January weather forecast
Newtown Square, PA

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Weather in January

January, the same as December, is a wintry winter month in Newtown Square, Pennsylvania, with temperature in the range of an average high of 36.5°F (2.5°C) and an average low of 24.3°F (-4.3°C).

Temperature

In Newtown Square, the lowest average temperatures are observed in January, with a high of 36.5°F (2.5°C) and a low of 24.3°F (-4.3°C).

Humidity

In Newtown Square, the average relative humidity in January is 76%.

Rainfall

January, February and November are months with the least rain when the rain falls for 6.3 days and typically aggregates up to 1.3" (33mm) of rain.

Snowfall

January through May, October through December are months with snowfall. In Newtown Square, in January, snow falls for 6.1 days, with typically accumulated 1.69" (43mm) of snow. In Newtown Square, during the entire year, snow falls for 19.3 days and aggregates up to 7.68" (195mm) of snow.

Daylight

In January, the average length of the day is 9h and 43min.
On the first day of January, sunrise is at 7:23 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:18 pm EST.

Sunshine

In January, the average sunshine in Newtown Square is 4.7h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.
Note: In January, a daily UV index of 2 turns into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Jun 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

Newtown Square's January weather reaches an average high of 36.5°F (2.5°C) and an average low of 24.3°F (-4.3°C), making it the coldest month.

How cold is it in January?

During January, Newtown Square experiences an average high-temperature of 36.5°F (2.5°C) and a low-temperature of 24.3°F (-4.3°C).

What is the average humidity in January?

In Newtown Square, the average relative humidity in January is 76%.

What is the driest month?

January, February and November are months with the least rain when the rain falls for 6.3 days and typically aggregates up to 1.3" (33mm) of rain.

How many days does it rain in January?

In Newtown Square, Pennsylvania, in January, it is raining for 6.3 days, with typically 1.3" (33mm) of accumulated precipitation.

How much does it snow in January?

In Newtown Square, during January, snow falls for 6.1 days and regularly aggregates up to 1.69" (43mm) of snow.

What is the average length of the day in January in Newtown Square?

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

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:23 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:18 pm EST.

How long on average sun shines in January?

In Newtown Square, the average sunshine duration in January is 4.7h.

What is the month with the lowest UV index?

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

How high is the UV index in January?

In Newtown Square, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Newtown Square, PA

Average temperature in January - Newtown Square, PA
  • Average high temperature in January: 36.5°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in January: 24.3°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in January
Newtown Square, PA

Average pressure in January - Newtown Square, 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).

Average wind speed in January
Newtown Square, PA

Average wind speed in January - Newtown Square, PA
  • Average wind speed in January: 8.3mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in January
Newtown Square, PA

Average humidity in January - Newtown Square, PA
  • Average humidity in January: 76%

The months with the highest relative humidity are February and October (79%).
The months with the lowest relative humidity are April, July and August (73%).

Average rainfall in January
Newtown Square, PA

Average rainfall in January - Newtown Square, PA
  • Average rainfall in January: 1.3"

The wettest month (with the highest rainfall) is August (2.72").
The driest months (with the least rainfall) are January, February and November (1.3").

Average rainfall days in January
Newtown Square, PA

Average rainfall days in January - Newtown Square, PA
  • Average rainfall days in January: 6.3 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in January
Newtown Square, PA

Average snowfall in January - Newtown Square, PA
  • Average snowfall in January: 1.69"

The month with the highest snowfall is March (1.93").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Newtown Square, PA

Average snowfall days in January - Newtown Square, PA
  • Average snowfall days in January: 6.1 days

The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Newtown Square, PA

Average daylight in January / Average sunshine in January - Newtown Square, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in January
Newtown Square, PA

Average sunshine days in January - Newtown Square, PA
  • Average sunshine days in January: 19 days

The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is July (12.7 days).

Average UV index in January
Newtown Square, PA

Average UV index in January - Newtown Square, 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).

Average cloud cover in January
Newtown Square, PA

Average cloud cover in January - Newtown Square, PA
  • Average cloud cover in January: 47

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

Average visibility in January
Newtown Square, PA

Average visibility in January - Newtown Square, 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).

Newtown Square, Pennsylvania, USA

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