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 average high-temperature recedes from November's frosty 47.3°F (8.5°C) to an icy 37.6°F (3.1°C). December nights in Petersburg experience a consistent temperature drop to a freezing cold 27.3°F (-2.6°C).Humidity
In December, the average relative humidity is 83%.Rainfall
In December, the rain falls for 12.6 days. Throughout December, 2.01" (51mm) of precipitation is accumulated. Throughout the year, in Petersburg, there are 166.2 rainfall days, and 23.86" (606mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Petersburg, in December, snow falls for 9.1 days, with typically accumulated 2.64" (67mm) of snow. In Petersburg, Pennsylvania, during the entire year, snow falls for 50 days and aggregates up to 16.77" (426mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:17 am and sunset at 4:45 pm. On the last day of December, in Petersburg, Pennsylvania, sunrise is at 7:35 am and sunset at 4:55 pm EST.
Sunshine
In December, the average sunshine is 3.9h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: An average UV index of 1 in December transforms into this advice:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
Is it cold in Petersburg during December?
What is the average humidity in December in Petersburg?
How many days does it rain in December in Petersburg?
How many days does it snow in December in Petersburg?
What is the month with the shortest days in Petersburg?
What is the average length of the day in December in Petersburg?
When are sunrise and sunset in December in Petersburg?
How many hours of sunshine does Petersburg have in December?
When is the lowest UV index in Petersburg?
What is the UV index intensity in December in Petersburg?
Average temperature in December
Petersburg, PA
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.3°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Petersburg, 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
Petersburg, PA
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Petersburg, PA
- Average humidity in December: 83%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is July (76%).
Average rainfall in December
Petersburg, PA
- Average rainfall in December: 2.01"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in December
Petersburg, PA
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in December
Petersburg, PA
- Average snowfall in December: 2.64"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Petersburg, PA
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (15 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Petersburg, 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Petersburg, PA
- Average sunshine days in December: 13.3 days
The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in December
Petersburg, PA
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Petersburg, PA
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in December
Petersburg, 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).
Petersburg, Pennsylvania, USA
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