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
Arrival of December comes with a reduction in the average high-temperature, falling from a frosty 45.9°F (7.7°C) in November to a cold 36.9°F (2.7°C). Erie's December nights witness minimal differential from the daytime temperatures, with averages of 30.4°F (-0.9°C).Humidity
In December, the average relative humidity in Erie is 83%.Rainfall
In Erie, in December, during 4.5 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Erie, during the entire year, the rain falls for 95.5 days and collects up to 7.17" (182mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Erie, during December, snow falls for 6.6 days and regularly aggregates up to 0.31" (8mm) of snow. In Erie, Pennsylvania, during the entire year, snow falls for 28.4 days and aggregates up to 1.85" (47mm) of snow.Ocean temperature
In Erie, Pennsylvania, the average seawater temperature in December is 41.9°F (5.5°C).Note: You can swim in 41.9°F (5.5°C) below 50°F (10°C) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 55.4°F (13°C) without it is tough.
Daylight
December has the shortest days of the year in Erie, with an average of 9h and 12min of daylight.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, in Erie, Pennsylvania, sunrise is at 7:48 am and sunset at 4:58 pm EST.
Sunshine
In December, the average sunshine in Erie is 2.7h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 1 during December translates into the following guidance:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
How cold is December in Erie?
What is the average humidity in December in Erie?
How much does it rain in Erie in December?
How much does it snow in Erie in December?
What is the water temperature in December in Erie?
What is the month with the shortest days in Erie?
How many hours of daylight does Erie have in December?
What time are sunrise and sunset in December in Erie?
How long on average sun shines in December in Erie?
What are the months with the lowest UV index in Erie?
How high is the UV index in December in Erie?
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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