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
A change in temperatures is noted as November gives way to December, with average highs reducing from a frosty 47.5°F (8.6°C) to a cold 35.8°F (2.1°C). Dunlap experiences a steady low-temperature of 25°F (-3.9°C) throughout December.Humidity
In December, the average relative humidity is 81%.Rainfall
In Dunlap, Illinois, in December, it is raining for 5.4 days, with typically 0.63" (16mm) of accumulated precipitation. Throughout the year, there are 116.8 rainfall days, and 13.98" (355mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Dunlap, during December, snow falls for 5.8 days and regularly aggregates up to 0.83" (21mm) of snow. Throughout the year, there are 26.8 snowfall days, and 6.26" (159mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Dunlap.On the first day of the month, sunrise is at 7:04 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:41 pm CST.
Sunshine
In December, the average sunshine is 4.3h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Dunlap have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Dunlap have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Dunlap, IL
- Average high temperature in December: 35.8°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in December: 25°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in December
Dunlap, IL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Dunlap, IL
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Dunlap, IL
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Dunlap, IL
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in December
Dunlap, IL
- Average rainfall days in December: 5.4 days
The month with the highest number of rainy days is May (15.2 days).
The months with the least rainy days are January and February (4.2 days).
Average snowfall in December
Dunlap, IL
- Average snowfall in December: 0.83"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Dunlap, IL
- Average snowfall days in December: 5.8 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Dunlap, IL
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 4h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Dunlap, IL
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in December
Dunlap, IL
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Dunlap, IL
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in December
Dunlap, 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).
Dunlap, Illinois, USA
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