January weather forecast
Manchester, CT

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Weather in January

January ushers in the coldest temperatures in Manchester, Connecticut, USA, with a chillier atmosphere quite pervasive throughout the month. This is a month characterized by fresh snowfall, transforming the city into a winter wonderland. The daylight is condensed, rendering most days with shorter periods of sunshine. January also marks the beginning of the year with pressure shifts in the atmosphere. All these factors, coupled with an average low temperature of 21.2°F (-6°C) and a snowfall of 3.39" (86mm), contribute to the crisp and frosty conditions of the month.

Temperature

With an average high-temperature of 32.9°F (0.5°C) and an average low-temperature of 21.2°F (-6°C), January is the coldest month in Manchester.

Humidity

The average relative humidity in January is 76%.

Rainfall

In Manchester, in January, during 10 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. In Manchester, during the entire year, the rain falls for 164.8 days and collects up to 31.77" (807mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In January, it is snowing for 7.8 days. Throughout January, 3.39" (86mm) of snow is accumulated. Throughout the year, there are 31.6 snowfall days, and 17.13" (435mm) of snow is accumulated.

Daylight

In Manchester, the average length of the day in January is 9h and 34min.
On the first day of the month, sunrise is at 7:17 am and sunset at 4:29 pm. On the last day of January, sunrise is at 7:03 am and sunset at 5:03 pm EST.

Sunshine

In January, the average sunshine is 5.1h.

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 of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 2 during January, leads to the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

January, with average temperatures reaching a high of 32.9°F (0.5°C) and a low of 21.2°F (-6°C), is the coldest month.

How cold is January?

January temperatures vary between a high-temperature of 32.9°F (0.5°C) and a low-temperature of 21.2°F (-6°C).

What is the average humidity in January?

In January, the average relative humidity is 76%.

How much does it rain in January?

In Manchester, in January, during 10 rainfall days, 2.28" (58mm) of precipitation is typically accumulated.

How much does it snow in January?

In Manchester, during January, snow falls for 7.8 days and regularly aggregates up to 3.39" (86mm) of snow.

What is the average length of the day in January?

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

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:17 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 5:03 pm EST.

How long on average sun shines in January?

The average sunshine duration in January is 5.1h.

When is the lowest UV index?

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?

The average daily maximum UV index in January in Manchester is 2. A UV Index reading of 2, and below, represents a minimal hazard to health 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
Manchester, CT

Average temperature in January - Manchester, CT
  • Average high temperature in January: 32.9°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in January: 21.2°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

Average pressure in January
Manchester, CT

Average pressure in January - Manchester, CT
  • 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).

Average wind speed in January
Manchester, CT

Average wind speed in January - Manchester, CT
  • Average wind speed in January: 8.1mph

The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in January
Manchester, CT

Average humidity in January - Manchester, CT
  • Average humidity in January: 76%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).

Average rainfall in January
Manchester, CT

Average rainfall in January - Manchester, CT
  • Average rainfall in January: 2.28"

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in January
Manchester, CT

Average rainfall days in January - Manchester, CT
  • Average rainfall days in January: 10 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (10 days).

Average snowfall in January
Manchester, CT

Average snowfall in January - Manchester, CT
  • Average snowfall in January: 3.39"

The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Manchester, CT

Average snowfall days in January - Manchester, CT
  • Average snowfall days in January: 7.8 days

The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Manchester, 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 1min

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

Average sunshine days in January
Manchester, CT

Average sunshine days in January - Manchester, CT
  • Average sunshine days in January: 17 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (11.2 days).

Average UV index in January
Manchester, CT

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

The months with the highest UV index are June and July (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
Manchester, CT

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

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

Average visibility in January
Manchester, CT

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

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

Manchester, Connecticut, USA

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