January weather forecast
Willimantic, CT

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Weather in January

January, like December, in Willimantic, Connecticut, is an icy winter month, with an average temperature fluctuating between 33.4°F (0.8°C) and 21.6°F (-5.8°C).

Temperature

Willimantic experiences its lowest average temperatures in January, reaching a peak of 33.4°F (0.8°C) and a minimum of 21.6°F (-5.8°C).

Humidity

In Willimantic, the average relative humidity in January is 77%.

Rainfall

In Willimantic, during January, the rain falls for 9.1 days and regularly aggregates up to 2.52" (64mm) of precipitation. In Willimantic, during the entire year, the rain falls for 164.2 days and collects up to 33.74" (857mm) of precipitation.

Snowfall

Months with snowfall in Willimantic are January through May, November and December. In Willimantic, during January, snow falls for 8.3 days and regularly aggregates up to 2.91" (74mm) of snow. In Willimantic, during the entire year, snow falls for 31.6 days and aggregates up to 15.98" (406mm) of snow.

Daylight

The average length of the day in January is 9h and 34min.
On the first day of January, sunrise is at 7:15 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:02 pm EST.

Sunshine

The average sunshine in January in Willimantic is 5h.

UV index

The months with the lowest UV index 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 low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index, 2 during January, leads to 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. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in Willimantic?

January stands out as Willimantic's coldest month, with an average high-temperature of 33.4°F (0.8°C) and a low-temperature of 21.6°F (-5.8°C).

How cold is it in Willimantic in January?

In Willimantic, 33.4°F (0.8°C) is the average high-temperature and 21.6°F (-5.8°C) is the average low-temperature during January.

What is the average humidity in January in Willimantic?

In January, the average relative humidity in Willimantic is 77%.

How many days does it rain in January in Willimantic?

In Willimantic, in January, it is raining for 9.1 days, with typically 2.52" (64mm) of accumulated precipitation.

How many days does it snow in January in Willimantic?

In Willimantic, in January, snow falls for 8.3 days, with typically accumulated 2.91" (74mm) of snow.

How many hours of daylight does Willimantic have in January?

The average day length in January in Willimantic, Connecticut, is 9h and 34min.

When is the sunrise / sunset in January in Willimantic?

In January, on the first day of the month, sunrise is at 7:15 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:02 pm EST.

How long on average sun shines in January in Willimantic?

In Willimantic, the average sunshine duration in January is 5h.

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

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

How high is the UV index in January in Willimantic?

The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health threat from exposure to the Sun's 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
Willimantic, CT

Average temperature in January - Willimantic, CT
  • Average high temperature in January: 33.4°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in January: 21.6°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in January
Willimantic, CT

Average pressure in January - Willimantic, CT
  • 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 (29.93"Hg).

Average wind speed in January
Willimantic, CT

Average wind speed in January - Willimantic, CT
  • Average wind speed in January: 8.8mph

The windiest months (with the highest average wind speed) are January and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in January
Willimantic, CT

Average humidity in January - Willimantic, CT
  • Average humidity in January: 77%

The months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (72%).

Average rainfall in January
Willimantic, CT

Average rainfall in January - Willimantic, CT
  • Average rainfall in January: 2.52"

The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in January
Willimantic, CT

Average rainfall days in January - Willimantic, CT
  • Average rainfall days in January: 9.1 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.1 days).

Average snowfall in January
Willimantic, CT

Average snowfall in January - Willimantic, CT
  • Average snowfall in January: 2.91"

The month with the highest snowfall is March (4.41").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in January
Willimantic, CT

Average snowfall days in January - Willimantic, CT
  • Average snowfall days in January: 8.3 days

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Willimantic, CT

Average daylight in January / Average sunshine in January - Willimantic, CT
  • Average daylight in January: 9h and 4min

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: 5h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

Average sunshine days in January
Willimantic, CT

Average sunshine days in January - Willimantic, CT
  • Average sunshine days in January: 16.2 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.8 days).

Average UV index in January
Willimantic, CT

Average UV index in January - Willimantic, CT
  • Average UV index in January: 2

The months with the highest UV index are June, 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
Willimantic, CT

Average cloud cover in January - Willimantic, CT
  • Average cloud cover in January: 45

The months with the most cloud cover are February, March, May and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in January
Willimantic, CT

Average visibility in January - Willimantic, CT
  • Average visibility in January: 6mi

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

Willimantic, Connecticut, USA

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