December weather forecastGrand Junction, TN
December
Weather in December
The first month of the winter, December, is also a fresh month in Grand Junction, Tennessee, with an average temperature ranging between max 50.4°F (10.2°C) and min 37.6°F (3.1°C).Temperature
A moderate decline in average high-temperatures is noted in December, moving from a moderate 58.6°F (14.8°C) in November to a cool 50.4°F (10.2°C). Nighttime temperature experiences an average drop to an icy 37.6°F (3.1°C) in December.Humidity
The average relative humidity in December in Grand Junction is 79%.Rainfall
In Grand Junction, Tennessee, in December, it is raining for 9.6 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, in Grand Junction, Tennessee, there are 132.5 rainfall days, and 16.26" (413mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Grand Junction. In Grand Junction, during December, snow falls for 0.7 days and regularly aggregates up to 0.04" (1mm) of snow. Throughout the year, in Grand Junction, there are 4.9 snowfall days, and 0.87" (22mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 6:47 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:04 am and sunset at 4:55 pm CST.
Sunshine
In December, the average sunshine is 4.9h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Grand Junction. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In December, a daily maximum UV index of 3 leads to the following instructions:
Act with care - The suggestion to avoid sunburn is emphasized. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grand Junction, TN
- Average high temperature in December: 50.4°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (46.4°F).
- Average low temperature in December: 37.6°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (32.7°F).
Average pressure in December
Grand Junction, 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
Grand Junction, TN
- Average wind speed in December: 8.2mph
The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity in December
Grand Junction, TN
- Average humidity in December: 79%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Grand Junction, TN
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is July (1.89").
The driest months (with the least rainfall) are September and November (0.75").
Average rainfall days in December
Grand Junction, TN
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in December
Grand Junction, TN
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.39").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Grand Junction, TN
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is February (1.6 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
Grand Junction, TN
- Average daylight in December: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 4h and 54min
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
Grand Junction, TN
- Average sunshine days in December: 20.3 days
The month with the most sunshine days is October (21.6 days).
The month with the least sunshine days is July (12.4 days).
Average UV index in December
Grand Junction, TN
- Average UV index in December: 3
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Grand Junction, TN
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in December
Grand Junction, 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).
