December weather forecastDelavan, WI
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Delavan, Wisconsin, with an average temperature ranging between min 21.4°F (-5.9°C) and max 31.5°F (-0.3°C).Temperature
The start of December comes with a reduction in the average high-temperature, receding from a chilly 43.7°F (6.5°C) in November to a subzero cold 31.5°F (-0.3°C). In Delavan, the average low-temperature during the month of December is a still freezing cold 21.4°F (-5.9°C).Humidity
The average relative humidity in December is 83%.Rainfall
January and December are months with the least rain in Delavan when the rain falls for 6.5 days and typically aggregates up to 0.79" (20mm) of rain.Snowfall
Months with snowfall are January through April, October through December. In Delavan, in December, during 9.9 snowfall days, 1.69" (43mm) of snow is typically accumulated. In Delavan, Wisconsin, during the entire year, snow falls for 47.5 days and aggregates up to 11.81" (300mm) of snow.Daylight
The month with the shortest days in Delavan is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:05 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:31 pm CST.
Sunshine
The average sunshine in December in Delavan is 3.8h.UV index
January 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 average individuals.Note: A typical high UV index of 1 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. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Delavan, WI
- Average high temperature in December: 31.5°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 (24.8°F).
- Average low temperature in December: 21.4°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in December
Delavan, WI
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Delavan, WI
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Delavan, WI
- Average humidity in December: 83%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in December
Delavan, WI
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is July (2.56").
The driest months (with the least rainfall) are January and December (0.79").
Average rainfall days in December
Delavan, WI
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is July (17.4 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall in December
Delavan, WI
- Average snowfall in December: 1.69"
The month with the highest snowfall is January (3.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Delavan, WI
- Average snowfall days in December: 9.9 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Delavan, WI
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 48min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Delavan, WI
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in December
Delavan, 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 and December (UV index 1).
Average cloud cover in December
Delavan, WI
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July, August and September (Cloud cover 35).
Average visibility in December
Delavan, WI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
