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
December's arrival signals a significant decrease in average high-temperatures, falling from November's icy 42.4°F (5.8°C) to a subzero cold 27°F (-2.8°C). In Swea City, the average temperature during the nights of December drops to a still freezing cold 16.2°F (-8.8°C).Humidity
In Swea City, the average relative humidity in December is 86%.Rainfall
In Swea City, in December, it is raining for 5.1 days, with typically 1.38" (35mm) of accumulated precipitation. In Swea City, during the entire year, the rain falls for 130.4 days and collects up to 24.65" (626mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Swea City. In Swea City, in December, snow falls for 13.4 days, with typically accumulated 3.9" (99mm) of snow. Throughout the year, in Swea City, Iowa, there are 57.5 snowfall days, and 23.31" (592mm) of snow is accumulated.Daylight
December has the shortest days of the year in Swea City, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:30 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:49 am and sunset at 4:51 pm CST.
Sunshine
In Swea City, the average sunshine in December is 4.1h.UV index
In Swea City, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
How cold is December in Swea City?
What is the average humidity in December in Swea City?
How many days does it rain in December in Swea City?
How many days does it snow in December in Swea City?
What is the month with the shortest days in Swea City?
How many hours of daylight does Swea City have in December?
When are sunrise and sunset in December in Swea City?
How many hours of sunshine does Swea City have in December?
What is the UV index reading in December in Swea City?
Average temperature in December
Swea City, IA
- Average high temperature in December: 27°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.1°F).
- Average low temperature in December: 16.2°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).
Average pressure in December
Swea City, IA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Swea City, IA
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is February (10.8mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in December
Swea City, IA
- Average humidity in December: 86%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (68%).
Average rainfall in December
Swea City, IA
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is June (4.02").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in December
Swea City, IA
- Average rainfall days in December: 5.1 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Swea City, IA
- Average snowfall in December: 3.9"
The month with the highest snowfall is February (6.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Swea City, IA
- Average snowfall days in December: 13.4 days
The month with the highest number of snowfall days is January (13.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Swea City, IA
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Swea City, IA
- Average sunshine days in December: 15.3 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is June (8.5 days).
Average UV index in December
Swea City, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in December
Swea City, IA
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in December
Swea City, IA
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Swea City, Iowa, USA
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