December weather forecastSummit Lake, WI
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Summit Lake, Wisconsin, with an average temperature varying between 24.6°F (-4.1°C) and 16°F (-8.9°C).Temperature
Onset of December comes with a temperature decline, the average high falling from a wintry 36.5°F (2.5°C) in November to a freezing cold 24.6°F (-4.1°C). A mean low-temperature of 16°F (-8.9°C) is a distinguishing feature of December, indicating a slight dip from daytime highs.Humidity
The average relative humidity in December is 88%.Rainfall
In Summit Lake, in December, it is raining for 4.6 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, there are 120.4 rainfall days, and 22.99" (584mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 17.6 days. Throughout December, 7.36" (187mm) of snow is accumulated. In Summit Lake, during the entire year, snow falls for 96.4 days and aggregates up to 43.19" (1097mm) of snow.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:16 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:23 pm CST.
Sunshine
The average sunshine in December is 2.7h.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 value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Summit Lake, WI
- Average high temperature in December: 24.6°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (19.8°F).
- Average low temperature in December: 16°F
The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).
Average pressure in December
Summit Lake, 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
Summit Lake, WI
- Average wind speed in December: 8.1mph
The windiest months (with the highest average wind speed) are April and November (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in December
Summit Lake, WI
- Average humidity in December: 88%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (72%).
Average rainfall in December
Summit Lake, WI
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is June (2.83").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in December
Summit Lake, WI
- Average rainfall days in December: 4.6 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in December
Summit Lake, WI
- Average snowfall in December: 7.36"
The month with the highest snowfall is February (7.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Summit Lake, WI
- Average snowfall days in December: 17.6 days
The month with the highest number of snowfall days is January (20.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Summit Lake, WI
- Average daylight in December: 8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 2h and 42min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 12min).
Average sunshine days in December
Summit Lake, WI
- Average sunshine days in December: 13.8 days
The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (10.8 days).
Average UV index in December
Summit Lake, 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
Summit Lake, WI
- Average cloud cover in December: 74
The months with the most cloud cover are January and February (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in December
Summit Lake, WI
- Average visibility in December: 5mi
The months with the highest visibility are May, June and October (6mi).
The months with the lowest visibility are January and February (4mi).
