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
Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a cool 52.2°F (11.2°C) to a cold 42.1°F (5.6°C). During the nights in December, Saint Francisville experiences a consistent average temperature of 30.9°F (-0.6°C).Humidity
In December, the average relative humidity is 79%.Rainfall
In Saint Francisville, in December, during 4.9 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. In Saint Francisville, during the entire year, the rain falls for 89 days and collects up to 7.6" (193mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In December, it is snowing for 2.3 days. Throughout December, 0.12" (3mm) of snow is accumulated. In Saint Francisville, during the entire year, snow falls for 13.3 days and aggregates up to 0.91" (23mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December in Saint Francisville, sunrise is at 6:49 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 4:39 pm CST.
Sunshine
The month with the least sunshine in Saint Francisville is December, with an average of 4.5h of sunshine.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 estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: An average UV index of 2 in December transforms into this advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
How cold does it get in Saint Francisville in December?
What is the average humidity in December in Saint Francisville?
How much does it rain in Saint Francisville in December?
How much does it snow in Saint Francisville in December?
What is the month with the shortest days in Saint Francisville?
What is the average length of the day in December in Saint Francisville?
What time are sunrise and sunset in December in Saint Francisville?
What is the month with the least sunshine in Saint Francisville?
How many hours of sunshine does Saint Francisville have in December?
What is the month with the lowest UV index in Saint Francisville?
What is the UV index intensity in December in Saint Francisville?
Average temperature in December
Saint Francisville, IL
- Average high temperature in December: 42.1°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 (36.9°F).
- Average low temperature in December: 30.9°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in December
Saint Francisville, 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 (29.94"Hg).
Average wind speed in December
Saint Francisville, IL
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is February (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in December
Saint Francisville, IL
- Average humidity in December: 79%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Saint Francisville, IL
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is April (0.91").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in December
Saint Francisville, IL
- Average rainfall days in December: 4.9 days
The month with the highest number of rainy days is May (10.8 days).
The month with the least rainy days is December (4.9 days).
Average snowfall in December
Saint Francisville, IL
- Average snowfall in December: 0.12"
The month with the highest snowfall is March (0.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Saint Francisville, IL
- Average snowfall days in December: 2.3 days
The month with the highest number of snowfall days is February (4.2 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
Saint Francisville, 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 3min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).
Average sunshine days in December
Saint Francisville, IL
- Average sunshine days in December: 23.5 days
The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is May (16.9 days).
Average UV index in December
Saint Francisville, 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
Saint Francisville, IL
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in December
Saint Francisville, 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).
Saint Francisville, Illinois, USA
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