January weather forecast
South Pottstown, PA

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Weather in January

January, like December, in South Pottstown, Pennsylvania, is another cold winter month, with an average temperature ranging between max 35.4°F (1.9°C) and min 23.2°F (-4.9°C).

Temperature

In South Pottstown, January is the coldest month, with temperatures averaging a high of 35.4°F (1.9°C) and a low of 23.2°F (-4.9°C).

Humidity

In South Pottstown, the average relative humidity in January is 77%.

Rainfall

In January, the rain falls for 7.3 days. Throughout January, 1.85" (47mm) of precipitation is accumulated. Throughout the year, there are 146.5 rainfall days, and 27.87" (708mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in South Pottstown. In South Pottstown, in January, during 5.8 snowfall days, 2.64" (67mm) of snow is typically accumulated. Throughout the year, there are 19.1 snowfall days, and 11.54" (293mm) 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 7:25 am and sunset at 4:47 pm. On the last day of January, sunrise is at 7:12 am and sunset at 5:19 pm EST.

Sunshine

In South Pottstown, the average sunshine in January is 4.8h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in South Pottstown. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: An average maximum UV index of 2 in January leads to these recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.

Frequently asked questions

What is the coldest month?

In South Pottstown, January is the coldest month, with temperatures averaging a high of 35.4°F (1.9°C) and a low of 23.2°F (-4.9°C).

How cold is January?

In January, the average high-temperature and low-temperature are 35.4°F (1.9°C) and 23.2°F (-4.9°C) respectively.

What is the average humidity in January?

In South Pottstown, the average relative humidity in January is 77%.

How many days does it rain in January?

In January, the rain falls for 7.3 days. Throughout January, 1.85" (47mm) of precipitation is accumulated.

How much does it snow in January?

In South Pottstown, in January, snow falls for 5.8 days, with typically accumulated 2.64" (67mm) of snow.

What is the average length of the day in January?

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

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:25 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:19 pm EST.

How long on average sun shines in January?

In South Pottstown, the average sunshine duration in January is 4.8h.

What is the month with the lowest UV index?

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

What is the UV index intensity in January?

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents 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
South Pottstown, PA

Average temperature in January - South Pottstown, PA
  • Average high temperature in January: 35.4°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in January: 23.2°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

Average pressure in January
South Pottstown, PA

Average pressure in January - South Pottstown, PA
  • Average pressure in January: 30.09"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
South Pottstown, PA

Average wind speed in January - South Pottstown, PA
  • Average wind speed in January: 8mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in January
South Pottstown, PA

Average humidity in January - South Pottstown, PA
  • Average humidity in January: 77%

The months with the highest relative humidity are February and October (80%).
The months with the lowest relative humidity are April and July (75%).

Average rainfall in January
South Pottstown, PA

Average rainfall in January - South Pottstown, PA
  • Average rainfall in January: 1.85"

The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is September (1.81").

Average rainfall days in January
South Pottstown, PA

Average rainfall days in January - South Pottstown, PA
  • Average rainfall days in January: 7.3 days

The months with the highest number of rainy days are May and July (17 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in January
South Pottstown, PA

Average snowfall in January - South Pottstown, PA
  • Average snowfall in January: 2.64"

The month with the highest snowfall is March (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
South Pottstown, PA

Average snowfall days in January - South Pottstown, PA
  • Average snowfall days in January: 5.8 days

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

Average daylight in January /
Average sunshine in January
South Pottstown, PA

Average daylight in January / Average sunshine in January - South Pottstown, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in January
South Pottstown, PA

Average sunshine days in January - South Pottstown, PA
  • Average sunshine days in January: 18.7 days

The month with the most sunshine days is November (21 days).
The month with the least sunshine days is May (12.3 days).

Average UV index in January
South Pottstown, PA

Average UV index in January - South Pottstown, PA
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (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
South Pottstown, PA

Average cloud cover in January - South Pottstown, PA
  • Average cloud cover in January: 46

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in January
South Pottstown, PA

Average visibility in January - South Pottstown, PA
  • Average visibility in January: 6mi

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

South Pottstown, Pennsylvania, USA

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