January weather - Winter 2024

Weather in January
Frequently asked questions
Average temperature in January
Average pressure in January
Average wind speed in January
Average humidity in January
Average rainfall in January
Average rainfall days in January
Average snowfall in January
Average snowfall days in January
Average daylight in January
Average sunshine in January
Average sunshine days in January
Average UV index in January
Average cloud cover in January
Average visibility in January

A cool summer day over the colorful cityscape of West Chester, Pennsylvania

Weather in January

Transitioning from the last month of the year, January in West Chester, Pennsylvania ushers in the new calendar year with characteristically cold and frosty weather. The high chance of snowiest conditions, with an average accumulation of 1.34" (34mm), instills a sense of winter magic, leaving the landscape wonderfully blanketed in white. January’s weather in this region tends to be relatively consistent, marked by shorter days and longer nights. Layers are all-important to stay warm in the demure daylight hours and the chilly evenings. The month brings an icy beauty to the city, painting it in hues of snowy white and frosty blues.

Temperature

West Chester's January weather, with an average high temperature of 36.5°F (2.5°C) and an average low temperature of 24.4°F (-4.2°C), tends to be the coldest of the year.

Humidity

The average relative humidity in January in West Chester is 76%.

Rainfall

The month with the least rainfall is January, when the rain falls for 5.7 days and typically collects 0.83" (21mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall in West Chester. In West Chester, Pennsylvania, in January, snow falls for 5.5 days, with typically accumulated 1.34" (34mm) of snow. Throughout the year, in West Chester, there are 18.1 snowfall days, and 5.43" (138mm) of snow is accumulated.

Daylight

In January, the average length of the day in West Chester is 9h and 43min.
On the first day of the month, sunrise is at 7:24 am and sunset at 4:47 pm. On the last day of January, sunrise is at 7:11 am and sunset at 5:19 pm EST.

Sunshine

In West Chester, 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 West Chester, Pennsylvania. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index, 2 during January, leads to the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.

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Frequently asked questions

What are the coldest months in West Chester?

The coldest month is January, with an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 24.4°F (-4.2°C).

How cold is it in West Chester in January?

In West Chester, in January, the average high-temperature is 36.5°F (2.5°C), and the average low-temperature is 24.4°F (-4.2°C).

What is the average humidity in January in West Chester?

In West Chester, the average relative humidity in January is 76%.

What is the driest month in West Chester?

The month with the least rainfall is January, when the rain falls for 5.7 days and typically collects 0.83" (21mm) of precipitation.

How many days does it rain in January in West Chester?

In West Chester, Pennsylvania, during January, the rain falls for 5.7 days and regularly aggregates up to 0.83" (21mm) of precipitation.

How many days does it snow in January in West Chester?

In January, in West Chester, it is snowing for 5.5 days. Throughout January, 1.34" (34mm) of snow is accumulated.

How many hours of daylight does West Chester have in January?

The average day length in January in West Chester is 9h and 43min.

When are sunrise and sunset in January in West Chester?

In January, on the first day of the month, sunrise is at 7:24 am and sunset at 4:47 pm. On the last day of the month, in West Chester, sunrise is at 7:11 am and sunset at 5:19 pm EST.

How many hours of sunshine does West Chester have in January?

In January, the average sunshine duration in West Chester is 4.8h.

What are the months with the lowest UV index in West Chester?

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

What is the UV index reading in January in West Chester?

In West Chester, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

42.8°F 6°C

36.5°F 2.5°C

39.9°F 4.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.7mph 14km/h

9.1mph 14.6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

20.5

16.7

Average UV index

Average cloud cover

Average visibility

Average temperature in January
West Chester, PA

Average high temperature in January: 36.5°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (36.5°F).

Average low temperature in January: 24.4°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).

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Average pressure in January
West Chester, 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).

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Average wind speed in January
West Chester, PA

Average wind speed in January: 8.5mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in January
West Chester, PA

Average humidity in January: 76%

The months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in January
West Chester, PA

Average rainfall in January: 0.83"

The wettest month (with the highest rainfall) is August (2.01").
The driest month (with the least rainfall) is January (0.83").

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Average rainfall days in January
West Chester, PA

Average rainfall days in January: 5.7 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is January (5.7 days).

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Average snowfall in January
West Chester, PA

Average snowfall in January: 1.34"

The month with the highest snowfall is March (1.54").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
West Chester, PA

Average snowfall days in January: 5.5 days

The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in January /
Average sunshine in January
West Chester, 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 36min).

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Average sunshine days in January
West Chester, PA

Average sunshine days in January: 20.5 days

The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is August (13.1 days).

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Average UV index in January
West Chester, 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).

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Average cloud cover in January
West Chester, PA

Average cloud cover in January: 47

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

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Average visibility in January
West Chester, 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).

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January weather forecast
West Chester, PA

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