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
The onset of December comes with a shift in the average high-temperature, falling from a cool 51.1°F (10.6°C) in November to an icy 41.9°F (5.5°C). An average low-temperature of 30°F (-1.1°C) is noted during the nights in December in Columbia.Humidity
The average relative humidity in December is 79%.Rainfall
In Columbia, in December, it is raining for 9.3 days, with typically 1.14" (29mm) of accumulated precipitation. In Columbia, during the entire year, the rain falls for 130.2 days and collects up to 16.22" (412mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Columbia. In December, in Columbia, it is snowing for 3 days. Throughout December, 0.71" (18mm) of snow is accumulated. Throughout the year, in Columbia, there are 18.9 snowfall days, and 6.1" (155mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:09 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:50 pm EST.
Sunshine
In December, the average sunshine is 4.8h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Columbia. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 translates into these guidelines:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold does it get in Columbia in December?
What is the average humidity in December in Columbia?
How many days does it rain in December in Columbia?
How much does it snow in Columbia in December?
What is the month with the shortest days in Columbia?
What is the average length of the day in December in Columbia?
What time are sunrise and sunset in December in Columbia?
How many hours of sunshine does Columbia have in December?
What are the months with the lowest UV index in Columbia?
What is the UV index reading in December in Columbia?
Average temperature in December
Columbia, PA
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in December: 30°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 (22.8°F).
Average pressure in December
Columbia, 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 (29.94"Hg).
Average wind speed in December
Columbia, PA
- Average wind speed in December: 8.3mph
The windiest months (with the highest average wind speed) are February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Columbia, PA
- Average humidity in December: 79%
The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are March and April (76%).
Average rainfall in December
Columbia, PA
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is August (1.89").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in December
Columbia, PA
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in December
Columbia, PA
- Average snowfall in December: 0.71"
The month with the highest snowfall is January (1.89").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Columbia, PA
- Average snowfall days in December: 3 days
The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Columbia, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Columbia, PA
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is May (13.2 days).
Average UV index in December
Columbia, PA
- Average UV index in December: 2
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Columbia, 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 32).
Average visibility in December
Columbia, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, October, November and December (6mi).
The months with the lowest visibility are May, August and September (5mi).
Columbia, Pennsylvania, USA
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