January weather forecast
Shartlesville, PA

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Weather in January

January, the same as December, is a wintry winter month in Shartlesville, Pennsylvania, with an average temperature ranging between max 33.6°F (0.9°C) and min 21.6°F (-5.8°C).

Temperature

In Shartlesville, the lowest average temperatures are observed in January, with a high of 33.6°F (0.9°C) and a low of 21.6°F (-5.8°C).

Humidity

The average relative humidity in January is 79%.

Rainfall

In Shartlesville, in January, it is raining for 7.7 days, with typically 2.01" (51mm) of accumulated precipitation. Throughout the year, in Shartlesville, there are 148.7 rainfall days, and 26.42" (671mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Shartlesville. In Shartlesville, in January, snow falls for 8.3 days, with typically accumulated 3.74" (95mm) of snow. Throughout the year, in Shartlesville, there are 26.2 snowfall days, and 13.58" (345mm) of snow is accumulated.

Daylight

The average length of the day in January in Shartlesville, Pennsylvania, is 9h and 40min.
On the first day of the month, sunrise is at 7:27 am and sunset at 4:48 pm. On the last day of January, in Shartlesville, Pennsylvania, sunrise is at 7:14 am and sunset at 5:20 pm EST.

Sunshine

In January, the average sunshine is 4.6h.

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 minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Frequently asked questions

What time of the year is the coldest in Shartlesville?

January is the coldest month, with the temperature often reaching an average high of 33.6°F (0.9°C) and an average low of 21.6°F (-5.8°C).

How cold is it in Shartlesville in January?

An average high-temperature, in January, in Shartlesville, is 33.6°F (0.9°C) and the average low-temperature is 21.6°F (-5.8°C).

What is the average humidity in January in Shartlesville?

The average relative humidity in January in Shartlesville, Pennsylvania, is 79%.

How many days does it rain in January in Shartlesville?

In Shartlesville, Pennsylvania, during January, the rain falls for 7.7 days and regularly aggregates up to 2.01" (51mm) of precipitation.

How much does it snow in Shartlesville in January?

In Shartlesville, Pennsylvania, in January, during 8.3 snowfall days, 3.74" (95mm) of snow is typically accumulated.

How many hours of daylight does Shartlesville have in January?

The average day length in January in Shartlesville is 9h and 40min.

When are sunrise and sunset in January in Shartlesville?

On the first day of January in Shartlesville, sunrise is at 7:27 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:20 pm EST.

How many hours of sunshine does Shartlesville have in January?

In Shartlesville, the average sunshine duration in January is 4.6h.

What is the month with the lowest UV index in Shartlesville?

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

How high is the UV index in January in Shartlesville?

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal hazard to health 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
Shartlesville, PA

Average temperature in January - Shartlesville, PA
  • Average high temperature in January: 33.6°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in January: 21.6°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in January
Shartlesville, PA

Average pressure in January - Shartlesville, 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).

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Average wind speed in January
Shartlesville, PA

Average wind speed in January - Shartlesville, PA
  • Average wind speed in January: 8.1mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in January
Shartlesville, PA

Average humidity in January - Shartlesville, PA
  • Average humidity in January: 79%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in January
Shartlesville, PA

Average rainfall in January - Shartlesville, PA
  • Average rainfall in January: 2.01"

The wettest month (with the highest rainfall) is August (2.87").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in January
Shartlesville, PA

Average rainfall days in January - Shartlesville, PA
  • Average rainfall days in January: 7.7 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (7.7 days).

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Average snowfall in January
Shartlesville, PA

Average snowfall in January - Shartlesville, PA
  • Average snowfall in January: 3.74"

The month with the highest snowfall is March (3.86").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Shartlesville, PA

Average snowfall days in January - Shartlesville, PA
  • Average snowfall days in January: 8.3 days

The month with the highest number of snowfall days is January (8.3 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
Shartlesville, PA

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

  • Average sunshine in January: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

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Average sunshine days in January
Shartlesville, PA

Average sunshine days in January - Shartlesville, PA
  • Average sunshine days in January: 17.3 days

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in January
Shartlesville, PA

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

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

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Average cloud cover in January
Shartlesville, PA

Average cloud cover in January - Shartlesville, PA
  • Average cloud cover in January: 49

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in January
Shartlesville, PA

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

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

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Shartlesville, Pennsylvania, USA

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