January weather forecast
South Sterling, PA

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Weather in January

January, like December, is a freezing cold winter month in South Sterling, Pennsylvania, with an average temperature fluctuating between 29.8°F (-1.2°C) and 18°F (-7.8°C).

Temperature

January, with its average high-temperature of 29.8°F (-1.2°C) and an average low-temperature of 18°F (-7.8°C), holds the record as the coldest month.

Humidity

In January, the average relative humidity is 82%.

Rainfall

In January, in South Sterling, the rain falls for 7.1 days. Throughout January, 2.32" (59mm) of precipitation is accumulated. Throughout the year, in South Sterling, there are 154.8 rainfall days, and 32.24" (819mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in South Sterling. In South Sterling, in January, during 13.3 snowfall days, 7.95" (202mm) of snow is typically accumulated. Throughout the year, in South Sterling, there are 62.1 snowfall days, and 38.86" (987mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 36min.
On the first day of January in South Sterling, sunrise is at 7:26 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:15 pm EST.

Sunshine

In South Sterling, the average sunshine in January is 3.9h.

UV index

In South Sterling, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 2 in January transforms into the following instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What part of the year is the coldest in South Sterling?

With its average high temperature of 29.8°F (-1.2°C) and a low of 18°F (-7.8°C), January is regarded as the coldest month in South Sterling.

How cold is January in South Sterling?

The average high-temperature, in January, in South Sterling, is 29.8°F (-1.2°C), while the average low-temperature is 18°F (-7.8°C).

What is the average humidity in January in South Sterling?

In January, the average relative humidity is 82%.

How many days does it rain in January in South Sterling?

In South Sterling, in January, during 7.1 rainfall days, 2.32" (59mm) of precipitation is typically accumulated.

How much does it snow in South Sterling in January?

In South Sterling, in January, during 13.3 snowfall days, 7.95" (202mm) of snow is typically accumulated.

What is the average length of the day in January in South Sterling?

The average day length in January in South Sterling, Pennsylvania, is 9h and 36min.

When is the sunrise / sunset in January in South Sterling?

In January, on the first day of the month, sunrise is at 7:26 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:15 pm EST.

How many hours of sunshine does South Sterling have in January?

In January, the average sunshine duration is 3.9h.

What is the UV index intensity in January in South Sterling?

In January, the average daily maximum UV index in South Sterling, Pennsylvania, is 2. A UV Index of 2, and less, symbolizes a low health threat 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
South Sterling, PA

Average temperature in January - South Sterling, PA
  • Average high temperature in January: 29.8°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in January: 18°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18°F).

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Average pressure in January
South Sterling, PA

Average pressure in January - South Sterling, PA
  • Average pressure in January: 30.08"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in January
South Sterling, PA

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

The windiest months (with the highest average wind speed) are January and February (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in January
South Sterling, PA

Average humidity in January - South Sterling, PA
  • Average humidity in January: 82%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is July (77%).

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Average rainfall in January
South Sterling, PA

Average rainfall in January - South Sterling, PA
  • Average rainfall in January: 2.32"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in January
South Sterling, PA

Average rainfall days in January - South Sterling, PA
  • Average rainfall days in January: 7.1 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in January
South Sterling, PA

Average snowfall in January - South Sterling, PA
  • Average snowfall in January: 7.95"

The month with the highest snowfall is February (8.03").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
South Sterling, PA

Average snowfall days in January - South Sterling, PA
  • Average snowfall days in January: 13.3 days

The month with the highest number of snowfall days is January (13.3 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
South Sterling, PA

Average daylight in January / Average sunshine in January - South Sterling, 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 18min).

  • Average sunshine in January: 3h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

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Average sunshine days in January
South Sterling, PA

Average sunshine days in January - South Sterling, PA
  • Average sunshine days in January: 14.8 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (10.9 days).

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Average UV index in January
South Sterling, PA

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

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

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Average cloud cover in January
South Sterling, PA

Average cloud cover in January - South Sterling, PA
  • Average cloud cover in January: 59

The months with the most cloud cover are February and December (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 37).

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Average visibility in January
South Sterling, PA

Average visibility in January - South Sterling, 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).

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South Sterling, Pennsylvania, USA

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