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
During the transition into December, Calhoun observes a decrease in the average high-temperature, falling from a fresh 52°F (11.1°C) in November to an icy 41.5°F (5.3°C). Calhoun experiences a mean low-temperature of 30.9°F (-0.6°C) during December.Humidity
In December, the average relative humidity is 78%.Rainfall
In Calhoun, in December, during 10.5 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, there are 152.3 rainfall days, and 27.99" (711mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Calhoun. In Calhoun, in December, snow falls for 4.5 days, with typically accumulated 1.34" (34mm) of snow. Throughout the year, there are 20.3 snowfall days, and 5.47" (139mm) of snow is accumulated.Daylight
December has the shortest days of the year in Calhoun, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:51 am and sunset at 4:31 pm. On the last day of December, in Calhoun, sunrise is at 7:09 am and sunset at 4:41 pm CST.
Sunshine
In December, the average sunshine is 4.6h.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 hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 2 during December translates into these guidelines:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
Is December cold in Calhoun?
What is the average humidity in December in Calhoun?
How much does it rain in Calhoun in December?
How many days does it snow in December in Calhoun?
What is the month with the shortest days in Calhoun?
How many hours of daylight does Calhoun have in December?
What time are sunrise and sunset in December in Calhoun?
How long on average sun shines in December in Calhoun?
What is the month with the lowest UV index in Calhoun?
How high is the UV index in December in Calhoun?
Average temperature in December
Calhoun, IL
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in December: 30.9°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Calhoun, 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
Calhoun, IL
- Average wind speed in December: 9.4mph
The windiest months (with the highest average wind speed) are January and February (10.2mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in December
Calhoun, IL
- Average humidity in December: 78%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Calhoun, IL
- Average rainfall in December: 2.17"
The wettest month (with the highest rainfall) is April (4.09").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in December
Calhoun, IL
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in December
Calhoun, IL
- Average snowfall in December: 1.34"
The month with the highest snowfall is January (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Calhoun, IL
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (5.9 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
Calhoun, IL
- Average daylight in December: 9h and 3min
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 30min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
Calhoun, IL
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is July (11.2 days).
Average UV index in December
Calhoun, IL
- Average UV index in December: 2
The months with the highest UV index are May, 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
Calhoun, IL
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in December
Calhoun, 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).
Calhoun, Illinois, USA
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