December weather forecastSwanington, IN
December
Weather in December
The first month of the winter, December, is also a wintry month in Swanington, Indiana, with an average temperature varying between 36.7°F (2.6°C) and 26.4°F (-3.1°C).Temperature
During the transition into December, Swanington observes a decrease in the average high-temperature, falling from a chilly 48°F (8.9°C) in November to a cold 36.7°F (2.6°C). In Swanington, in December, the average low-temperature is a subzero cold 26.4°F (-3.1°C).Humidity
In December, the average relative humidity is 81%.Rainfall
In Swanington, Indiana, in December, during 7.3 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Swanington, during the entire year, the rain falls for 139 days and collects up to 20.16" (512mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Swanington, Indiana, in December, during 6.7 snowfall days, 1.3" (33mm) of snow is typically accumulated. In Swanington, during the entire year, snow falls for 32.4 days and aggregates up to 7.64" (194mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:54 am and sunset at 5:22 pm. On the last day of the month, sunrise is at 8:12 am and sunset at 5:32 pm EST.
Sunshine
In Swanington, the average sunshine in December is 4.3h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Swanington. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 1 in December translates into this advice:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. 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 aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Swanington, IN
- Average high temperature in December: 36.7°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in December
Swanington, IN
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Swanington, IN
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in December
Swanington, IN
- Average humidity in December: 81%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Swanington, IN
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in December
Swanington, IN
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in December
Swanington, IN
- Average snowfall in December: 1.3"
The month with the highest snowfall is January (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Swanington, IN
- Average snowfall days in December: 6.7 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Swanington, IN
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 18min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Swanington, IN
- Average sunshine days in December: 18.8 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in December
Swanington, IN
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Swanington, IN
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Swanington, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
