January weather forecast
Mill Run, PA

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Weather in January

January, like December, in Mill Run, Pennsylvania, is an icy winter month, with an average temperature ranging between min 20.5°F (-6.4°C) and max 34°F (1.1°C).

Temperature

Mill Run experiences its lowest temperatures in January, with an average peak of 34°F (1.1°C) and a low of 20.5°F (-6.4°C).

Humidity

January and February, with an average relative humidity of 85%, are the most humid months.

Rainfall

In Mill Run, during January, the rain falls for 8.9 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, there are 150.7 rainfall days, and 16.65" (423mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. January is the month with the most snowfall. Snow falls for 15.9 days and accumulates 4.29" (109mm) of snow.

Daylight

In January, the average length of the day is 9h and 43min.
On the first day of the month, sunrise is at 7:39 am and sunset at 5:03 pm. On the last day of January, sunrise is at 7:27 am and sunset at 5:35 pm EST.

Sunshine

With an average of 2.9h of sunshine, January has the least sunshine of the year.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 2 in January converts into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Mill Run?

Mill Run's coldest month, January, generally records average temperatures ranging from a high of 34°F (1.1°C) to a low of 20.5°F (-6.4°C).

How cold is it in January?

The high-temperature during January is 34°F (1.1°C) and the low-temperature is 20.5°F (-6.4°C).

What are the most humid months?

The months with the highest humidity are January and February, with an average relative humidity of 85%.

What is the average humidity in January?

The average relative humidity in January is 85%.

How much does it rain in Mill Run in January?

In Mill Run, Pennsylvania, during January, the rain falls for 8.9 days and regularly aggregates up to 1.42" (36mm) of precipitation.

When does it snow the most?

January is the month with the most snowfall. Snow falls for 15.9 days and accumulates 4.29" (109mm) of snow.

How much does it snow in January?

In Mill Run, during January, snow falls for 15.9 days and regularly aggregates up to 4.29" (109mm) of snow.

What is the average length of the day in January in Mill Run?

The average day length in January is 9h and 43min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:39 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:35 pm EST.

What is the month with the least sunshine?

With an average of 2.9h of sunshine, January has the least sunshine of the year.

How many hours of sunshine does Mill Run have in January?

In Mill Run, the average sunshine duration in January is 2.9h.

What is the month with the lowest UV index in Mill Run?

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.

What is the UV index intensity in January?

The average daily maximum UV index in January is 2. 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
Mill Run, PA

Average temperature in January - Mill Run, PA
  • Average high temperature in January: 34°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in January: 20.5°F

The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in January
Mill Run, PA

Average pressure in January - Mill Run, PA
  • Average pressure in January: 30.11"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in January
Mill Run, PA

Average wind speed in January - Mill Run, PA
  • Average wind speed in January: 8.4mph

The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in January
Mill Run, PA

Average humidity in January - Mill Run, PA
  • Average humidity in January: 85%

The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are July and August (77%).

Average rainfall in January
Mill Run, PA

Average rainfall in January - Mill Run, PA
  • Average rainfall in January: 1.42"

The wettest month (with the highest rainfall) is May (1.97").
The driest months (with the least rainfall) are September and November (0.91").

Average rainfall days in January
Mill Run, PA

Average rainfall days in January - Mill Run, PA
  • Average rainfall days in January: 8.9 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (7.9 days).

Average snowfall in January
Mill Run, PA

Average snowfall in January - Mill Run, PA
  • Average snowfall in January: 4.29"

The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Mill Run, PA

Average snowfall days in January - Mill Run, PA
  • Average snowfall days in January: 15.9 days

The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Mill Run, PA

Average daylight in January / Average sunshine in January - Mill Run, 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 24min).

  • Average sunshine in January: 2h and 5min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

Average sunshine days in January
Mill Run, PA

Average sunshine days in January - Mill Run, PA
  • Average sunshine days in January: 8.6 days

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is January (8.6 days).

Average UV index in January
Mill Run, PA

Average UV index in January - Mill Run, PA
  • Average UV index in January: 2

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

Average cloud cover in January
Mill Run, PA

Average cloud cover in January - Mill Run, PA
  • Average cloud cover in January: 70

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in January
Mill Run, PA

Average visibility in January - Mill Run, PA
  • Average visibility in January: 4mi

The month with the highest visibility is April (6mi).
The month with the lowest visibility is January (4mi).

Mill Run, Pennsylvania, USA

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