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 start of December involves a subtle temperature drop, shifting from a mild 58.6°F (14.8°C) in November to a cool 50.2°F (10.1°C). An average low-temperature of 37°F (2.8°C) is observed during the December nights.Humidity
In Hornsby, the average relative humidity in December is 79%.Rainfall
In Hornsby, in December, it is raining for 12.9 days, with typically 3.82" (97mm) of accumulated precipitation. Throughout the year, there are 169.4 rainfall days, and 40.39" (1026mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Hornsby, in December, during 0.9 snowfall days, 0.35" (9mm) of snow is typically accumulated. Throughout the year, there are 7.5 snowfall days, and 2.99" (76mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 48min of daylight.On the first day of December, sunrise is at 6:46 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 4:53 pm CST.
Sunshine
In Hornsby, the average sunshine in December is 4.8h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Hornsby in December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Hornsby have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December in Hornsby?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Hornsby, TN
- Average high temperature in December: 50.2°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (46.6°F).
- Average low temperature in December: 37°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in December
Hornsby, 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
Hornsby, TN
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest month (with the lowest average wind speed) is July (4.9mph).
Average humidity in December
Hornsby, 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 (72%).
Average rainfall in December
Hornsby, TN
- Average rainfall in December: 3.82"
The wettest month (with the highest rainfall) is February (4.53").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Hornsby, TN
- Average rainfall days in December: 12.9 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in December
Hornsby, TN
- Average snowfall in December: 0.35"
The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Hornsby, TN
- Average snowfall days in December: 0.9 days
The months with the highest number of snowfall days are January and February (2.2 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hornsby, TN
- Average daylight in December: 9h and 5min
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 5min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Hornsby, TN
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in December
Hornsby, TN
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Hornsby, TN
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June and September (Cloud cover 28).
Average visibility in December
Hornsby, 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).
Hornsby, Tennessee, USA
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