December weather forecastKappa, IL
December
Weather in December
The first month of the winter, December, is also a wintry month in Kappa, Illinois, with an average temperature varying between 25.9°F (-3.4°C) and 36.5°F (2.5°C).Temperature
Kappa, Illinois, in December experiences a subtle temperature decline, with average high-temperatures reducing from a frosty 47.7°F (8.7°C) in November to an icy 36.5°F (2.5°C). Kappa experiences an average low-temperature of 25.9°F (-3.4°C) in the month of December.Humidity
The average relative humidity in December is 81%.Rainfall
In December, in Kappa, the rain falls for 5.9 days. Throughout December, 0.98" (25mm) of precipitation is accumulated. Throughout the year, in Kappa, there are 131.6 rainfall days, and 18.86" (479mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Kappa. In Kappa, during December, snow falls for 5.9 days and regularly aggregates up to 1.26" (32mm) of snow. Throughout the year, there are 30.1 snowfall days, and 9.17" (233mm) of snow is accumulated.Daylight
The month with the shortest days in Kappa is December, with an average of 9h and 18min of daylight.On the first day of December in Kappa, Illinois, sunrise is at 7:01 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:38 pm CST.
Sunshine
In December, the average sunshine in Kappa, Illinois, is 4.3h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. 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
Kappa, IL
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in December: 25.9°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 (18.5°F).
Average pressure in December
Kappa, 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 (29.92"Hg).
Average wind speed in December
Kappa, IL
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Kappa, 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 (71%).
Average rainfall in December
Kappa, IL
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in December
Kappa, IL
- Average rainfall days in December: 5.9 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in December
Kappa, IL
- Average snowfall in December: 1.26"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Kappa, IL
- Average snowfall days in December: 5.9 days
The month with the highest number of snowfall days is January (10.6 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
Kappa, IL
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Kappa, IL
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in December
Kappa, IL
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Kappa, IL
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in December
Kappa, 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).
