December weather forecastTunnelhill, PA
December
Weather in December
December, the first month of the winter in Tunnelhill, is also an icy month, with an average temperature varying between 36.5°F (2.5°C) and 26.2°F (-3.2°C).Temperature
December's onset corresponds with a shift in the average high-temperature, moving from a chilly 46°F (7.8°C) in November to a cold 36.5°F (2.5°C). Throughout the month of December, Tunnelhill observes an average nighttime temperature of 26.2°F (-3.2°C).Humidity
The average relative humidity in December is 85%.Rainfall
In Tunnelhill, in December, during 10.8 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. In Tunnelhill, during the entire year, the rain falls for 170 days and collects up to 33.46" (850mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Tunnelhill, during December, snow falls for 13.8 days and regularly aggregates up to 7.01" (178mm) of snow. In Tunnelhill, during the entire year, snow falls for 70.6 days and aggregates up to 40.12" (1019mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:18 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 4:57 pm EST.
Sunshine
In December, the average sunshine is 3.4h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 1 during December, leads to the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Tunnelhill, PA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in December: 26.2°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Tunnelhill, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Tunnelhill, PA
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Tunnelhill, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, June and July (78%).
Average rainfall in December
Tunnelhill, PA
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is November (2.01").
Average rainfall days in December
Tunnelhill, PA
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in December
Tunnelhill, PA
- Average snowfall in December: 7.01"
The month with the highest snowfall is February (8.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Tunnelhill, PA
- Average snowfall days in December: 13.8 days
The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Tunnelhill, PA
- Average daylight in December: 9h and 18min
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 18min).
- Average sunshine in December: 3h and 24min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in December
Tunnelhill, PA
- Average sunshine days in December: 9.8 days
The month with the most sunshine days is November (13.5 days).
The months with the least sunshine days are January and February (7.7 days).
Average UV index in December
Tunnelhill, 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
Tunnelhill, PA
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in December
Tunnelhill, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
