Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Rockland's average high-temperature decreases in December, falling from a wintry 41.2°F (5.1°C) in November to a subzero cold 27.5°F (-2.5°C). Rockland, during the month of December, experiences an average low-temperature of 16.7°F (-8.5°C).Humidity
In December, the average relative humidity is 87%.Rainfall
In Rockland, during December, the rain falls for 6.3 days and regularly aggregates up to 1.73" (44mm) of precipitation. Throughout the year, there are 142.9 rainfall days, and 29.13" (740mm) of precipitation is accumulated.Snowfall
Months with snowfall in Rockland are January through May, October through December. In Rockland, Wisconsin, during December, snow falls for 14.1 days and regularly aggregates up to 5.39" (137mm) of snow. In Rockland, during the entire year, snow falls for 67.6 days and aggregates up to 26.34" (669mm) of snow.Daylight
December has the shortest days of the year in Rockland, with an average of 9h and 0min of daylight.On the first day of December in Rockland, sunrise is at 7:18 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 4:36 pm CST.
Sunshine
The average sunshine in December in Rockland is 3.3h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Rockland, Wisconsin. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: During December, 1 as the daily maximum UV index converts into the following advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Rockland in December?
What is the average humidity in December in Rockland?
How many days does it rain in December in Rockland?
How much does it snow in Rockland in December?
What is the month with the shortest days in Rockland?
What is the average length of the day in December in Rockland?
What time are sunrise and sunset in December in Rockland?
How many hours of sunshine does Rockland have in December?
What are the months with the lowest UV index in Rockland?
What is the UV index intensity in December in Rockland?
Average temperature in December
Rockland, WI
- Average high temperature in December: 27.5°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (21.6°F).
- Average low temperature in December: 16.7°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).
Average pressure in December
Rockland, WI
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Rockland, WI
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in December
Rockland, WI
- Average humidity in December: 87%
The months with the highest relative humidity are January and February (90%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in December
Rockland, WI
- Average rainfall in December: 1.73"
The wettest month (with the highest rainfall) is June (4.57").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in December
Rockland, WI
- Average rainfall days in December: 6.3 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in December
Rockland, WI
- Average snowfall in December: 5.39"
The month with the highest snowfall is February (6.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rockland, WI
- Average snowfall days in December: 14.1 days
The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rockland, WI
- 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 2min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Rockland, WI
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is June (8.4 days).
Average UV index in December
Rockland, WI
- Average UV index in December: 1
The months with the highest UV index are May, 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
Rockland, WI
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Rockland, WI
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Rockland, Wisconsin, USA
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