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
With the onset of December, Lacon's average high-temperature adjusts, receding from November's frosty 47.3°F (8.5°C) to a cold 35.8°F (2.1°C). During the nights in December, the temperature in Lacon, Illinois, averages to a subzero cold 25.3°F (-3.7°C).Humidity
In December, the average relative humidity is 81%.Rainfall
In Lacon, Illinois, during December, the rain falls for 7.3 days and regularly aggregates up to 1.69" (43mm) of precipitation. Throughout the year, there are 148.8 rainfall days, and 30.94" (786mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Lacon. In Lacon, in December, during 6.9 snowfall days, 2.13" (54mm) of snow is typically accumulated. In Lacon, during the entire year, snow falls for 33.3 days and aggregates up to 14.33" (364mm) 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 Lacon, sunrise is at 7:03 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:39 pm CST.
Sunshine
In Lacon, the average sunshine in December is 4.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 1 in December translates into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
How cold is December in Lacon?
What is the average humidity in December in Lacon?
How much does it rain in Lacon in December?
How many days does it snow in December in Lacon?
What is the month with the shortest days in Lacon?
How many hours of daylight does Lacon have in December?
When is the sunrise / sunset in December in Lacon?
How many hours of sunshine does Lacon have in December?
What are the months with the lowest UV index in Lacon?
What is the UV index reading in December in Lacon?
Average temperature in December
Lacon, IL
- Average high temperature in December: 35.8°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in December: 25.3°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 (17.4°F).
Average pressure in December
Lacon, 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
Lacon, IL
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Lacon, IL
- Average humidity in December: 81%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Lacon, IL
- Average rainfall in December: 1.69"
The wettest month (with the highest rainfall) is May (4.57").
The driest month (with the least rainfall) is January (1.57").
Average rainfall days in December
Lacon, IL
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in December
Lacon, IL
- Average snowfall in December: 2.13"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Lacon, IL
- Average snowfall days in December: 6.9 days
The month with the highest number of snowfall days is January (10.4 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
Lacon, 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 month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Lacon, IL
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in December
Lacon, IL
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Lacon, IL
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in December
Lacon, 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).
Lacon, Illinois, USA
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