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 shift from November to December includes a minor decrease in the average high-temperature, lightly dropping from a refreshing 57.9°F (14.4°C) to a chilly 49.6°F (9.8°C). In Hydro, the average temperature during the nights of December drops to an icy 36.7°F (2.6°C).Humidity
The months with the highest humidity are March and December, with an average relative humidity of 79%.Rainfall
In Hydro, during December, the rain falls for 9.7 days and regularly aggregates up to 1.38" (35mm) of precipitation. Throughout the year, there are 130.6 rainfall days, and 16.89" (429mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Hydro, in December, snow falls for 1.7 days, with typically accumulated 0.24" (6mm) of snow. In Hydro, during the entire year, snow falls for 7.9 days and aggregates up to 1.26" (32mm) of snow.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 6:44 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:02 am and sunset at 4:49 pm CST.
Sunshine
In December, the average sunshine is 4.8h.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 2 in December translates into this advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. To protect against the Sun's most potent rays, avoid direct exposure around midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December in Hydro?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Hydro have 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
Hydro, TN
- Average high temperature in December: 49.6°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (45.5°F).
- Average low temperature in December: 36.7°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in December
Hydro, TN
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Hydro, TN
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).
Average humidity in December
Hydro, TN
- Average humidity in December: 79%
The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Hydro, TN
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is February (1.97").
The driest month (with the least rainfall) is September (0.94").
Average rainfall days in December
Hydro, TN
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (7.7 days).
Average snowfall in December
Hydro, TN
- Average snowfall in December: 0.24"
The month with the highest snowfall is November (0.35").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Hydro, TN
- Average snowfall days in December: 1.7 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hydro, 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 36min).
Average sunshine days in December
Hydro, TN
- Average sunshine days in December: 18.7 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is July (12.4 days).
Average UV index in December
Hydro, 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
Hydro, TN
- Average cloud cover in December: 50
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in December
Hydro, TN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are May, July and August (5mi).
Hydro, Tennessee, USA
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