January weather forecast
Plainfield, PA

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Weather in January

January, the same as December, is an icy winter month in Plainfield, Pennsylvania, with an average temperature varying between 21.9°F (-5.6°C) and 34.7°F (1.5°C).

Temperature

January, characterized by an average high temperature of 34.7°F (1.5°C) and a low temperature of 21.9°F (-5.6°C), is generally the coldest month.

Humidity

In Plainfield, Pennsylvania, the average relative humidity in January is 77%.

Rainfall

In Plainfield, in January, it is raining for 7.9 days, with typically 2.01" (51mm) of accumulated precipitation. In Plainfield, during the entire year, the rain falls for 158 days and collects up to 28.03" (712mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Plainfield, Pennsylvania. January is the month with the most snowfall. Snow falls for 8.7 days and accumulates 4.53" (115mm) of snow.

Daylight

In January, the average length of the day in Plainfield is 9h and 42min.
On the first day of January in Plainfield, sunrise is at 7:31 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:26 pm EST.

Sunshine

In January, the average sunshine in Plainfield 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 in Plainfield. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In January, the maximum UV index of 2 translates into these guidelines:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

What time of the year is the coldest in Plainfield?

January, with its average high-temperature of 34.7°F (1.5°C) and an average low-temperature of 21.9°F (-5.6°C), holds the record as the coldest month in Plainfield, Pennsylvania.

How cold is January in Plainfield?

January temperatures in Plainfield, Pennsylvania, vary between a high-temperature of 34.7°F (1.5°C) and a low-temperature of 21.9°F (-5.6°C).

What is the average humidity in January in Plainfield?

The average relative humidity in January in Plainfield, Pennsylvania, is 77%.

How much does it rain in Plainfield in January?

In Plainfield, Pennsylvania, during January, the rain falls for 7.9 days and regularly aggregates up to 2.01" (51mm) of precipitation.

What is the snowiest month in Plainfield?

The month with the most snowfall is January, when snow falls for 8.7 days and typically aggregates up to 4.53" (115mm) of snow.

How many days does it snow in January in Plainfield?

In Plainfield, Pennsylvania, in January, during 8.7 snowfall days, 4.53" (115mm) of snow is typically accumulated.

What is the average length of the day in January in Plainfield?

In January, the average day length in Plainfield, Pennsylvania, is 9h and 42min.

When is the sunrise / sunset in January in Plainfield?

In January, on the first day of the month, sunrise is at 7:31 am and sunset at 4:53 pm. On the last day of the month, in Plainfield, Pennsylvania, sunrise is at 7:19 am and sunset at 5:26 pm EST.

How long on average sun shines in January in Plainfield?

In January, the average sunshine duration is 4.6h.

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

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

How high is the UV index in January in Plainfield?

In January, the average daily maximum UV index in Plainfield is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's 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
Plainfield, PA

Average temperature in January - Plainfield, PA
  • Average high temperature in January: 34.7°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.7°F).

  • Average low temperature in January: 21.9°F

The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).

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Average pressure in January
Plainfield, PA

Average pressure in January - Plainfield, PA
  • Average pressure in January: 30.1"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).

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Average wind speed in January
Plainfield, PA

Average wind speed in January - Plainfield, PA
  • Average wind speed in January: 7.9mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

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Average humidity in January
Plainfield, PA

Average humidity in January - Plainfield, PA
  • Average humidity in January: 77%

The months with the highest relative humidity are February, May and October (80%).
The months with the lowest relative humidity are April and July (76%).

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Average rainfall in January
Plainfield, PA

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

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in January
Plainfield, PA

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

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in January
Plainfield, PA

Average snowfall in January - Plainfield, PA
  • Average snowfall in January: 4.53"

The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Plainfield, PA

Average snowfall days in January - Plainfield, PA
  • Average snowfall days in January: 8.7 days

The month with the highest number of snowfall days is January (8.7 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
Plainfield, PA

Average daylight in January / Average sunshine in January - Plainfield, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

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Average sunshine days in January
Plainfield, PA

Average sunshine days in January - Plainfield, PA
  • Average sunshine days in January: 16.8 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (11 days).

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Average UV index in January
Plainfield, PA

Average UV index in January - Plainfield, 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).

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Average cloud cover in January
Plainfield, PA

Average cloud cover in January - Plainfield, PA
  • Average cloud cover in January: 51

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in January
Plainfield, PA

Average visibility in January - Plainfield, PA
  • Average visibility in January: 5mi

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

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Plainfield, Pennsylvania, USA

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