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
In December, the meteorological conditions alter, with the average high-temperature shifting from a chilly 47.1°F (8.4°C) in November to a wintry 35.6°F (2°C). December nights in Manteno are marked by an average temperature drop to a freezing cold 25.9°F (-3.4°C).Humidity
In December, the average relative humidity in Manteno is 81%.Rainfall
In December, the rain falls for 5.6 days. Throughout December, 0.59" (15mm) of precipitation is accumulated. In Manteno, during the entire year, the rain falls for 115.5 days and collects up to 11.65" (296mm) of precipitation.Snowfall
Months with snowfall in Manteno, Illinois, are January through April, October through December. In Manteno, in December, snow falls for 6.7 days, with typically accumulated 0.55" (14mm) of snow. In Manteno, Illinois, during the entire year, snow falls for 33.7 days and aggregates up to 4.92" (125mm) of snow.Daylight
December has the shortest days of the year in Manteno, with an average of 9h and 18min of daylight.On the first day of December in Manteno, sunrise is at 6:58 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:32 pm CST.
Sunshine
The average sunshine in December in Manteno, Illinois, is 4.2h.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 high UV index of 1 in December translates into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in Manteno?
What is the average humidity in December in Manteno?
How many days does it rain in December in Manteno?
How much does it snow in Manteno in December?
What is the month with the shortest days in Manteno?
What is the average length of the day in December in Manteno?
When is the sunrise / sunset in December in Manteno?
How many hours of sunshine does Manteno have in December?
When is the lowest UV index in Manteno?
What is the UV index intensity in December in Manteno?
Average temperature in December
Manteno, IL
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in December: 25.9°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 (18.3°F).
Average pressure in December
Manteno, IL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Manteno, IL
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Manteno, IL
- Average humidity in December: 81%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Manteno, IL
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in December
Manteno, IL
- Average rainfall days in December: 5.6 days
The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in December
Manteno, IL
- Average snowfall in December: 0.55"
The month with the highest snowfall is January (1.34").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Manteno, IL
- Average snowfall days in December: 6.7 days
The month with the highest number of snowfall days is January (10.2 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
Manteno, 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 1min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Manteno, IL
- Average sunshine days in December: 20.2 days
The month with the most sunshine days is November (20.8 days).
The months with the least sunshine days are June and July (12.2 days).
Average UV index in December
Manteno, 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
Manteno, IL
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Manteno, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Manteno, Illinois, USA
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