January weather forecast
Henniker, NH

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Weather in January

January, the same as December, in Henniker, New Hampshire, is another subzero cold winter month, with an average temperature varying between 27.5°F (-2.5°C) and 14.9°F (-9.5°C).

Temperature

January tends to be the coldest month, with temperatures averaging a daily high of 27.5°F (-2.5°C) and a low of 14.9°F (-9.5°C).

Humidity

The average relative humidity in January in Henniker, New Hampshire, is 84%.

Rainfall

In Henniker, in January, during 8.2 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, there are 149.8 rainfall days, and 27.95" (710mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Henniker. In January, it is snowing for 11.8 days. Throughout January, 6.73" (171mm) of snow is accumulated. In Henniker, during the entire year, snow falls for 54.7 days and aggregates up to 34.06" (865mm) of snow.

Daylight

In January, the average length of the day is 9h and 25min.
On the first day of the month, sunrise is at 7:19 am and sunset at 4:22 pm. On the last day of January, sunrise is at 7:03 am and sunset at 4:57 pm EST.

Sunshine

The average sunshine in January in Henniker is 4.7h.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 2 in January leads to these recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Frequently asked questions

What are the coldest months in Henniker?

January is the coldest month of the year in Henniker, New Hampshire, registering average temperatures as high as 27.5°F (-2.5°C) and as low as 14.9°F (-9.5°C).

How cold is it in Henniker in January?

Henniker in January has an average high-temperature of 27.5°F (-2.5°C) and an average low-temperature of 14.9°F (-9.5°C).

What is the average humidity in January in Henniker?

The average relative humidity in January is 84%.

How many days does it rain in January in Henniker?

In Henniker, during January, the rain falls for 8.2 days and regularly aggregates up to 1.93" (49mm) of precipitation.

How much does it snow in Henniker in January?

In Henniker, New Hampshire, in January, during 11.8 snowfall days, 6.73" (171mm) of snow is typically accumulated.

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

The average day length in January in Henniker, New Hampshire, is 9h and 25min.

When are sunrise and sunset in January in Henniker?

In January, on the first day of the month, sunrise is at 7:19 am and sunset at 4:22 pm. On the last day of the month, in Henniker, sunrise is at 7:03 am and sunset at 4:57 pm EST.

How long on average sun shines in January in Henniker?

The average sunshine duration in January in Henniker is 4.7h.

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

The months with the lowest UV index in Henniker, New Hampshire, are January through March, October through December, with an average maximum UV index of 2.

How high is the UV index in January in Henniker?

In January, the average daily maximum UV index in Henniker is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe 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
Henniker, NH

Average temperature in January - Henniker, NH
  • Average high temperature in January: 27.5°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.5°F).

  • Average low temperature in January: 14.9°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).

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Average pressure in January
Henniker, NH

Average pressure in January - Henniker, NH
  • Average pressure in January: 30.01"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in January
Henniker, NH

Average wind speed in January - Henniker, NH
  • Average wind speed in January: 7.8mph

The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in January
Henniker, NH

Average humidity in January - Henniker, NH
  • Average humidity in January: 84%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in January
Henniker, NH

Average rainfall in January - Henniker, NH
  • Average rainfall in January: 1.93"

The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in January
Henniker, NH

Average rainfall days in January - Henniker, NH
  • Average rainfall days in January: 8.2 days

The months with the highest number of rainy days are May and June (15.8 days).
The month with the least rainy days is February (8.1 days).

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Average snowfall in January
Henniker, NH

Average snowfall in January - Henniker, NH
  • Average snowfall in January: 6.73"

The month with the highest snowfall is February (8.62").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Henniker, NH

Average snowfall days in January - Henniker, NH
  • Average snowfall days in January: 11.8 days

The month with the highest number of snowfall days is March (12.2 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
Henniker, NH

Average daylight in January / Average sunshine in January - Henniker, NH
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in January: 4h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in January
Henniker, NH

Average sunshine days in January - Henniker, NH
  • Average sunshine days in January: 15.3 days

The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is March (11.3 days).

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Average UV index in January
Henniker, NH

Average UV index in January - Henniker, NH
  • Average UV index in January: 2

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in January
Henniker, NH

Average cloud cover in January - Henniker, NH
  • Average cloud cover in January: 48

The month with the most cloud cover is March (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in January
Henniker, NH

Average visibility in January - Henniker, NH
  • Average visibility in January: 5mi

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

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Henniker, New Hampshire, USA

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