January weather forecast
Glastonbury, CT

Weather in January

January, the same as December, is another cold winter month in Glastonbury, Connecticut, with temperature in the range of an average low of 21.2°F (-6°C) and an average high of 33.4°F (0.8°C).

Temperature

With an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 21.2°F (-6°C), January is the coldest month.

Humidity

In Glastonbury, the average relative humidity in January is 76%.

Rainfall

In Glastonbury, it is raining for 9.2 days, with typically 2.2" (56mm) of accumulated precipitation. In Glastonbury, during the entire year, the rain falls for 164.5 days and collects up to 32.09" (815mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall in Glastonbury. In Glastonbury, during January, snow falls for 7.1 days and regularly aggregates up to 2.87" (73mm) of snow. In Glastonbury, during the entire year, snow falls for 29.1 days and aggregates up to 15.63" (397mm) of snow.

Daylight

The average length of the day in January in Glastonbury is 9h and 34min.
On the first day of January, sunrise is at 7:17 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:04 pm EST.

Sunshine

The average sunshine in January is 5.1h.

UV index

In Glastonbury, Connecticut, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Glastonbury?

With an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 21.2°F (-6°C), January is the coldest month.

What is the average humidity in January in Glastonbury?

The average relative humidity in January in Glastonbury, Connecticut, is 76%.

How much does it rain in Glastonbury in January?

In Glastonbury, Connecticut, during January, the rain falls for 9.2 days and regularly aggregates up to 2.2" (56mm) of precipitation.

How much does it snow in Glastonbury in January?

In Glastonbury, in January, snow falls for 7.1 days, with typically accumulated 2.87" (73mm) of snow.

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

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

When are sunrise and sunset in January in Glastonbury?

On the first day of January in Glastonbury, sunrise is at 7:17 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:04 pm EST.

How many hours of sunshine does Glastonbury have in January?

In Glastonbury, the average sunshine duration in January is 5.1h.

What is the UV index reading in January in Glastonbury?

In January, the average daily maximum UV index is 2. A UV Index estimate 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Glastonbury, CT

Average temperature in January - Glastonbury, CT
  • Average high temperature in January: 33.4°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 (33.4°F).

  • Average low temperature in January: 21.2°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

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Average pressure in January
Glastonbury, CT

Average pressure in January - Glastonbury, 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).

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Average wind speed in January
Glastonbury, CT

Average wind speed in January - Glastonbury, 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 months (with the lowest average wind speed) are July and August (5.3mph).

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Average humidity in January
Glastonbury, CT

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

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).

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Average rainfall in January
Glastonbury, CT

Average rainfall in January - Glastonbury, CT
  • Average rainfall in January: 2.2"

The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in January
Glastonbury, CT

Average rainfall days in January - Glastonbury, CT
  • Average rainfall days in January: 9.2 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is January (9.2 days).

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Average snowfall in January
Glastonbury, CT

Average snowfall in January - Glastonbury, CT
  • Average snowfall in January: 2.87"

The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
Glastonbury, CT

Average snowfall days in January - Glastonbury, CT
  • Average snowfall days in January: 7.1 days

The month with the highest number of snowfall days is February (8.1 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
Glastonbury, CT

Average daylight in January / Average sunshine in January - Glastonbury, CT
  • Average daylight in January: 9h and 34min

The month with the longest days is June (Average daylight: 15h and 9min).
The month with the shortest days is December (Average daylight: 9h and 13min).

  • Average sunshine in January: 5h and 6min

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).

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Average sunshine days in January
Glastonbury, CT

Average sunshine days in January - Glastonbury, CT
  • Average sunshine days in January: 17.6 days

The month with the most sunshine days is January (17.6 days).
The month with the least sunshine days is June (10.7 days).

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Average UV index in January
Glastonbury, CT

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

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in January
Glastonbury, CT

Average cloud cover in January - Glastonbury, 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).

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Average visibility in January
Glastonbury, CT

Average visibility in January - Glastonbury, 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).

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