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
Mount Jewett's progression into December involves a drop in the average high-temperature, receding from a frosty 43.3°F (6.3°C) in November to a cold 34°F (1.1°C). During December, the temperature in Mount Jewett is averaged to a low of 23.9°F (-4.5°C) at night.Humidity
The average relative humidity in December is 88%.Rainfall
In Mount Jewett, in December, during 10 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. In Mount Jewett, during the entire year, the rain falls for 176.7 days and collects up to 34.76" (883mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Mount Jewett, Pennsylvania, in December, snow falls for 20.7 days, with typically accumulated 12.17" (309mm) of snow. Throughout the year, there are 103 snowfall days, and 61.22" (1555mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:22 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:41 am and sunset at 4:54 pm EST.
Sunshine
In Mount Jewett, the average sunshine in December is 2.5h.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 minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: In December, a daily UV index of 1 turns into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Mount Jewett have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Mount Jewett have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Mount Jewett, PA
- Average high temperature in December: 34°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in December
Mount Jewett, PA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Mount Jewett, PA
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Mount Jewett, PA
- Average humidity in December: 88%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are May, June and July (79%).
Average rainfall in December
Mount Jewett, PA
- Average rainfall in December: 3.15"
The wettest month (with the highest rainfall) is April (3.94").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in December
Mount Jewett, PA
- Average rainfall days in December: 10 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (8 days).
Average snowfall in December
Mount Jewett, PA
- Average snowfall in December: 12.17"
The month with the highest snowfall is February (13.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Mount Jewett, PA
- Average snowfall days in December: 20.7 days
The month with the highest number of snowfall days is January (23 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mount Jewett, 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 3min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in December
Mount Jewett, PA
- Average sunshine days in December: 5.5 days
The month with the most sunshine days is September (12.2 days).
The month with the least sunshine days is January (4.8 days).
Average UV index in December
Mount Jewett, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Mount Jewett, PA
- Average cloud cover in December: 77
The month with the most cloud cover is January (Cloud cover 79).
The months with the least cloud cover are July and August (Cloud cover 43).
Average visibility in December
Mount Jewett, PA
- Average visibility in December: 4mi
The months with the highest visibility are March, April, May, June, July, October and November (5mi).
The months with the lowest visibility are January, February, August, September and December (4mi).
Mount Jewett, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location