January weather forecast
Arlington Knolls, PA

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Weather in January

January, like December, in Arlington Knolls, Pennsylvania, is another cold winter month, with an average temperature fluctuating between 33.8°F (1°C) and 21.6°F (-5.8°C).

Temperature

Arlington Knolls, Pennsylvania, witnesses the coldest weather in January, with temperatures averaging a high of 33.8°F (1°C) and a low of 21.6°F (-5.8°C).

Humidity

In Arlington Knolls, the average relative humidity in January is 78%.

Rainfall

In Arlington Knolls, in January, it is raining for 9.9 days, with typically 2.32" (59mm) of accumulated precipitation. Throughout the year, in Arlington Knolls, there are 162.5 rainfall days, and 31.69" (805mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Arlington Knolls are January through May, October through December. In January, in Arlington Knolls, Pennsylvania, it is snowing for 9.2 days. Throughout January, 3.94" (100mm) of snow is accumulated. Throughout the year, in Arlington Knolls, there are 32.3 snowfall days, and 17.24" (438mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 40min.
On the first day of the month, sunrise is at 7:25 am and sunset at 4:45 pm. On the last day of January, sunrise is at 7:12 am and sunset at 5:17 pm EST.

Sunshine

The average sunshine in January in Arlington Knolls, Pennsylvania, is 4.7h.

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 estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, a regular UV index of 2 translates into these guidelines:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Enhance your sun protection with tightly woven, yet airy clothing. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What month is the coldest in Arlington Knolls?

January brings the lowest temperatures in Arlington Knolls, Pennsylvania, with an average high of 33.8°F (1°C) and an average low of 21.6°F (-5.8°C).

How cold is January in Arlington Knolls?

The average high-temperature, in January, in Arlington Knolls, is 33.8°F (1°C), while the average low-temperature is 21.6°F (-5.8°C).

What is the average humidity in January in Arlington Knolls?

In January, the average relative humidity in Arlington Knolls, Pennsylvania, is 78%.

How much does it rain in Arlington Knolls in January?

In January, the rain falls for 9.9 days. Throughout January, 2.32" (59mm) of precipitation is accumulated.

How many days does it snow in January in Arlington Knolls?

In January, in Arlington Knolls, Pennsylvania, it is snowing for 9.2 days. Throughout January, 3.94" (100mm) of snow is accumulated.

How many hours of daylight does Arlington Knolls have in January?

In January, the average day length is 9h and 40min.

When are sunrise and sunset in January in Arlington Knolls?

On the first day of January, sunrise is at 7:25 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:17 pm EST.

How many hours of sunshine does Arlington Knolls have in January?

The average sunshine duration in January is 4.7h.

What are the months with the lowest UV index in Arlington Knolls?

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

What is the UV index intensity in January in Arlington Knolls?

In January, the average daily maximum UV index in Arlington Knolls is 2. A UV Index value of 2, and less, symbolizes a low health risk 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
Arlington Knolls, PA

Average temperature in January - Arlington Knolls, PA
  • Average high temperature in January: 33.8°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in January: 21.6°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in January
Arlington Knolls, PA

Average pressure in January - Arlington Knolls, PA
  • Average pressure in January: 30.08"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in January
Arlington Knolls, PA

Average wind speed in January - Arlington Knolls, PA
  • 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 (5mph).

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Average humidity in January
Arlington Knolls, PA

Average humidity in January - Arlington Knolls, PA
  • Average humidity in January: 78%

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (76%).

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Average rainfall in January
Arlington Knolls, PA

Average rainfall in January - Arlington Knolls, PA
  • Average rainfall in January: 2.32"

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

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Average rainfall days in January
Arlington Knolls, PA

Average rainfall days in January - Arlington Knolls, PA
  • Average rainfall days in January: 9.9 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (9.9 days).

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Average snowfall in January
Arlington Knolls, PA

Average snowfall in January - Arlington Knolls, PA
  • Average snowfall in January: 3.94"

The month with the highest snowfall is March (4.88").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Arlington Knolls, PA

Average snowfall days in January - Arlington Knolls, PA
  • Average snowfall days in January: 9.2 days

The month with the highest number of snowfall days is February (9.7 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
Arlington Knolls, PA

Average daylight in January / Average sunshine in January - Arlington Knolls, PA
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in January: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in January
Arlington Knolls, PA

Average sunshine days in January - Arlington Knolls, PA
  • Average sunshine days in January: 16.3 days

The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is February (11.7 days).

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Average UV index in January
Arlington Knolls, PA

Average UV index in January - Arlington Knolls, PA
  • 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).

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Average cloud cover in January
Arlington Knolls, PA

Average cloud cover in January - Arlington Knolls, PA
  • Average cloud cover in January: 48

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in January
Arlington Knolls, PA

Average visibility in January - Arlington Knolls, PA
  • Average visibility in January: 5mi

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

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Arlington Knolls, Pennsylvania, USA

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