December weather forecastGary, MN
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Gary, Minnesota, with an average temperature fluctuating between 20.1°F (-6.6°C) and 9°F (-12.8°C).Temperature
Gary's transition into December is marked by a clear temperature shift, receding from an icy 36.3°F (2.4°C) in November to a freezing cold 20.1°F (-6.6°C). Gary in December experiences a low-temperature average of 9°F (-12.8°C).Humidity
In December, the average relative humidity is 89%.Rainfall
In December, the rain falls for 2.5 days. Throughout December, 0.91" (23mm) of precipitation is accumulated. Throughout the year, there are 101.8 rainfall days, and 17.44" (443mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 13.5 days and typically aggregates up to 4.49" (114mm) 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 7:52 am and sunset at 4:36 pm. On the last day of December, sunrise is at 8:12 am and sunset at 4:44 pm CST.
Sunshine
In Gary, the average sunshine in December is 3.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In December, an average UV index of 1 transforms into the following instructions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Gary, MN
- Average high temperature in December: 20.1°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (15.6°F).
- Average low temperature in December: 9°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (1°F).
Average pressure in December
Gary, MN
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Gary, MN
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is October (10.4mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in December
Gary, MN
- Average humidity in December: 89%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is August (63%).
Average rainfall in December
Gary, MN
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is June (3.11").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in December
Gary, MN
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is June (15.6 days).
The month with the least rainy days is January (1.5 days).
Average snowfall in December
Gary, MN
- Average snowfall in December: 4.49"
The month with the highest snowfall is December (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Gary, MN
- Average snowfall days in December: 13.5 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Gary, 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: 3h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Gary, MN
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is August (19.6 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in December
Gary, MN
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Gary, MN
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Gary, MN
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
