January, the average relative humidity is 89%.

How many days does it rain in January in Mount Washington?

In Mount Washington, New Hampshire, in January, during 8.5 rainfall days, 1.65" (42mm) of precipitation is typically accumulated.

How many days does it snow in January in Mount Washington?

In Mount Washington, in January, snow falls for 20.4 days, with typically accumulated 11.42" (290mm) of snow.

What is the snowiest month in Mount Washington?

The month with the most snowfall in Mount Washington, New Hampshire, is January when snow falls for 20.4 days and typically aggregates up to 11.42" (290mm) of snow.

How many hours of daylight does Mount Washington have in January?

The average length of the day in January in Mount Washington is 9.3h.

How long on average sun shines in January in Mount Washington?

In Mount Washington, the average sunshine in January is 3.8h.

What is the UV index reading in January in Mount Washington?

In Mount Washington, New Hampshire, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV rays.

Average temperature in January
Mount Washington, NH

Average temperature in January - Mount Washington, NH
  • Average high temperature in January: 21.7°F

The warmest month (with the highest average high temperature) is July (75°F).
The month with the lowest average high temperature is January (21.7°F).

  • Average low temperature in January: 8.4°F

The month with the highest average low temperature is July (54.7°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).

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Average pressure in January
Mount Washington, NH

Average pressure in January - Mount Washington, NH
  • Average pressure in January: 30"

The month with the highest atmospheric pressure is November (30.06").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in January
Mount Washington, NH

Average wind speed in January - Mount Washington, NH
  • Average wind speed in January: 9.6mph

The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).

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Average humidity in January
Mount Washington, NH

Average humidity in January - Mount Washington, NH
  • Average humidity in January: 89%

The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (77%).

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Average rainfall in January
Mount Washington, NH

Average rainfall in January - Mount Washington, NH
  • Average rainfall in January: 1.65"

The wettest month (with the highest rainfall) is April (2.44").
The driest month (with the least rainfall) is September (0.94").

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Average rainfall days in January
Mount Washington, NH

Average rainfall days in January - Mount Washington, NH
  • Average rainfall days in January: 8.5 days

The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is November (8 days).

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Average snowfall in January
Mount Washington, NH

Average snowfall in January - Mount Washington, NH
  • Average snowfall in January: 11.42"

The month with the highest snowfall is January (11.42").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Mount Washington, NH

Average snowfall days in January - Mount Washington, NH
  • Average snowfall days in January: 20.4 days

The month with the highest number of snowfall days is January (20.4 days).
Months with the least snowfall days are July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Mount Washington, NH

Average daylight in January / Average sunshine in January - Mount Washington, NH
  • Average daylight in January: 9.3h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in January: 3.8h

The month with the most sunshine is August (Average sunshine: 9.8h).
The month with the least sunshine is February (Average sunshine: 3.5h).

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Average sunshine days in January
Mount Washington, NH

Average sunshine days in January - Mount Washington, NH
  • Average sunshine days in January: 10.3 days

The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is February (7.8 days).

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Average UV index in January
Mount Washington, NH

Average UV index in January - Mount Washington, NH
  • Average UV index in January: 2

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in January
Mount Washington, NH

Average cloud cover in January - Mount Washington, NH
  • Average cloud cover in January: 62

The month with the most cloud cover is February (Cloud cover 64).
Months with the least cloud cover are July, August and September (Cloud cover 41).

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Average visibility in January
Mount Washington, NH

Average visibility in January - Mount Washington, NH
  • Average visibility in January: 4mi

Months with the highest visibility are May, June and July (5mi).
Months with the lowest visibility are January, February, March, April, August, September, October, November and December (4mi).

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