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
Start of December brings a shift in the average high-temperature, falling from November's frosty 49.6°F (9.8°C) to an icy 38.5°F (3.6°C). Arcola's temperature in December lowers to a consistent average of 28°F (-2.2°C) during the nights.Humidity
In December, the average relative humidity in Arcola is 80%.Rainfall
In December, in Arcola, the rain falls for 9.3 days. Throughout December, 1.54" (39mm) of precipitation is accumulated. In Arcola, during the entire year, the rain falls for 151.5 days and collects up to 25.71" (653mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Arcola. In Arcola, in December, snow falls for 6.5 days, with typically accumulated 1.97" (50mm) of snow. In Arcola, during the entire year, snow falls for 28.3 days and aggregates up to 7.72" (196mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 6:55 am and sunset at 4:29 pm. On the last day of December, in Arcola, Illinois, sunrise is at 7:13 am and sunset at 4:39 pm CST.
Sunshine
The average sunshine in December is 4.6h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 suggests this advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Arcola during December?
What is the average humidity in December in Arcola?
How much does it rain in Arcola in December?
How much does it snow in Arcola in December?
What is the month with the shortest days in Arcola?
What is the average length of the day in December in Arcola?
What time are sunrise and sunset in December in Arcola?
How long on average sun shines in December in Arcola?
What are the months with the lowest UV index in Arcola?
What is the UV index intensity in December in Arcola?
Average temperature in December
Arcola, 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 (33.4°F).
- Average low temperature in December: 28°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Arcola, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Arcola, IL
- Average wind speed in December: 9.9mph
The windiest months (with the highest average wind speed) are January and February (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in December
Arcola, IL
- Average humidity in December: 80%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Arcola, IL
- Average rainfall in December: 1.54"
The wettest month (with the highest rainfall) is April (3.15").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days in December
Arcola, IL
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in December
Arcola, IL
- Average snowfall in December: 1.97"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Arcola, IL
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (8.5 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
Arcola, 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
Arcola, IL
- Average sunshine days in December: 16 days
The months with the most sunshine days are October and November (17.5 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in December
Arcola, 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
Arcola, IL
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Arcola, 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).
Arcola, Illinois, USA
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