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
The shift from November to December involves a decrease in the average high-temperature, from a cold 41.4°F (5.2°C) to a subzero cold 27.5°F (-2.5°C). Rockton experiences a steady low-temperature of 17.1°F (-8.3°C) throughout December.Humidity
The average relative humidity in December is 87%.Rainfall
In Rockton, in December, it is raining for 5.3 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, in Rockton, Wisconsin, there are 136.1 rainfall days, and 28.7" (729mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Rockton, in December, snow falls for 12.1 days, with typically accumulated 4.96" (126mm) of snow. Throughout the year, in Rockton, there are 60.1 snowfall days, and 25.24" (641mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:16 am and sunset at 4:26 pm. On the last day of December, sunrise is at 7:35 am and sunset at 4:35 pm CST.
Sunshine
In Rockton, the average sunshine in December is 3.5h.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: An average UV index of 1 in December transforms into this advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December in Rockton?
When is the lowest UV index?
What is the UV index intensity in December in Rockton?
Average temperature in December
Rockton, WI
- Average high temperature in December: 27.5°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 (21.6°F).
- Average low temperature in December: 17.1°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (9°F).
Average pressure in December
Rockton, 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 (29.9"Hg).
Average wind speed in December
Rockton, WI
- Average wind speed in December: 8.7mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Rockton, WI
- Average humidity in December: 87%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and October (78%).
Average rainfall in December
Rockton, WI
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is June (4.88").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
Rockton, WI
- Average rainfall days in December: 5.3 days
The month with the highest number of rainy days is June (18.5 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Rockton, WI
- Average snowfall in December: 4.96"
The month with the highest snowfall is February (6.22").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rockton, WI
- Average snowfall days in December: 12.1 days
The months with the highest number of snowfall days are January and February (13.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rockton, 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 3min
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 6min).
Average sunshine days in December
Rockton, WI
- Average sunshine days in December: 16 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in December
Rockton, WI
- 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
Rockton, WI
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Rockton, WI
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).
Rockton, Wisconsin, USA
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