January weather forecast
Southwick, MA

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Weather in January

January, the same as December, in Southwick, Massachusetts, is another subzero cold winter month, with an average temperature fluctuating between 18.3°F (-7.6°C) and 30.9°F (-0.6°C).

Temperature

January, with its average high-temperature of 30.9°F (-0.6°C) and an average low-temperature of 18.3°F (-7.6°C), holds the record as the coldest month.

Humidity

In Southwick, the average relative humidity in January is 79%.

Rainfall

In January, in Southwick, the rain falls for 7.8 days. Throughout January, 2.28" (58mm) of precipitation is accumulated. Throughout the year, there are 165.4 rainfall days, and 34.45" (875mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Southwick, during January, snow falls for 9.1 days and regularly aggregates up to 4.65" (118mm) of snow. Throughout the year, there are 37.5 snowfall days, and 21.26" (540mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 32min.
On the first day of January in Southwick, sunrise is at 7:19 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:03 pm EST.

Sunshine

In January, the average sunshine is 4.7h.

UV index

The months with the lowest UV index in Southwick are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 2 during January translates into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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Frequently asked questions

What month is the coldest in Southwick?

January stands out as Southwick's coldest month, with an average high-temperature of 30.9°F (-0.6°C) and a low-temperature of 18.3°F (-7.6°C).

How cold is January in Southwick?

January temperatures vary between a high-temperature of 30.9°F (-0.6°C) and a low-temperature of 18.3°F (-7.6°C).

What is the average humidity in January in Southwick?

The average relative humidity in January in Southwick, Massachusetts, is 79%.

How much does it rain in Southwick in January?

In Southwick, Massachusetts, during January, the rain falls for 7.8 days and regularly aggregates up to 2.28" (58mm) of precipitation.

How much does it snow in Southwick in January?

In Southwick, in January, during 9.1 snowfall days, 4.65" (118mm) of snow is typically accumulated.

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

In Southwick, Massachusetts, the average day length in January is 9h and 32min.

When is the sunrise / sunset in January in Southwick?

In January, on the first day of the month, sunrise is at 7:19 am and sunset at 4:29 pm. On the last day of the month, in Southwick, sunrise is at 7:05 am and sunset at 5:03 pm EST.

How many hours of sunshine does Southwick have in January?

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

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

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

How high is the UV index in January in Southwick?

The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk 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
Southwick, MA

Average temperature in January - Southwick, MA
  • Average high temperature in January: 30.9°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in January: 18.3°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

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Average pressure in January
Southwick, MA

Average pressure in January - Southwick, MA
  • Average pressure in January: 30.03"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in January
Southwick, MA

Average wind speed in January - Southwick, MA
  • Average wind speed in January: 8.4mph

The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in January
Southwick, MA

Average humidity in January - Southwick, MA
  • Average humidity in January: 79%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in January
Southwick, MA

Average rainfall in January - Southwick, MA
  • Average rainfall in January: 2.28"

The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (2.17").

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Average rainfall days in January
Southwick, MA

Average rainfall days in January - Southwick, MA
  • Average rainfall days in January: 7.8 days

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in January
Southwick, MA

Average snowfall in January - Southwick, MA
  • Average snowfall in January: 4.65"

The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Southwick, MA

Average snowfall days in January - Southwick, MA
  • Average snowfall days in January: 9.1 days

The month with the highest number of snowfall days is February (9.8 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
Southwick, MA

Average daylight in January / Average sunshine in January - Southwick, MA
  • Average daylight in January: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in January: 4h and 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in January
Southwick, MA

Average sunshine days in January - Southwick, MA
  • Average sunshine days in January: 16.6 days

The month with the most sunshine days is January (16.6 days).
The month with the least sunshine days is June (10.9 days).

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Average UV index in January
Southwick, MA

Average UV index in January - Southwick, MA
  • Average UV index in January: 2

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in January
Southwick, MA

Average cloud cover in January - Southwick, MA
  • Average cloud cover in January: 49

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 37).

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Average visibility in January
Southwick, MA

Average visibility in January - Southwick, MA
  • Average visibility in January: 5mi

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

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Southwick, Massachusetts, USA

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