January weather forecast
Colley, PA

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Weather in January

January, the same as December, in Colley, Pennsylvania, is another subzero cold winter month, with an average temperature varying between 18°F (-7.8°C) and 29.1°F (-1.6°C).

Temperature

Colley experiences its lowest average temperatures in January, reaching a peak of 29.1°F (-1.6°C) and a minimum of 18°F (-7.8°C).

Humidity

In January, the average relative humidity is 82%.

Rainfall

In January, the rain falls for 8.5 days. Throughout January, 1.89" (48mm) of precipitation is accumulated. Throughout the year, in Colley, there are 169.1 rainfall days, and 28.74" (730mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Colley, in January, snow falls for 16.7 days, with typically accumulated 5.75" (146mm) of snow. In Colley, during the entire year, snow falls for 68.3 days and aggregates up to 26.65" (677mm) of snow.

Daylight

The average length of the day in January is 9h and 35min.
On the first day of January, sunrise is at 7:31 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:19 pm EST.

Sunshine

The average sunshine in January is 3.3h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 1 during January leads to these advisories:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

With average high and low temperatures of 29.1°F (-1.6°C) and 18°F (-7.8°C) respectively, January is Colley's coldest month.

How cold is January?

The high-temperature, in January, in Colley, records 29.1°F (-1.6°C), while the low-temperature is 18°F (-7.8°C).

What is the average humidity in January?

In Colley, the average relative humidity in January is 82%.

How many days does it rain in January in Colley?

In Colley, Pennsylvania, during January, the rain falls for 8.5 days and regularly aggregates up to 1.89" (48mm) of precipitation.

How much does it snow in January?

In Colley, during January, snow falls for 16.7 days and regularly aggregates up to 5.75" (146mm) of snow.

What is the average length of the day in January?

The average day length in January is 9h and 35min.

When are sunrise and sunset in January?

On the first day of January, sunrise is at 7:31 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:19 pm EST.

How long on average sun shines in January?

The average sunshine duration in January is 3.3h.

What are the months with the lowest UV index?

The months with the lowest UV index are January and December, with an average maximum UV index of 1.

What is the UV index intensity in January?

In January, the average daily maximum UV index in Colley is 1. A UV Index value of 2, and less, symbolizes a low health threat from 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
Colley, PA

Average temperature in January - Colley, PA
  • Average high temperature in January: 29.1°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in January: 18°F

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure in January
Colley, PA

Average pressure in January - Colley, 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).

Average wind speed in January
Colley, PA

Average wind speed in January - Colley, PA
  • Average wind speed in January: 8.6mph

The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in January
Colley, PA

Average humidity in January - Colley, PA
  • Average humidity in January: 82%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April and July (78%).

Average rainfall in January
Colley, PA

Average rainfall in January - Colley, PA
  • Average rainfall in January: 1.89"

The wettest month (with the highest rainfall) is April (2.83").
The driest month (with the least rainfall) is November (1.85").

Average rainfall days in January
Colley, PA

Average rainfall days in January - Colley, PA
  • Average rainfall days in January: 8.5 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (8.5 days).

Average snowfall in January
Colley, PA

Average snowfall in January - Colley, PA
  • Average snowfall in January: 5.75"

The month with the highest snowfall is February (7.05").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Colley, PA

Average snowfall days in January - Colley, PA
  • Average snowfall days in January: 16.7 days

The month with the highest number of snowfall days is January (16.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Colley, PA

Average daylight in January / Average sunshine in January - Colley, PA
  • 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: 3h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).

Average sunshine days in January
Colley, PA

Average sunshine days in January - Colley, PA
  • Average sunshine days in January: 9.3 days

The month with the most sunshine days is September (14.1 days).
The month with the least sunshine days is February (7.8 days).

Average UV index in January
Colley, PA

Average UV index in January - Colley, PA
  • Average UV index in January: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in January
Colley, PA

Average cloud cover in January - Colley, PA
  • Average cloud cover in January: 67

The months with the most cloud cover are January, February and December (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 39).

Average visibility in January
Colley, PA

Average visibility in January - Colley, PA
  • Average visibility in January: 5mi

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

Colley, Pennsylvania, USA

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