December weather forecastSwift, MN
December
Weather in December
December, the first month of the winter in Swift, is also a subzero cold month, with an average temperature varying between 17.8°F (-7.9°C) and 8.8°F (-12.9°C).Temperature
December brings with it a considerable temperature decrease, with average high-temperatures dropping from November's cold 32.9°F (0.5°C) to a subzero cold 17.8°F (-7.9°C). Swift's nighttime average temperature in December subtly descends to an extreme cold 8.8°F (-12.9°C) from the daily highs.Humidity
The average relative humidity in December is 91%.Rainfall
In Swift, in December, during 2.3 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. Throughout the year, there are 109 rainfall days, and 18.66" (474mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, in Swift, it is snowing for 17.6 days. Throughout December, 4.8" (122mm) of snow is accumulated. In Swift, during the entire year, snow falls for 99.7 days and aggregates up to 28.27" (718mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 18min of daylight.On the first day of the month, sunrise is at 7:53 am and sunset at 4:26 pm. On the last day of December, in Swift, sunrise is at 8:14 am and sunset at 4:34 pm CST.
Sunshine
The average sunshine in December in Swift is 2.2h.UV index
The months with the lowest UV index in Swift are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 1 during December translates into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. 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
Average temperature in December
Swift, MN
- Average high temperature in December: 17.8°F
The warmest months (with the highest average high temperature) are July and August (73°F).
The month with the lowest average high temperature is January (13.8°F).
- Average low temperature in December: 8.8°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (1°F).
Average pressure in December
Swift, MN
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Swift, MN
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is November (9.7mph).
The calmest month (with the lowest average wind speed) is August (7.5mph).
Average humidity in December
Swift, MN
- Average humidity in December: 91%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is May (69%).
Average rainfall in December
Swift, MN
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is July (2.87").
The driest months (with the least rainfall) are January and February (0.67").
Average rainfall days in December
Swift, MN
- Average rainfall days in December: 2.3 days
The month with the highest number of rainy days is June (16.3 days).
The month with the least rainy days is January (1.5 days).
Average snowfall in December
Swift, MN
- Average snowfall in December: 4.8"
The month with the highest snowfall is January (4.96").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Swift, MN
- Average snowfall days in December: 17.6 days
The month with the highest number of snowfall days is January (20.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Swift, MN
- Average daylight in December: 8h and 18min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in December: 2h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 1h and 54min).
Average sunshine days in December
Swift, MN
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is August (16.9 days).
The months with the least sunshine days are March and June (11.6 days).
Average UV index in December
Swift, MN
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Swift, MN
- Average cloud cover in December: 78
The month with the most cloud cover is January (Cloud cover 82).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Swift, MN
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and March (4mi).
