Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Newtown Square, Pennsylvania, experiences a temperature shift at the start of December, with average high-temperatures adjusting from a cool 51.8°F (11°C) in November to a wintry 42.6°F (5.9°C). During December, an average low-temperature of 31.1°F (-0.5°C) is observed.Humidity
In December, the average relative humidity is 78%.Rainfall
In Newtown Square, in December, it is raining for 9.1 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, in Newtown Square, Pennsylvania, there are 138.1 rainfall days, and 20.79" (528mm) of precipitation is accumulated.Snowfall
Months with snowfall in Newtown Square are January through May, October through December. In Newtown Square, in December, during 2.5 snowfall days, 1.46" (37mm) of snow is typically accumulated. In Newtown Square, Pennsylvania, during the entire year, snow falls for 19.3 days and aggregates up to 7.68" (195mm) of snow.Daylight
December has the shortest days of the year in Newtown Square, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:46 pm EST.
Sunshine
In Newtown Square, the average sunshine in December 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 Newtown Square. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
How cold does it get in Newtown Square in December?
What is the average humidity in December in Newtown Square?
How much does it rain in Newtown Square in December?
How much does it snow in Newtown Square in December?
What is the month with the shortest days in Newtown Square?
How many hours of daylight does Newtown Square have in December?
What time are sunrise and sunset in December in Newtown Square?
How many hours of sunshine does Newtown Square have in December?
When is the lowest UV index in Newtown Square?
How high is the UV index in December in Newtown Square?
Average temperature in December
Newtown Square, PA
- Average high temperature in December: 42.6°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 December: 31.1°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 December
Newtown Square, PA
- Average pressure in December: 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 December
Newtown Square, PA
- Average wind speed in December: 7.8mph
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 December
Newtown Square, PA
- Average humidity in December: 78%
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 December
Newtown Square, PA
- Average rainfall in December: 1.81"
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 December
Newtown Square, PA
- Average rainfall days in December: 9.1 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 December
Newtown Square, PA
- Average snowfall in December: 1.46"
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 December
Newtown Square, PA
- Average snowfall days in December: 2.5 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 December /
Average sunshine in December
Newtown Square, 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: 4h and 5min
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 December
Newtown Square, PA
- Average sunshine days in December: 19.2 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 December
Newtown Square, PA
- Average UV index in December: 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 December
Newtown Square, PA
- Average cloud cover in December: 49
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 December
Newtown Square, PA
- Average visibility in December: 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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