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 corresponds with a decrease in average high-temperatures, from November's cool 53.1°F (11.7°C) to a frosty 42.8°F (6°C). Okawville's nighttime temperature during December is consistently averaged at a subzero cold 30.7°F (-0.7°C).Humidity
In December, the average relative humidity in Okawville, Illinois, is 78%.Rainfall
In Okawville, in December, during 9.2 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, there are 166.8 rainfall days, and 37.83" (961mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, September, November and December. In Okawville, in December, snow falls for 4.5 days, with typically accumulated 1.3" (33mm) of snow. Throughout the year, in Okawville, there are 23.2 snowfall days, and 7.87" (200mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:57 am and sunset at 4:37 pm. On the last day of December, in Okawville, sunrise is at 7:15 am and sunset at 4:47 pm CST.
Sunshine
In December, the average sunshine in Okawville is 4.8h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Okawville. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In December, the UV index of 2 transforms into the following advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
Is it cold in Okawville during December?
What is the average humidity in December in Okawville?
How many days does it rain in December in Okawville?
How much does it snow in Okawville in December?
What is the month with the shortest days in Okawville?
How many hours of daylight does Okawville have in December?
What time are sunrise and sunset in December in Okawville?
How many hours of sunshine does Okawville have in December?
What is the month with the lowest UV index in Okawville?
How high is the UV index in December in Okawville?
Average temperature in December
Okawville, IL
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in December
Okawville, IL
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Okawville, IL
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in December
Okawville, IL
- Average humidity in December: 78%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Okawville, IL
- Average rainfall in December: 2.56"
The wettest month (with the highest rainfall) is April (4.45").
The driest month (with the least rainfall) is February (2.01").
Average rainfall days in December
Okawville, IL
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is December (9.2 days).
Average snowfall in December
Okawville, IL
- Average snowfall in December: 1.3"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in December
Okawville, IL
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Okawville, 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 5min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Okawville, IL
- Average sunshine days in December: 17 days
The months with the most sunshine days are October and November (17.5 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in December
Okawville, IL
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Okawville, IL
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Okawville, 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).
Okawville, Illinois, USA
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