December weather forecast
Evanstown, PA

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Weather in December

December, the first month of the winter in Evanstown, is also an icy month, with an average temperature fluctuating between 28.4°F (-2°C) and 39.9°F (4.4°C).

Temperature

Transition into December marks a drop in the average high-temperature, moving from a chilly 49.5°F (9.7°C) in November to an icy 39.9°F (4.4°C). Throughout December, Evanstown witnesses a nighttime temperature average of 28.4°F (-2°C).

Humidity

In Evanstown, the average relative humidity in December is 84%.

Rainfall

In December, the rain falls for 12.7 days. Throughout December, 1.97" (50mm) of precipitation is accumulated. In Evanstown, during the entire year, the rain falls for 174.1 days and collects up to 23.82" (605mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Evanstown, during December, snow falls for 11.5 days and regularly aggregates up to 2.91" (74mm) of snow. Throughout the year, there are 54.8 snowfall days, and 13.58" (345mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:22 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:02 pm EST.

Sunshine

The average sunshine in December in Evanstown, Pennsylvania, is 3.6h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.

Frequently asked questions

How cold does it get in December?

During December, Evanstown experiences an average high-temperature of 39.9°F (4.4°C) and a low-temperature of 28.4°F (-2°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, in August is computed to be 86°F (30°C).

What is the average humidity in December?

In December, the average relative humidity is 84%.

How many days does it rain in December?

In Evanstown, during December, the rain falls for 12.7 days and regularly aggregates up to 1.97" (50mm) of precipitation.

How much does it snow in December?

In Evanstown, in December, during 11.5 snowfall days, 2.91" (74mm) of snow is typically accumulated.

What is the month with the shortest days?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

How many hours of daylight does Evanstown have in December?

The average day length in December is 9h and 22min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:22 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:02 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 3.6h.

What is the month with the lowest UV index?

The month with the lowest UV index is December, with an average maximum UV index of 1.

How high is the UV index in December?

The average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a low health risk 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 December
Evanstown, PA

Average temperature in December - Evanstown, PA
  • Average high temperature in December: 39.9°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in December: 28.4°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

Average pressure in December
Evanstown, PA

Average pressure in December - Evanstown, PA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
Evanstown, PA

Average wind speed in December - Evanstown, PA
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in December
Evanstown, PA

Average humidity in December - Evanstown, PA
  • Average humidity in December: 84%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).

Average rainfall in December
Evanstown, PA

Average rainfall in December - Evanstown, PA
  • Average rainfall in December: 1.97"

The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is November (1.42").

Average rainfall days in December
Evanstown, PA

Average rainfall days in December - Evanstown, PA
  • Average rainfall days in December: 12.7 days

The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is February (10 days).

Average snowfall in December
Evanstown, PA

Average snowfall in December - Evanstown, PA
  • Average snowfall in December: 2.91"

The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Evanstown, PA

Average snowfall days in December - Evanstown, PA
  • Average snowfall days in December: 11.5 days

The month with the highest number of snowfall days is January (16.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Evanstown, PA

Average daylight in December / Average sunshine in December - Evanstown, PA
  • Average daylight in December: 9h and 2min

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 December: 3h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days in December
Evanstown, PA

Average sunshine days in December - Evanstown, PA
  • Average sunshine days in December: 9.5 days

The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is January (7.3 days).

Average UV index in December
Evanstown, PA

Average UV index in December - Evanstown, PA
  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Evanstown, PA

Average cloud cover in December - Evanstown, PA
  • Average cloud cover in December: 64

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in December
Evanstown, PA

Average visibility in December - Evanstown, PA
  • Average visibility in December: 5mi

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

Evanstown, Pennsylvania, USA

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