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 sea temperature 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
December's onset brings a slight change in high-temperatures, falling from a chilly 45.9°F (7.7°C) in November to a wintry 36.9°F (2.7°C). A slight dip in temperature to a subzero cold 30.4°F (-0.9°C) marks the average nights during December.Humidity
In Erie, the average relative humidity in December is 83%.Rainfall
In Erie, in December, during 4.5 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, there are 95.5 rainfall days, and 7.17" (182mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In December, it is snowing for 6.6 days. Throughout December, 0.31" (8mm) of snow is accumulated. In Erie, during the entire year, snow falls for 28.4 days and aggregates up to 1.85" (47mm) of snow.Ocean temperature
In Erie, the average seawater temperature in December is 41.9°F (5.5°C).Note: Swimming in 41.9°F (5.5°C) feels unbearing at 55.4°F (13°C) and can be life-risking below 50°F (10°C), causing breathing issues and cold shock, depending on a person's capacity.
Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Erie.On the first day of the month, sunrise is at 7:29 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:48 am and sunset at 4:58 pm EST.
Sunshine
In December, the average sunshine is 2.7h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 1 transforms into these recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December in Erie?
How many days does it snow in December?
What is the ocean temperature in December in Erie?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Erie have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Erie, PA
- Average high temperature in December: 36.9°F
The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Erie, PA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Erie, PA
- Average wind speed in December: 13.2mph
The windiest month (with the highest average wind speed) is January (13.5mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in December
Erie, PA
- Average humidity in December: 83%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are August, September, October and November (78%).
Average rainfall in December
Erie, PA
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is October (0.83").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in December
Erie, PA
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is August (11.7 days).
The month with the least rainy days is January (4 days).
Average snowfall in December
Erie, PA
- Average snowfall in December: 0.31"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Erie, PA
- Average snowfall days in December: 6.6 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in December
Erie, PA
- Average sea temperature in December: 41.9°F
The best month for swimming (with the highest average sea temperature) is August (75.1°F).
The coldest month (with the lowest average sea temperature) is February (32.5°F).
Average daylight in December /
Average sunshine in December
Erie, PA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 2h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in December
Erie, PA
- Average sunshine days in December: 20 days
The month with the most sunshine days is March (21.3 days).
The month with the least sunshine days is August (16.3 days).
Average UV index in December
Erie, PA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Erie, PA
- Average cloud cover in December: 72
The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in December
Erie, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Erie, Pennsylvania, USA
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