December weather forecastLyons, WI
December
Weather in December
The first month of the winter, December, is also a wintry month in Lyons, Wisconsin, with an average temperature fluctuating between 22.3°F (-5.4°C) and 32.4°F (0.2°C).Temperature
As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a chilly 43.7°F (6.5°C) to a cold 32.4°F (0.2°C). Lyons experiences a nighttime temperature average of 22.3°F (-5.4°C) during December.Humidity
In Lyons, the average relative humidity in December is 82%.Rainfall
In Lyons, Wisconsin, in December, it is raining for 8.7 days, with typically 1.61" (41mm) of accumulated precipitation. In Lyons, during the entire year, the rain falls for 158.7 days and collects up to 29.88" (759mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Lyons. In Lyons, in December, during 11.9 snowfall days, 3.46" (88mm) of snow is typically accumulated. In Lyons, during the entire year, snow falls for 56.1 days and aggregates up to 20.04" (509mm) of snow.Daylight
The month with the shortest days in Lyons is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 4:20 pm. On the last day of December, in Lyons, sunrise is at 7:23 am and sunset at 4:30 pm CST.
Sunshine
In Lyons, the average sunshine in December is 4h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high daily UV index of 1 during December translates into the following directions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lyons, WI
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (25.7°F).
- Average low temperature in December: 22.3°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in December
Lyons, WI
- Average pressure in December: 30.09"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Lyons, WI
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in December
Lyons, WI
- Average humidity in December: 82%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April, October and November (77%).
Average rainfall in December
Lyons, WI
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is June (3.78").
The driest month (with the least rainfall) is February (1.54").
Average rainfall days in December
Lyons, WI
- Average rainfall days in December: 8.7 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in December
Lyons, WI
- Average snowfall in December: 3.46"
The month with the highest snowfall is January (5.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lyons, WI
- Average snowfall days in December: 11.9 days
The month with the highest number of snowfall days is January (14.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lyons, 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: 4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Lyons, WI
- Average sunshine days in December: 13.8 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (9 days).
Average UV index in December
Lyons, 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 and December (UV index 1).
Average cloud cover in December
Lyons, WI
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in December
Lyons, 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).
