December weather forecastSouth Rockwood, MI
December
Weather in December
The first month of the winter, December, is also a wintry month in South Rockwood, Michigan, with temperature in the range of an average high of 35.4°F (1.9°C) and an average low of 27.5°F (-2.5°C).Temperature
South Rockwood's December weather shows a moderate shift in high-temperatures, falling from November's chilly 45.7°F (7.6°C) to an icy 35.4°F (1.9°C). Nighttime temperatures in South Rockwood during December report a consistent average of 27.5°F (-2.5°C).Humidity
In South Rockwood, the average relative humidity in December is 82%.Rainfall
The month with the least rainfall is December, when the rain falls for 8.3 days and typically collects 1.26" (32mm) of precipitation.Snowfall
January through May, November and December are months with snowfall in South Rockwood. In South Rockwood, in December, snow falls for 7.4 days, with typically accumulated 1.54" (39mm) of snow. Throughout the year, there are 37.7 snowfall days, and 12.87" (327mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December in South Rockwood, sunrise is at 7:42 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 8:01 am and sunset at 5:11 pm EST.
Sunshine
In December, the average sunshine is 3.6h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in South Rockwood. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 1 during December leads to these advisories:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. When the Sun is at its strongest around midday, find shade and limit exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
South Rockwood, MI
- Average high temperature in December: 35.4°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in December
South Rockwood, MI
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
South Rockwood, MI
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in December
South Rockwood, MI
- Average humidity in December: 82%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
South Rockwood, MI
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is December (1.26").
Average rainfall days in December
South Rockwood, MI
- Average rainfall days in December: 8.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (6.1 days).
Average snowfall in December
South Rockwood, MI
- Average snowfall in December: 1.54"
The month with the highest snowfall is February (4.25").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
South Rockwood, MI
- Average snowfall days in December: 7.4 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
South Rockwood, MI
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in December
South Rockwood, MI
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in December
South Rockwood, MI
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
South Rockwood, MI
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
South Rockwood, MI
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
