January weather forecast
Seymour, CT

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Weather in January

January, the same as December, is an icy winter month in Seymour, Connecticut, with an average temperature ranging between min 23.2°F (-4.9°C) and max 33.8°F (1°C).

Temperature

In Seymour, the month of January is known for its lowest average temperatures, reaching a high of 33.8°F (1°C) and a low of 23.2°F (-4.9°C).

Humidity

The average relative humidity in January is 75%.

Rainfall

The months with the least rainfall are January and February Rain falls for 5.3 days and accumulates 0.47" (12mm) of rain.

Snowfall

Months with snowfall in Seymour are January through March, November and December. In Seymour, Connecticut, in January, snow falls for 5.2 days, with typically accumulated 0.35" (9mm) of snow. In Seymour, Connecticut, during the entire year, snow falls for 18.8 days and aggregates up to 2.05" (52mm) of snow.

Daylight

In January, the average length of the day is 9h and 35min.
On the first day of January, sunrise is at 7:18 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 5:06 pm EST.

Sunshine

In January, the average sunshine in Seymour is 5.1h.

UV index

The months with the lowest UV index in Seymour are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In January, the average maximum UV index of 2 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. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

What is the coldest time of year in Seymour?

Seymour notes the coldest temperatures in January, with a average high of 33.8°F (1°C) and a low of 23.2°F (-4.9°C).

How cold is January in Seymour?

During January, Seymour experiences an average high-temperature of 33.8°F (1°C) and a low-temperature of 23.2°F (-4.9°C).

What is the average humidity in January in Seymour?

The average relative humidity in January in Seymour is 75%.

What is the driest month in Seymour?

The months with the least rainfall are January and February Rain falls for 5.3 days and accumulates 0.47" (12mm) of rain.

How many days does it rain in January in Seymour?

In Seymour, in January, during 5.3 rainfall days, 0.47" (12mm) of precipitation is typically accumulated.

How many days does it snow in January in Seymour?

In Seymour, in January, snow falls for 5.2 days, with typically accumulated 0.35" (9mm) of snow.

How many hours of daylight does Seymour have in January?

In Seymour, the average day length in January is 9h and 35min.

What time are sunrise and sunset in January in Seymour?

In January, on the first day of the month, sunrise is at 7:18 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 5:06 pm EST.

How long on average sun shines in January in Seymour?

The average sunshine duration in January is 5.1h.

When is the lowest UV index in Seymour?

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

How high is the UV index in January in Seymour?

In Seymour, Connecticut, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Seymour, CT

Average temperature in January - Seymour, CT
  • Average high temperature in January: 33.8°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in January: 23.2°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

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Average pressure in January
Seymour, CT

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

Average wind speed in January - Seymour, CT
  • Average wind speed in January: 8.9mph

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in January
Seymour, CT

Average humidity in January - Seymour, CT
  • Average humidity in January: 75%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in January
Seymour, CT

Average rainfall in January - Seymour, CT
  • Average rainfall in January: 0.47"

The wettest month (with the highest rainfall) is July (1.22").
The driest months (with the least rainfall) are January and February (0.47").

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Average rainfall days in January
Seymour, CT

Average rainfall days in January - Seymour, CT
  • Average rainfall days in January: 5.3 days

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is January (5.3 days).

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Average snowfall in January
Seymour, CT

Average snowfall in January - Seymour, CT
  • Average snowfall in January: 0.35"

The month with the highest snowfall is December (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in January
Seymour, CT

Average snowfall days in January - Seymour, CT
  • Average snowfall days in January: 5.2 days

The month with the highest number of snowfall days is February (5.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in January / Average sunshine in January - Seymour, 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 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 42min).

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Average sunshine days in January
Seymour, CT

Average sunshine days in January - Seymour, CT
  • Average sunshine days in January: 22.6 days

The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is July (13.9 days).

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Average UV index in January
Seymour, CT

Average UV index in January - Seymour, 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).

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Average cloud cover in January
Seymour, CT

Average cloud cover in January - Seymour, 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 31).

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Average visibility in January
Seymour, CT

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

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

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Seymour, Connecticut, USA

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