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 arrival of December suggests a slight decrease in the average high-temperature, moving from a mild 57.7°F (14.3°C) in November to a frosty 48.9°F (9.4°C). Porters Grove experiences an average low-temperature reading of 36.5°F (2.5°C) throughout December.Humidity
In December, the average relative humidity is 78%.Rainfall
In Porters Grove, during December, the rain falls for 11.7 days and regularly aggregates up to 2.99" (76mm) of precipitation. Throughout the year, there are 154.3 rainfall days, and 31.57" (802mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In December, it is snowing for 0.9 days. Throughout December, 0.35" (9mm) of snow is accumulated. In Porters Grove, Tennessee, during the entire year, snow falls for 8.1 days and aggregates up to 3.11" (79mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 48min of daylight.On the first day of December in Porters Grove, sunrise is at 6:48 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 4:52 pm CST.
Sunshine
The average sunshine in December in Porters Grove is 4.8h.UV index
The months with the lowest UV index are February and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high UV index of 2 in December translates 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. When the Sun is at its strongest around midday, find shade and limit exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Porters Grove in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Porters Grove, TN
- Average high temperature in December: 48.9°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (45°F).
- Average low temperature in December: 36.5°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in December
Porters Grove, TN
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Porters Grove, TN
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is February (9.2mph).
The calmest month (with the lowest average wind speed) is July (5.3mph).
Average humidity in December
Porters Grove, TN
- Average humidity in December: 78%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Porters Grove, TN
- Average rainfall in December: 2.99"
The wettest month (with the highest rainfall) is February (3.5").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in December
Porters Grove, TN
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in December
Porters Grove, TN
- Average snowfall in December: 0.35"
The month with the highest snowfall is March (1.1").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Porters Grove, TN
- Average snowfall days in December: 0.9 days
The months with the highest number of snowfall days are January and February (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Porters Grove, TN
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Porters Grove, TN
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (12 days).
Average UV index in December
Porters Grove, TN
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are February and December (UV index 2).
Average cloud cover in December
Porters Grove, TN
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in December
Porters Grove, TN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Porters Grove, Tennessee, USA
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