December weather forecastRock Springs, WI
December
Weather in December
December, the first month of the winter in Rock Springs, is also a subzero cold month, with an average temperature fluctuating between 28.8°F (-1.8°C) and 18.3°F (-7.6°C).Temperature
With December's onset, the weather shows a temperature decrease, transitioning from a wintry 41.7°F (5.4°C) in November to a freezing cold 28.8°F (-1.8°C). Rock Springs's nights in December cool down to an average low-temperature of 18.3°F (-7.6°C).Humidity
In Rock Springs, the average relative humidity in December is 86%.Rainfall
In Rock Springs, Wisconsin, during December, the rain falls for 4.2 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, in Rock Springs, there are 117.9 rainfall days, and 21.02" (534mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Rock Springs, in December, during 10.9 snowfall days, 2.95" (75mm) of snow is typically accumulated. In Rock Springs, during the entire year, snow falls for 54.1 days and aggregates up to 17.09" (434mm) 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 the month, sunrise is at 7:13 am and sunset at 4:24 pm. On the last day of December, sunrise is at 7:32 am and sunset at 4:33 pm CST.
Sunshine
In Rock Springs, the average sunshine in December is 3.5h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 1 during December translates into the following directions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Boost your sun resistance with garments that are densely woven yet spacious. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rock Springs, WI
- Average high temperature in December: 28.8°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 (22.3°F).
- Average low temperature in December: 18.3°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in December
Rock Springs, WI
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Rock Springs, WI
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Rock Springs, WI
- Average humidity in December: 86%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Rock Springs, WI
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is June (2.83").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in December
Rock Springs, WI
- Average rainfall days in December: 4.2 days
The months with the highest number of rainy days are May and June (16.1 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in December
Rock Springs, WI
- Average snowfall in December: 2.95"
The month with the highest snowfall is February (4.37").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Rock Springs, WI
- Average snowfall days in December: 10.9 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rock Springs, 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 30min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Rock Springs, WI
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in December
Rock Springs, WI
- Average UV index in December: 1
The months with the highest UV index are 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
Rock Springs, WI
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July, August and September (Cloud cover 36).
Average visibility in December
Rock Springs, WI
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).
