December weather forecastWyanet, IL
December
Weather in December
The first month of the winter, December, is also an icy month in Wyanet, Illinois, with an average temperature fluctuating between 34.5°F (1.4°C) and 24.1°F (-4.4°C).Temperature
Start of December brings a shift in the average high-temperature, falling from November's frosty 46.4°F (8°C) to a wintry 34.5°F (1.4°C). Wyanet, during December, witnesses an average low-temperature of 24.1°F (-4.4°C).Humidity
The average relative humidity in December in Wyanet is 82%.Rainfall
In Wyanet, during December, the rain falls for 6.2 days and regularly aggregates up to 0.91" (23mm) of precipitation. In Wyanet, Illinois, during the entire year, the rain falls for 130 days and collects up to 17.64" (448mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In December, in Wyanet, it is snowing for 7.1 days. Throughout December, 1.14" (29mm) of snow is accumulated. Throughout the year, in Wyanet, there are 33.4 snowfall days, and 7.05" (179mm) of snow is accumulated.Daylight
December has the shortest days of the year in Wyanet, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:05 am and sunset at 4:29 pm. On the last day of December, sunrise is at 7:24 am and sunset at 4:39 pm CST.
Sunshine
In Wyanet, the average sunshine in December is 4.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Wyanet. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Wyanet, IL
- Average high temperature in December: 34.5°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in December
Wyanet, IL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Wyanet, IL
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in December
Wyanet, IL
- Average humidity in December: 82%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Wyanet, IL
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in December
Wyanet, IL
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in December
Wyanet, IL
- Average snowfall in December: 1.14"
The month with the highest snowfall is January (2.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Wyanet, IL
- Average snowfall days in December: 7.1 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Wyanet, IL
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 12min
The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Wyanet, IL
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in December
Wyanet, IL
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Wyanet, IL
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in December
Wyanet, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
