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
Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from an icy 41.7°F (5.4°C) to a subzero cold 28.6°F (-1.9°C). December's nights observe an average temperature of 18.9°F (-7.3°C).Humidity
In Seymour, the average relative humidity in December is 86%.Rainfall
In Seymour, during December, the rain falls for 6.1 days and regularly aggregates up to 1.65" (42mm) of precipitation. In Seymour, during the entire year, the rain falls for 125.3 days and collects up to 24.84" (631mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, in Seymour, it is snowing for 11.9 days. Throughout December, 4.09" (104mm) of snow is accumulated. In Seymour, during the entire year, snow falls for 55.6 days and aggregates up to 22.28" (566mm) 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 December in Seymour, sunrise is at 7:10 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:23 pm CST.
Sunshine
The average sunshine in December is 3.6h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 1 during December leads to these instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in Seymour?
What is the average humidity in December in Seymour?
How much does it rain in Seymour in December?
How much does it snow in Seymour in December?
What is the month with the shortest days in Seymour?
How many hours of daylight does Seymour have in December?
What time are sunrise and sunset in December in Seymour?
How many hours of sunshine does Seymour have in December?
When is the lowest UV index in Seymour?
What is the UV index reading in December in Seymour?
Average temperature in December
Seymour, WI
- Average high temperature in December: 28.6°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in December: 18.9°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in December
Seymour, WI
- Average pressure in December: 30.07"Hg
The months with the highest atmospheric pressure are February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Seymour, WI
- Average wind speed in December: 9.6mph
The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in December
Seymour, WI
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in December
Seymour, WI
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in December
Seymour, WI
- Average rainfall days in December: 6.1 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in December
Seymour, WI
- Average snowfall in December: 4.09"
The month with the highest snowfall is February (5.63").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Seymour, WI
- Average snowfall days in December: 11.9 days
The month with the highest number of snowfall days is January (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Seymour, 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 0min).
The months with the least sunshine are January and February (Average sunshine: 3h and 24min).
Average sunshine days in December
Seymour, WI
- Average sunshine days in December: 16.1 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in December
Seymour, 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, November and December (UV index 1).
Average cloud cover in December
Seymour, WI
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in December
Seymour, WI
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Seymour, Wisconsin, USA
Weather forecast for your location
2. Allow the app to use your location
