January weather forecast
Reading, PA

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This beautiful and colorful pagoda located up on Mt. Penn is a beautiful spot to enjoy sweeping views of the scenic Reading City below, in Pennsylvania
This beautiful and colorful pagoda located up on Mt. Penn is a beautiful spot to enjoy sweeping views of the scenic Reading City below, in Pennsylvania

Weather in January

This January, residents of Reading, Pennsylvania prepare for colder temperatures and the potential for wintry precipitation. Fresh snowfall of 2.8in is possible, alongside high total precipitation, indicating a notable likelihood for both rain and snow events. As we shift from the end of one year to the start of another, the temperatures drop dramatically, making January a frigid month. A warm coat is essential to staying comfortable this month, with rain and snow boots a good idea given the high chance of precipitation. Ice scraper and tire chains should be kept close at hand for any unexpected frost or snowfall.

Temperature

Reading's temperature records reveal January as the coldest month, marked by average highs of 35.1°F (1.7°C) and lows of 22.3°F (-5.4°C).

Humidity

The average relative humidity in January is 78%.

Rainfall

In January, the rain falls for 7.9 days. Throughout January, 2.17" (55mm) of precipitation is accumulated. Throughout the year, there are 155.7 rainfall days, and 30.83" (783mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Reading, in January, during 6.4 snowfall days, 2.8" (71mm) of snow is typically accumulated. Throughout the year, there are 21.1 snowfall days, and 12.28" (312mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 41min.
On the first day of the month, sunrise is at 7:26 am and sunset at 4:47 pm. On the last day of January, sunrise is at 7:13 am and sunset at 5:20 pm EST.

Sunshine

The average sunshine in January is 4.7h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 2 in January interprets into the following advice:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Boost your sun resistance with garments that are densely woven yet spacious. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.

Frequently asked questions

What month is the coldest?

In Reading, January is the month with the lowest recorded average temperatures, measuring a high of 35.1°F (1.7°C) and a low of 22.3°F (-5.4°C).

How cold is it in January?

Reading in January has an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 22.3°F (-5.4°C).

What is the average humidity in January?

In January, the average relative humidity is 78%.

How many days does it rain in January?

In Reading, in January, it is raining for 7.9 days, with typically 2.17" (55mm) of accumulated precipitation.

How many days does it snow in January?

In January, it is snowing for 6.4 days. Throughout January, 2.8" (71mm) of snow is accumulated.

How many hours of daylight does Reading have in January?

In January, the average day length is 9h and 41min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:26 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:20 pm EST.

How long on average sun shines in January?

The average sunshine duration in January is 4.7h.

What are the months with the lowest UV index in Reading?

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

How high is the UV index in January?

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe 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
Reading, PA

Average temperature in January - Reading, PA
  • Average high temperature in January: 35.1°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in January: 22.3°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

Average pressure in January
Reading, PA

Average pressure in January - Reading, PA
  • Average pressure in January: 30.09"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in January
Reading, PA

Average wind speed in January - Reading, PA
  • Average wind speed in January: 8.3mph

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

Average humidity in January
Reading, PA

Average humidity in January - Reading, PA
  • Average humidity in January: 78%

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

Average rainfall in January
Reading, PA

Average rainfall in January - Reading, PA
  • Average rainfall in January: 2.17"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is February (2.05").

Average rainfall days in January
Reading, PA

Average rainfall days in January - Reading, PA
  • Average rainfall days in January: 7.9 days

The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is January (7.9 days).

Average snowfall in January
Reading, PA

Average snowfall in January - Reading, PA
  • Average snowfall in January: 2.8"

The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Reading, PA

Average snowfall days in January - Reading, PA
  • Average snowfall days in January: 6.4 days

The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Reading, 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: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in January
Reading, PA

Average sunshine days in January - Reading, PA
  • Average sunshine days in January: 18.3 days

The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in January
Reading, PA

Average UV index in January - Reading, PA
  • Average UV index in January: 2

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

Average cloud cover in January
Reading, PA

Average cloud cover in January - Reading, PA
  • Average cloud cover in January: 48

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in January
Reading, PA

Average visibility in January - Reading, PA
  • Average visibility in January: 6mi

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

Reading, Pennsylvania, USA

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