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
With the onset of December, Swea City experiences a noticeable temperature shift, with the average high-temperature receding from an icy 42.4°F (5.8°C) in November to a subzero cold 27°F (-2.8°C). Throughout December, Swea City experiences a low-temperature average of 16.2°F (-8.8°C).Humidity
The average relative humidity in December is 86%.Rainfall
In Swea City, in December, during 5.1 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Swea City, Iowa, during the entire year, the rain falls for 130.4 days and collects up to 24.65" (626mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Swea City, in December, during 13.4 snowfall days, 3.9" (99mm) of snow is typically accumulated. In Swea City, during the entire year, snow falls for 57.5 days and aggregates up to 23.31" (592mm) of snow.Daylight
December has the shortest days of the year, 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 December, the average sunshine is 4.1h.UV index
In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Swea City in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the UV index intensity in December?
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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