January weather forecast
Stonington, CT

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The classy and nice riverside homes by the Mystic River in Stonington, Connecticut
The classy and nice riverside homes by the Mystic River in Stonington, Connecticut

Weather in January

Starting the year in Stonington, Connecticut, January showcases improvements in the amount of daily sunshine as compared to the last month of the previous year. However, the city experiences its coldest phase during this time. The average temperature hovers from 26.6°F (-3°C) to 36.5°F (2.5°C), with the lowest visibility at 6 miles due to dense fog. As the month progresses, the days gradually become longer. Comforting indoor activities are favored in the city due to these chilly conditions.

Temperature

January, on average, is the coldest month, registering a high temperature of 36.5°F (2.5°C) and a low of 26.6°F (-3°C).

Humidity

January, March, April and November, with an average relative humidity of 74%, are the least humid months.

Rainfall

In Stonington, in January, during 10.8 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Stonington, during the entire year, the rain falls for 166.1 days and collects up to 34.09" (866mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Stonington, in January, snow falls for 6.8 days, with typically accumulated 1.65" (42mm) of snow. Throughout the year, there are 24.7 snowfall days, and 7.87" (200mm) of snow is accumulated.

Daylight

In January, the average length of the day in Stonington is 9h and 36min.
On the first day of the month, sunrise is at 7:13 am and sunset at 4:28 pm. On the last day of January, in Stonington, sunrise is at 6:59 am and sunset at 5:01 pm EST.

Sunshine

In Stonington, the average sunshine in January is 5.2h.

UV index

January through March and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum UV index of 2 in January translates into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Stonington?

In Stonington, the average lowest temperatures are observed in January, with a high of 36.5°F (2.5°C) and a low of 26.6°F (-3°C).

How cold is January?

An average high-temperature, in January, in Stonington, is 36.5°F (2.5°C) and the average low-temperature is 26.6°F (-3°C).

What is the least humid month?

The months with the lowest humidity are January, March, April and November, with an average relative humidity of 74%.

What is the average humidity in January?

In Stonington, the average relative humidity in January is 74%.

How much does it rain in January?

In Stonington, during January, the rain falls for 10.8 days and regularly aggregates up to 2.68" (68mm) of precipitation.

How many days does it snow in January?

In Stonington, in January, during 6.8 snowfall days, 1.65" (42mm) of snow is typically accumulated.

How many hours of daylight does Stonington have in January?

In Stonington, the average day length in January is 9h and 36min.

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:13 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 5:01 pm EST.

How many hours of sunshine does Stonington have in January?

In Stonington, the average sunshine duration in January is 5.2h.

What is the month with the lowest UV index?

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

What is the UV index intensity in January in Stonington?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents 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
Stonington, CT

Average temperature in January - Stonington, CT
  • Average high temperature in January: 36.5°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in January: 26.6°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

Average pressure in January
Stonington, CT

Average pressure in January - Stonington, 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
Stonington, CT

Average wind speed in January - Stonington, CT
  • Average wind speed in January: 12.4mph

The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).

Average humidity in January
Stonington, CT

Average humidity in January - Stonington, CT
  • Average humidity in January: 74%

The month with the highest relative humidity is June (81%).
The months with the lowest relative humidity are January, March, April and November (74%).

Average rainfall in January
Stonington, CT

Average rainfall in January - Stonington, CT
  • Average rainfall in January: 2.68"

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in January
Stonington, CT

Average rainfall days in January - Stonington, CT
  • Average rainfall days in January: 10.8 days

The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (10.1 days).

Average snowfall in January
Stonington, CT

Average snowfall in January - Stonington, CT
  • Average snowfall in January: 1.65"

The month with the highest snowfall is March (2.44").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
Stonington, CT

Average snowfall days in January - Stonington, CT
  • Average snowfall days in January: 6.8 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Stonington, CT
  • 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 18min).

  • Average sunshine in January: 5h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

Average sunshine days in January
Stonington, CT

Average sunshine days in January - Stonington, CT
  • Average sunshine days in January: 14.8 days

The month with the most sunshine days is November (16.5 days).
The months with the least sunshine days are June and July (11.7 days).

Average UV index in January
Stonington, CT

Average UV index in January - Stonington, 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 and December (UV index 2).

Average cloud cover in January
Stonington, CT

Average cloud cover in January - Stonington, CT
  • Average cloud cover in January: 44

The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in January
Stonington, CT

Average visibility in January - Stonington, CT
  • 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).

Stonington, Connecticut, USA

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