January weather forecast
Coatesville, PA

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Weather in January

Facing the typical harshness of winter, Coatesville, Pennsylvania observes a cooler climate in January. A blanket of white is common, with 1.65" (42mm) of snowfall recorded. Compared to February, the weather conditions are slightly colder due to lower temperature ranges. Simultaneously, sunlight is limited, which augments the chilly atmosphere throughout the city. Wind speed averages at 8.8mph (14.2km/h), intensifying the wintry ambiance.

Temperature

With an average high-temperature of 35.6°F (2°C) and an average low-temperature of 23.4°F (-4.8°C), January is the coldest month.

Humidity

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

Rainfall

In Coatesville, in January, it is raining for 6.4 days, with typically 1.26" (32mm) of accumulated precipitation. Throughout the year, in Coatesville, Pennsylvania, there are 138.3 rainfall days, and 19.76" (502mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Coatesville, in January, snow falls for 5.8 days, with typically accumulated 1.65" (42mm) of snow. In Coatesville, during the entire year, snow falls for 19.6 days and aggregates up to 7.64" (194mm) of snow.

Daylight

In January, the average length of the day in Coatesville is 9h and 43min.
On the first day of the month, sunrise is at 7:24 am and sunset at 4:48 pm. On the last day of January, sunrise is at 7:12 am and sunset at 5:20 pm EST.

Sunshine

The average sunshine in January in Coatesville is 4.6h.

UV index

The months with the lowest UV index in Coatesville are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In January, a daily maximum UV index of 2 leads to the following instructions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What time of the year is the coldest in Coatesville?

The coldest period in Coatesville tends to be January, when average temperatures fluctuate between a high of 35.6°F (2°C) and a low of 23.4°F (-4.8°C).

How cold is it in Coatesville in January?

The high-temperature, in January, in Coatesville, is 35.6°F (2°C), while the low-temperature averages to 23.4°F (-4.8°C).

What is the average humidity in January in Coatesville?

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

How much does it rain in Coatesville in January?

In Coatesville, in January, it is raining for 6.4 days, with typically 1.26" (32mm) of accumulated precipitation.

How much does it snow in Coatesville in January?

In Coatesville, in January, during 5.8 snowfall days, 1.65" (42mm) of snow is typically accumulated.

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

In Coatesville, the average day length in January is 9h and 43min.

What time are sunrise and sunset in January in Coatesville?

On the first day of January, sunrise is at 7:24 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:20 pm EST.

How long on average sun shines in January in Coatesville?

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

When is the lowest UV index in Coatesville?

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

What is the UV index reading in January in Coatesville?

In January, the average daily maximum UV index in Coatesville is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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
Coatesville, PA

Average temperature in January - Coatesville, PA
  • Average high temperature in January: 35.6°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in January: 23.4°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

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Average pressure in January
Coatesville, PA

Average pressure in January - Coatesville, 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
Coatesville, PA

Average wind speed in January - Coatesville, PA
  • Average wind speed in January: 8.8mph

The windiest months (with the highest average wind speed) are January, February and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in January
Coatesville, PA

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

The months with the highest relative humidity are May and October (81%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in January
Coatesville, PA

Average rainfall in January - Coatesville, PA
  • Average rainfall in January: 1.26"

The wettest month (with the highest rainfall) is August (2.72").
The driest month (with the least rainfall) is February (1.14").

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Average rainfall days in January
Coatesville, PA

Average rainfall days in January - Coatesville, PA
  • Average rainfall days in January: 6.4 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (6.4 days).

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Average snowfall in January
Coatesville, PA

Average snowfall in January - Coatesville, PA
  • Average snowfall in January: 1.65"

The month with the highest snowfall is March (2.32").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Coatesville, PA

Average snowfall days in January - Coatesville, 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 June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Coatesville, PA

Average daylight in January / Average sunshine in January - Coatesville, 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 30min).

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Average sunshine days in January
Coatesville, PA

Average sunshine days in January - Coatesville, PA
  • Average sunshine days in January: 18.8 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (12.4 days).

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Average UV index in January
Coatesville, PA

Average UV index in January - Coatesville, 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
Coatesville, PA

Average cloud cover in January - Coatesville, PA
  • Average cloud cover in January: 48

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in January
Coatesville, PA

Average visibility in January - Coatesville, 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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Coatesville, Pennsylvania, USA

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