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
December's arrival comes with a decrease in the average high-temperature, moving from a chilly 47.1°F (8.4°C) in November to a wintry 34.7°F (1.5°C). December in Lafayette witnesses an average low-temperature hovering around a freezing cold 24.1°F (-4.4°C).Humidity
The average relative humidity in December in Lafayette, Illinois, is 82%.Rainfall
The months with the least rainfall are January and December Rain falls for 7.9 days and accumulates 1.42" (36mm) of rain.Snowfall
January through April, October through December are months with snowfall. In Lafayette, Illinois, in December, during 7.3 snowfall days, 1.97" (50mm) of snow is typically accumulated. In Lafayette, during the entire year, snow falls for 37 days and aggregates up to 12.91" (328mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December in Lafayette, sunrise is at 7:06 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:41 pm CST.
Sunshine
The average sunshine in December is 4.2h.UV index
The average daily maximum UV index in December in Lafayette is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 2 during December translates into these guidelines:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
How cold is it in Lafayette in December?
What is the average humidity in December in Lafayette?
What is the driest month in Lafayette?
How much does it rain in Lafayette in December?
How much does it snow in Lafayette in December?
What is the month with the shortest days in Lafayette?
What is the average length of the day in December in Lafayette?
What time are sunrise and sunset in December in Lafayette?
How many hours of sunshine does Lafayette have in December?
How high is the UV index in December in Lafayette?
Average temperature in December
Lafayette, IL
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Lafayette, IL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Lafayette, IL
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Lafayette, IL
- Average humidity in December: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Lafayette, IL
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.42").
Average rainfall days in December
Lafayette, IL
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in December
Lafayette, IL
- Average snowfall in December: 1.97"
The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Lafayette, IL
- Average snowfall days in December: 7.3 days
The month with the highest number of snowfall days is January (11.4 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
Lafayette, IL
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Lafayette, IL
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in December
Lafayette, 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
Lafayette, IL
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in December
Lafayette, 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).
Lafayette, Illinois, USA
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