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
Stepping into December, Mount Zion observes a temperature decline, with the average high falling from November's chilly 49.8°F (9.9°C) to an icy 38.5°F (3.6°C). Mount Zion experiences an average temperature drop to a freezing cold 27.9°F (-2.3°C) during December nights.Humidity
In Mount Zion, the average relative humidity in December is 79%.Rainfall
The months with the least rainfall in Mount Zion are February and December Rain falls for 7.1 days and accumulates 0.87" (22mm) of rain.Snowfall
January through April, November and December are months with snowfall in Mount Zion, Illinois. In Mount Zion, in December, during 5.3 snowfall days, 0.83" (21mm) of snow is typically accumulated. Throughout the year, in Mount Zion, there are 23.1 snowfall days, and 5.67" (144mm) of snow is accumulated.Daylight
December has the shortest days of the year in Mount Zion, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 6:58 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:41 pm CST.
Sunshine
The average sunshine in December in Mount Zion 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 value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: In December, a daily UV index of 2 turns into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
How cold does it get in Mount Zion in December?
What is the average humidity in December in Mount Zion?
What is the driest month in Mount Zion?
How much does it rain in Mount Zion in December?
How many days does it snow in December in Mount Zion?
What is the month with the shortest days in Mount Zion?
What is the average length of the day in December in Mount Zion?
What time are sunrise and sunset in December in Mount Zion?
How long on average sun shines in December in Mount Zion?
What are the months with the lowest UV index in Mount Zion?
How high is the UV index in December in Mount Zion?
Average temperature in December
Mount Zion, IL
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in December: 27.9°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Mount Zion, IL
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Mount Zion, IL
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in December
Mount Zion, IL
- Average humidity in December: 79%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Mount Zion, IL
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is May (2.01").
The driest months (with the least rainfall) are February and December (0.87").
Average rainfall days in December
Mount Zion, IL
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in December
Mount Zion, IL
- Average snowfall in December: 0.83"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Mount Zion, IL
- Average snowfall days in December: 5.3 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Mount Zion, IL
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Mount Zion, IL
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in December
Mount Zion, 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
Mount Zion, IL
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in December
Mount Zion, 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).
Mount Zion, Illinois, USA
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