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
With December's onset, the weather shows a temperature decrease, transitioning from a chilly 46.2°F (7.9°C) in November to a wintry 36.5°F (2.5°C). Marsteller's average low-temperature is measured at a subzero cold 26.4°F (-3.1°C) during December.Humidity
The average relative humidity in December in Marsteller is 85%.Rainfall
In Marsteller, Pennsylvania, in December, during 7.2 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In Marsteller, during the entire year, the rain falls for 121.6 days and collects up to 10.75" (273mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Marsteller, Pennsylvania, in December, snow falls for 9.2 days, with typically accumulated 2.01" (51mm) of snow. Throughout the year, there are 49.1 snowfall days, and 10.43" (265mm) of snow is accumulated.Daylight
The month with the shortest days in Marsteller is December, with an average of 9h and 18min of daylight.On the first day of December in Marsteller, sunrise is at 7:20 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 4:58 pm EST.
Sunshine
The average sunshine in December in Marsteller is 3.3h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold is December in Marsteller?
What is the average humidity in December in Marsteller?
How many days does it rain in December in Marsteller?
How many days does it snow in December in Marsteller?
What is the month with the shortest days in Marsteller?
What is the average length of the day in December in Marsteller?
When are sunrise and sunset in December in Marsteller?
How long on average sun shines in December in Marsteller?
What is the month with the lowest UV index in Marsteller?
What is the UV index reading in December in Marsteller?
Average temperature in December
Marsteller, PA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Marsteller, PA
- Average pressure in December: 30.1"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
Marsteller, PA
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Marsteller, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, June, July and August (78%).
Average rainfall in December
Marsteller, PA
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is May (1.26").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days in December
Marsteller, PA
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in December
Marsteller, PA
- Average snowfall in December: 2.01"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Marsteller, PA
- Average snowfall days in December: 9.2 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Marsteller, 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 18min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Marsteller, PA
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Marsteller, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Marsteller, PA
- Average cloud cover in December: 68
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Marsteller, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Marsteller, Pennsylvania, USA
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