January weather forecast and climate
Newtown, CT

Weather in January

January, the same as December, is another cold winter month in Newtown, Connecticut, with average temperature varying between 33.4°F (0.8°C) and 22.6°F (-5.2°C).

Temperature

With an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 22.6°F (-5.2°C), January is the coldest month.

Humidity

In Newtown, the average relative humidity is 76%.

Rainfall

January and September are months with the least rain in Newtown, Connecticut, when the rain falls for 9.1 days and typically aggregates up to 2.4" (61mm) of rain.

Snowfall

January through May, October through December are months with snowfall. In Newtown, during January, snow falls for 9.2 days and regularly aggregates up to 3.5" (89mm) of snow. In Newtown, Connecticut, during the entire year, snow falls for 34.5 days, and aggregates up to 17.01" (432mm) of snow.

Daylight

The average length of the day in January is 9.6h.

Sunshine

In January, the average sunshine is 5h.

UV index

Months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 2 transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Newtown?

January is the coldest month in Newtown, Connecticut, with an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 22.6°F (-5.2°C).

What is the temperature in January in Newtown?

In January, the average high-temperature is 33.4°F (0.8°C), and the average low-temperature is 22.6°F (-5.2°C).

What is the average humidity in January in Newtown?

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

How much does it rain in Newtown in January?

In Newtown, Connecticut, during January, the rain falls for 9.1 days and regularly aggregates up to 2.4" (61mm) of precipitation.

What is the driest month in Newtown?

January and September are months with the least rain in Newtown, Connecticut, when the rain falls for 9.1 days and typically aggregates up to 2.4" (61mm) of rain.

How much does it snow in Newtown in January?

In Newtown, in January, snow falls for 9.2 days, with typically accumulated 3.5" (89mm) of snow.

How many hours of daylight does Newtown have in January?

In Newtown, Connecticut, the average length of the day in January is 9.6h.

How many hours of sunshine does Newtown have in January?

The average sunshine in January in Newtown, Connecticut, is 5h.

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

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

How high is the UV index in January in Newtown?

In Newtown, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV radiation.

Average temperature in January
Newtown, CT

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

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in January: 22.6°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

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Average pressure in January
Newtown, CT

Average pressure in January - Newtown, CT
  • Average pressure in January: 30.04"

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in January
Newtown, CT

Average wind speed in January - Newtown, CT
  • Average wind speed in January: 8.5mph

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in January
Newtown, CT

Average humidity in January - Newtown, 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 (72%).

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Average rainfall in January
Newtown, CT

Average rainfall in January - Newtown, CT
  • Average rainfall in January: 2.4"

The wettest month (with the highest rainfall) is December (4.02").
The driest months (with the least rainfall) are January and September (2.4").

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Average rainfall days in January
Newtown, CT

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

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is January (9.1 days).

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Average snowfall in January
Newtown, CT

Average snowfall in January - Newtown, CT
  • Average snowfall in January: 3.5"

The month with the highest snowfall is February (4.37").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Newtown, CT

Average snowfall days in January - Newtown, CT
  • Average snowfall days in January: 9.2 days

The month with the highest number of snowfall days is February (9.5 days).
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
Newtown, CT

Average daylight in January / Average sunshine in January - Newtown, CT
  • Average daylight in January: 9.6h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in January: 5h

Months with the most sunshine are July and August (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 4.6h).

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Average sunshine days in January
Newtown, CT

Average sunshine days in January - Newtown, CT
  • Average sunshine days in January: 16.3 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.1 days).

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Average UV index in January
Newtown, CT

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

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in January
Newtown, CT

Average cloud cover in January - Newtown, CT
  • Average cloud cover in January: 46

Months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in January
Newtown, CT

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

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

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