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
As November transitions into December, Green Valley sees a drop in the average high-temperature, transitioning from an icy 41.2°F (5.1°C) to a subzero cold 28.4°F (-2°C). December nights reflect a consistent temperature dip to a still freezing cold 19.8°F (-6.8°C), a slight descent from daytime peaks.Humidity
In Green Valley, the average relative humidity in December is 85%.Rainfall
In Green Valley, in December, during 6.7 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. Throughout the year, in Green Valley, there are 134.3 rainfall days, and 24.06" (611mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, in Green Valley, it is snowing for 13.7 days. Throughout December, 4.88" (124mm) of snow is accumulated. In Green Valley, during the entire year, snow falls for 69.2 days and aggregates up to 26.14" (664mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:11 am and sunset at 4:13 pm. On the last day of December, in Green Valley, sunrise is at 7:30 am and sunset at 4:22 pm CST.
Sunshine
The average sunshine in December is 3.7h.UV index
The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: A typical high UV index of 2 in December suggests the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. 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
How cold is December in Green Valley?
What is the average humidity in December in Green Valley?
How many days does it rain in December in Green Valley?
How many days does it snow in December in Green Valley?
What is the month with the shortest days in Green Valley?
How many hours of daylight does Green Valley have in December?
What time are sunrise and sunset in December in Green Valley?
How long on average sun shines in December in Green Valley?
How high is the UV index in December in Green Valley?
Average temperature in December
Green Valley, WI
- Average high temperature in December: 28.4°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (22.6°F).
- Average low temperature in December: 19.8°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in December
Green Valley, WI
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Green Valley, WI
- Average wind speed in December: 9mph
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 (7mph).
Average humidity in December
Green Valley, WI
- Average humidity in December: 85%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in December
Green Valley, WI
- Average rainfall in December: 1.77"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in December
Green Valley, WI
- Average rainfall days in December: 6.7 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in December
Green Valley, WI
- Average snowfall in December: 4.88"
The month with the highest snowfall is February (6.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Green Valley, WI
- Average snowfall days in December: 13.7 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Green Valley, WI
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in December
Green Valley, WI
- Average sunshine days in December: 15.3 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is April (11.6 days).
Average UV index in December
Green Valley, WI
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and March (UV index 1).
Average cloud cover in December
Green Valley, WI
- Average cloud cover in December: 61
The months with the most cloud cover are January and February (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Green Valley, WI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Green Valley, Wisconsin, USA
Weather forecast for your location
2. Allow the app to use your location