January weather forecast
Winchester, NH

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Weather in January

January, the same as December, in Winchester, New Hampshire, is a freezing cold winter month, with an average temperature fluctuating between 28.4°F (-2°C) and 16.2°F (-8.8°C).

Temperature

January, recording an average high temperature of 28.4°F (-2°C) and a low temperature of 16.2°F (-8.8°C), is Winchester's coldest month.

Humidity

The average relative humidity in January in Winchester is 83%.

Rainfall

In Winchester, in January, during 8.5 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, in Winchester, there are 146.7 rainfall days, and 27.2" (691mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Winchester, in January, during 9.6 snowfall days, 6.06" (154mm) of snow is typically accumulated. Throughout the year, there are 43.8 snowfall days, and 27.28" (693mm) of snow is accumulated.

Daylight

In Winchester, the average length of the day in January is 9h and 28min.
On the first day of the month, sunrise is at 7:19 am and sunset at 4:25 pm. On the last day of January, sunrise is at 7:05 am and sunset at 5:00 pm EST.

Sunshine

In January, the average sunshine is 5.1h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Winchester. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, the average maximum UV index of 2 translates into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Winchester?

January, having an average high-temperature of 28.4°F (-2°C) and an average low-temperature of 16.2°F (-8.8°C), is the coldest month in Winchester, New Hampshire.

How cold is January in Winchester?

The average high-temperature and low-temperature in Winchester during January are 28.4°F (-2°C) and 16.2°F (-8.8°C) respectively.

What is the average humidity in January in Winchester?

The average relative humidity in January in Winchester is 83%.

How many days does it rain in January in Winchester?

In Winchester, New Hampshire, during January, the rain falls for 8.5 days and regularly aggregates up to 2.17" (55mm) of precipitation.

How much does it snow in Winchester in January?

In January, it is snowing for 9.6 days. Throughout January, 6.06" (154mm) of snow is accumulated.

How many hours of daylight does Winchester have in January?

The average day length in January is 9h and 28min.

When is the sunrise / sunset in January in Winchester?

In January, on the first day of the month, sunrise is at 7:19 am and sunset at 4:25 pm. On the last day of the month, in Winchester, sunrise is at 7:05 am and sunset at 5:00 pm EST.

How many hours of sunshine does Winchester have in January?

In January, the average sunshine duration in Winchester is 5.1h.

What are the months with the lowest UV index in Winchester?

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

What is the UV index reading in January in Winchester?

In January, the average daily maximum UV index in Winchester is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
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
Winchester, NH

Average temperature in January - Winchester, NH
  • Average high temperature in January: 28.4°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (28.4°F).

  • Average low temperature in January: 16.2°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 (16.2°F).

Average pressure in January
Winchester, NH

Average pressure in January - Winchester, NH
  • Average pressure in January: 30.02"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in January
Winchester, NH

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

The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in January
Winchester, NH

Average humidity in January - Winchester, NH
  • Average humidity in January: 83%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (73%).

Average rainfall in January
Winchester, NH

Average rainfall in January - Winchester, NH
  • Average rainfall in January: 2.17"

The wettest month (with the highest rainfall) is October (2.76").
The driest month (with the least rainfall) is September (1.81").

Average rainfall days in January
Winchester, NH

Average rainfall days in January - Winchester, NH
  • Average rainfall days in January: 8.5 days

The month with the highest number of rainy days is June (15.2 days).
The month with the least rainy days is February (8.1 days).

Average snowfall in January
Winchester, NH

Average snowfall in January - Winchester, NH
  • Average snowfall in January: 6.06"

The month with the highest snowfall is February (7.44").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Winchester, NH

Average snowfall days in January - Winchester, NH
  • Average snowfall days in January: 9.6 days

The month with the highest number of snowfall days is February (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Winchester, NH

Average daylight in January / Average sunshine in January - Winchester, NH
  • Average daylight in January: 9h and 3min

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: 5h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in January
Winchester, NH

Average sunshine days in January - Winchester, NH
  • Average sunshine days in January: 16.7 days

The months with the most sunshine days are January and November (16.7 days).
The month with the least sunshine days is June (12.4 days).

Average UV index in January
Winchester, NH

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

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in January
Winchester, NH

Average cloud cover in January - Winchester, NH
  • Average cloud cover in January: 46

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in January
Winchester, NH

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

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

Winchester, New Hampshire, USA

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