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
Hecker's weather in December involves a decrease in the average high-temperature, moving down from November's cool 53.6°F (12°C) to a chilly 43.3°F (6.3°C). During December, the nighttime temperature in Hecker averages of 31.1°F (-0.5°C).Humidity
In Hecker, the average relative humidity in December is 77%.Rainfall
In Hecker, in December, it is raining for 8.9 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, in Hecker, there are 154.1 rainfall days, and 35.28" (896mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Hecker, during December, snow falls for 3.3 days and regularly aggregates up to 0.87" (22mm) of snow. Throughout the year, there are 18.2 snowfall days, and 6.38" (162mm) of snow is accumulated.Daylight
December has the shortest days of the year in Hecker, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 6:58 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:16 am and sunset at 4:49 pm CST.
Sunshine
In Hecker, the average sunshine in December is 4.9h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
How cold is December in Hecker?
What is the average humidity in December in Hecker?
How many days does it rain in December in Hecker?
How many days does it snow in December in Hecker?
What is the month with the shortest days in Hecker?
How many hours of daylight does Hecker have in December?
When are sunrise and sunset in December in Hecker?
How long on average sun shines in December in Hecker?
When is the lowest UV index in Hecker?
What is the UV index intensity in December in Hecker?
Average temperature in December
Hecker, IL
- Average high temperature in December: 43.3°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in December: 31.1°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Hecker, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Hecker, IL
- Average wind speed in December: 8.7mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in December
Hecker, IL
- Average humidity in December: 77%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Hecker, IL
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.85").
Average rainfall days in December
Hecker, IL
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Hecker, IL
- Average snowfall in December: 0.87"
The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Hecker, IL
- Average snowfall days in December: 3.3 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Hecker, IL
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Hecker, IL
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in December
Hecker, IL
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Hecker, IL
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 27).
Average visibility in December
Hecker, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Hecker, Illinois, USA
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