December weather forecastIona, MN
December
Weather in December
December, the first month of the winter in Iona, is also a subzero cold month, with an average temperature varying between 25.5°F (-3.6°C) and 14.5°F (-9.7°C).Temperature
A decrease in the average high-temperature marks December, falling from November's icy 41.4°F (5.2°C) to a freezing cold 25.5°F (-3.6°C). An average nighttime temperature of 14.5°F (-9.7°C) is witnessed throughout December.Humidity
In December, the average relative humidity is 85%.Rainfall
In Iona, during December, the rain falls for 4.5 days and regularly aggregates up to 1.34" (34mm) of precipitation. In Iona, Minnesota, during the entire year, the rain falls for 113.2 days and collects up to 22.2" (564mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Iona, in December, during 12.2 snowfall days, 5.2" (132mm) of snow is typically accumulated. In Iona, during the entire year, snow falls for 56.8 days and aggregates up to 26.69" (678mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:38 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 4:55 pm CST.
Sunshine
In Iona, the average sunshine in December is 3.9h.UV index
In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Iona, MN
- Average high temperature in December: 25.5°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (20.8°F).
- Average low temperature in December: 14.5°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).
Average pressure in December
Iona, MN
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Iona, MN
- Average wind speed in December: 10.8mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in December
Iona, MN
- Average humidity in December: 85%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Iona, MN
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is June (3.11").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in December
Iona, MN
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in December
Iona, MN
- Average snowfall in December: 5.2"
The month with the highest snowfall is February (6.3").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Iona, MN
- Average snowfall days in December: 12.2 days
The month with the highest number of snowfall days is December (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Iona, MN
- 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: 3h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Iona, MN
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in December
Iona, MN
- Average UV index in December: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in December
Iona, MN
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in December
Iona, MN
- 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).
