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
December's arrival corresponds with a decrease in average high-temperatures, from November's frosty 46°F (7.8°C) to an icy 36.3°F (2.4°C). During December, the average low-temperature is a subzero cold 25.2°F (-3.8°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 84%.Rainfall
In Greeley, during December, the rain falls for 9.1 days and regularly aggregates up to 1.97" (50mm) of precipitation. Throughout the year, in Greeley, there are 142.7 rainfall days, and 24.8" (630mm) of precipitation is accumulated.Snowfall
Months with snowfall in Greeley are January through May, October through December. The month with the most snowfall in Greeley is December, when snow falls for 8.3 days and typically aggregates up to 5.35" (136mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:07 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:40 pm EST.
Sunshine
In December, the average sunshine in Greeley is 4h.UV index
The month with the lowest UV index in Greeley is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health 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:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold is it in Greeley in December?
What are the most humid months in Greeley?
What is the average humidity in December in Greeley?
How much does it rain in Greeley in December?
When does it snow the most in Greeley?
How many days does it snow in December in Greeley?
What is the month with the shortest days in Greeley?
How many hours of daylight does Greeley have in December?
When is the sunrise / sunset in December in Greeley?
How long on average sun shines in December in Greeley?
When is the lowest UV index in Greeley?
What is the UV index reading in December in Greeley?
Average temperature in December
Greeley, PA
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 25.2°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 (18.1°F).
Average pressure in December
Greeley, PA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Greeley, PA
- Average wind speed in December: 7.9mph
The windiest months (with the highest average wind speed) are January and February (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Greeley, PA
- Average humidity in December: 84%
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is July (77%).
Average rainfall in December
Greeley, PA
- Average rainfall in December: 1.97"
The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in December
Greeley, PA
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in December
Greeley, PA
- Average snowfall in December: 5.35"
The month with the highest snowfall is December (5.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Greeley, PA
- Average snowfall days in December: 8.3 days
The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Greeley, PA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in December
Greeley, PA
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is September (18 days).
The month with the least sunshine days is April (12.1 days).
Average UV index in December
Greeley, 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
Greeley, PA
- Average cloud cover in December: 60
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Greeley, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Greeley, Pennsylvania, USA
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