January weather forecast
West Yarmouth, MA

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Weather in January

January, the same as December, is a wintry winter month in West Yarmouth, Massachusetts, with an average temperature fluctuating between 30.6°F (-0.8°C) and 38.5°F (3.6°C).

Temperature

In West Yarmouth, the lowest temperatures are generally noted in January, averaging a high of 38.5°F (3.6°C) and a low of 30.6°F (-0.8°C).

Humidity

In January, the average relative humidity is 75%.

Rainfall

In West Yarmouth, during January, the rain falls for 8.4 days and regularly aggregates up to 1.06" (27mm) of precipitation. In West Yarmouth, during the entire year, the rain falls for 129 days and collects up to 14.21" (361mm) of precipitation.

Snowfall

Months with snowfall are January through April and December. The month with the most snowfall is January, when snow falls for 6.4 days and typically aggregates up to 0.87" (22mm) of snow.

Daylight

The average length of the day in January is 9h and 34min.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:21 pm. On the last day of January, in West Yarmouth, sunrise is at 6:54 am and sunset at 4:54 pm EST.

Sunshine

The average sunshine in January is 4.8h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 2 during January translates into the following directions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

January brings the lowest temperatures, with an average high of 38.5°F (3.6°C) and an average low of 30.6°F (-0.8°C).

Is January cold?

During January, West Yarmouth experiences an average high-temperature of 38.5°F (3.6°C) and a low-temperature of 30.6°F (-0.8°C).

What is the average humidity in January?

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

How many days does it rain in January?

In West Yarmouth, in January, during 8.4 rainfall days, 1.06" (27mm) of precipitation is typically accumulated.

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 6.4 days and typically aggregates up to 0.87" (22mm) of snow.

How many days does it snow in January?

In West Yarmouth, in January, during 6.4 snowfall days, 0.87" (22mm) of snow is typically accumulated.

How many hours of daylight does West Yarmouth have in January?

In West Yarmouth, the average day length in January is 9h and 34min.

What time are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:07 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 4:54 pm EST.

How long on average sun shines in January?

The average sunshine duration in January is 4.8h.

When is the lowest UV index?

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

What is the UV index reading in January?

In West Yarmouth, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health threat 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
West Yarmouth, MA

Average temperature in January - West Yarmouth, MA
  • Average high temperature in January: 38.5°F

The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is January (38.5°F).

  • Average low temperature in January: 30.6°F

The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in January
West Yarmouth, MA

Average pressure in January - West Yarmouth, MA
  • Average pressure in January: 30"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in January
West Yarmouth, MA

Average wind speed in January - West Yarmouth, MA
  • Average wind speed in January: 16.8mph

The windiest month (with the highest average wind speed) is January (16.8mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).

Average humidity in January
West Yarmouth, MA

Average humidity in January - West Yarmouth, MA
  • Average humidity in January: 75%

The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (74%).

Average rainfall in January
West Yarmouth, MA

Average rainfall in January - West Yarmouth, MA
  • Average rainfall in January: 1.06"

The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is August (0.94").

Average rainfall days in January
West Yarmouth, MA

Average rainfall days in January - West Yarmouth, MA
  • Average rainfall days in January: 8.4 days

The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (8.3 days).

Average snowfall in January
West Yarmouth, MA

Average snowfall in January - West Yarmouth, MA
  • Average snowfall in January: 0.87"

The month with the highest snowfall is January (0.87").
The months with the least snowfall are May, June, July, August, September, October and November (0").

Average snowfall days in January
West Yarmouth, MA

Average snowfall days in January - West Yarmouth, MA
  • Average snowfall days in January: 6.4 days

The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
West Yarmouth, MA

Average daylight in January / Average sunshine in January - West Yarmouth, MA
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in January: 4h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

Average sunshine days in January
West Yarmouth, MA

Average sunshine days in January - West Yarmouth, MA
  • Average sunshine days in January: 15.4 days

The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (14.3 days).

Average UV index in January
West Yarmouth, MA

Average UV index in January - West Yarmouth, MA
  • 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, November and December (UV index 2).

Average cloud cover in January
West Yarmouth, MA

Average cloud cover in January - West Yarmouth, MA
  • Average cloud cover in January: 48

The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in January
West Yarmouth, MA

Average visibility in January - West Yarmouth, MA
  • Average visibility in January: 6mi

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

West Yarmouth, Massachusetts, USA

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