December weather forecastMountain Iron, MN
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Mountain Iron, Minnesota, with temperature in the range of an average low of 7.5°F (-13.6°C) and an average high of 19.4°F (-7°C).Temperature
Mountain Iron, Minnesota, observes a minor decrease in the average high-temperature with the arrival of December, falling from November's icy 33.6°F (0.9°C) to a subzero cold 19.4°F (-7°C). The average temperature during December nights in Mountain Iron is registered at an extreme cold 7.5°F (-13.6°C).Humidity
The average relative humidity in December in Mountain Iron is 92%.Rainfall
In Mountain Iron, during December, the rain falls for 2.9 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Mountain Iron, during the entire year, the rain falls for 115.7 days and collects up to 21.18" (538mm) of precipitation.Snowfall
Months with snowfall in Mountain Iron are January through May, September through December. December is the month with the most snowfall. Snow falls for 18 days and accumulates 8.23" (209mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 7:38 am and sunset at 4:21 pm. On the last day of December, in Mountain Iron, sunrise is at 7:58 am and sunset at 4:29 pm CST.
Sunshine
In Mountain Iron, the average sunshine in December is 2.2h.UV index
The months with the lowest UV index in Mountain Iron are January through March, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 1 during December leads to these advisories:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mountain Iron, MN
- Average high temperature in December: 19.4°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (14.4°F).
- Average low temperature in December: 7.5°F
The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (-0.4°F).
Average pressure in December
Mountain Iron, MN
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Mountain Iron, MN
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).
Average humidity in December
Mountain Iron, MN
- Average humidity in December: 92%
The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is May (72%).
Average rainfall in December
Mountain Iron, MN
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is July (2.64").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in December
Mountain Iron, MN
- Average rainfall days in December: 2.9 days
The month with the highest number of rainy days is June (16.9 days).
The month with the least rainy days is February (1.1 days).
Average snowfall in December
Mountain Iron, MN
- Average snowfall in December: 8.23"
The month with the highest snowfall is December (8.23").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Mountain Iron, MN
- Average snowfall days in December: 18 days
The month with the highest number of snowfall days is January (19.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Mountain Iron, MN
- Average daylight in December: 8h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 2h and 12min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 2h and 0min).
Average sunshine days in December
Mountain Iron, MN
- Average sunshine days in December: 12 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in December
Mountain Iron, MN
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in December
Mountain Iron, MN
- Average cloud cover in December: 78
The month with the most cloud cover is January (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Mountain Iron, MN
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
