December weather forecastAndalusia, IL
December
Weather in December
The first month of the winter, December, is also a wintry month in Andalusia, Illinois, with an average temperature fluctuating between 24.1°F (-4.4°C) and 34.5°F (1.4°C).Temperature
Andalusia in December experiences a subtle temperature decline, with average high-temperatures reducing from a frosty 47.1°F (8.4°C) in November to an icy 34.5°F (1.4°C). During the nights in December, Andalusia experiences a consistent average temperature of 24.1°F (-4.4°C).Humidity
The average relative humidity in December is 81%.Rainfall
December is the month with the least rainfall in Andalusia. Rain falls for 6.6 days and accumulates 0.75" (19mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Andalusia, in December, snow falls for 7.8 days, with typically accumulated 1.42" (36mm) of snow. Throughout the year, there are 35.4 snowfall days, and 8.35" (212mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Andalusia.On the first day of the month, sunrise is at 7:10 am and sunset at 4:34 pm. On the last day of December, in Andalusia, sunrise is at 7:28 am and sunset at 4:43 pm CST.
Sunshine
In December, the average sunshine in Andalusia is 4.4h.UV index
In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, the maximum UV index of 2 suggests this advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Andalusia, IL
- Average high temperature in December: 34.5°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in December
Andalusia, IL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Andalusia, IL
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in December
Andalusia, IL
- Average humidity in December: 81%
The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Andalusia, IL
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in December
Andalusia, IL
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is January (4.2 days).
Average snowfall in December
Andalusia, IL
- Average snowfall in December: 1.42"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Andalusia, IL
- Average snowfall days in December: 7.8 days
The month with the highest number of snowfall days is January (10.3 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
Andalusia, IL
- Average daylight in December: 9h and 12min
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 12min).
- Average sunshine in December: 4h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Andalusia, IL
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in December
Andalusia, IL
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Andalusia, IL
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Andalusia, 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).
