December weather forecastSaint Bethlehem, TN
December
Weather in December
December, the first month of the winter in Saint Bethlehem, is still a chilly month, with an average temperature fluctuating between 47.3°F (8.5°C) and 34.7°F (1.5°C).Temperature
Saint Bethlehem's December weather comes with a decrease in average high-temperatures, moving from a mild 56.3°F (13.5°C) in November to a chilly 47.3°F (8.5°C). The average low-temperature of 34.7°F (1.5°C) is witnessed during December.Humidity
The average relative humidity in December in Saint Bethlehem is 78%.Rainfall
In Saint Bethlehem, during December, the rain falls for 12 days and regularly aggregates up to 3.03" (77mm) of precipitation. In Saint Bethlehem, during the entire year, the rain falls for 171 days and collects up to 34.92" (887mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Saint Bethlehem. December is the month with the most snowfall in Saint Bethlehem. Snow falls for 2.5 days and accumulates 1.02" (26mm) of snow.Daylight
The month with the shortest days in Saint Bethlehem is December, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 6:43 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:01 am and sunset at 4:43 pm CST.
Sunshine
In Saint Bethlehem, the average sunshine in December is 4.7h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Saint Bethlehem, TN
- Average high temperature in December: 47.3°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (42.6°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).
Average pressure in December
Saint Bethlehem, 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 (29.96"Hg).
Average wind speed in December
Saint Bethlehem, TN
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is February (8.7mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in December
Saint Bethlehem, 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 (72%).
Average rainfall in December
Saint Bethlehem, TN
- Average rainfall in December: 3.03"
The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Saint Bethlehem, TN
- Average rainfall days in December: 12 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in December
Saint Bethlehem, TN
- Average snowfall in December: 1.02"
The month with the highest snowfall is December (1.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Saint Bethlehem, TN
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is January (4 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
Saint Bethlehem, TN
- Average daylight in December: 9h and 42min
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 42min).
- Average sunshine in December: 4h and 42min
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 30min).
Average sunshine days in December
Saint Bethlehem, TN
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in December
Saint Bethlehem, TN
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Saint Bethlehem, TN
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in December
Saint Bethlehem, TN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
