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 onset brings a slight change in high-temperatures, falling from a frosty 46°F (7.8°C) in November to a cold 36.3°F (2.4°C). Greeley's temperature drops to an average low of 25.2°F (-3.8°C) during the nights of December.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 84%.Rainfall
In Greeley, in December, it is raining for 9.1 days, with typically 1.97" (50mm) of accumulated precipitation. Throughout the year, there are 142.7 rainfall days, and 24.8" (630mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. 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
With an average of 9h and 12min of daylight, December has the shortest days of the year in Greeley.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 is 4h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, an average UV index of 1 transforms into the following instructions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. To guard against the harmful effects of the Sun, minimize exposure during midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
What is the snowiest month?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Greeley have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Greeley have in December?
When is the lowest UV index?
What is the UV index reading in December?
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
Weather forecast for your location
2. Allow the app to use your location