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
The commencement of December involves a temperature shift, with the average high-temperature dropping from a cool 52.5°F (11.4°C) in November to a wintry 41.9°F (5.5°C). During the month of December, the temperature generally drops to a low average of 30.4°F (-0.9°C).Humidity
The average relative humidity in December is 78%.Rainfall
In Keyesport, in December, during 6.1 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In Keyesport, during the entire year, the rain falls for 120.1 days and collects up to 15.55" (395mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Keyesport, in December, during 3.4 snowfall days, 0.28" (7mm) of snow is typically accumulated. Throughout the year, there are 16.4 snowfall days, and 2.24" (57mm) of snow is accumulated.Daylight
The month with the shortest days in Keyesport is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:56 am and sunset at 4:35 pm. On the last day of December, in Keyesport, sunrise is at 7:15 am and sunset at 4:45 pm CST.
Sunshine
The average sunshine in December is 4.8h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 2 translates into these guidelines:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
Is December cold in Keyesport?
What is the average humidity in December in Keyesport?
How much does it rain in Keyesport in December?
How much does it snow in Keyesport in December?
What is the month with the shortest days in Keyesport?
What is the average length of the day in December in Keyesport?
What time are sunrise and sunset in December in Keyesport?
How long on average sun shines in December in Keyesport?
What are the months with the lowest UV index in Keyesport?
What is the UV index intensity in December in Keyesport?
Average temperature in December
Keyesport, IL
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in December
Keyesport, 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 (29.93"Hg).
Average wind speed in December
Keyesport, IL
- Average wind speed in December: 9mph
The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in December
Keyesport, IL
- Average humidity in December: 78%
The months with the highest relative humidity are May, July and August (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Keyesport, IL
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is June (2.01").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in December
Keyesport, IL
- Average rainfall days in December: 6.1 days
The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in December
Keyesport, IL
- Average snowfall in December: 0.28"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Keyesport, IL
- Average snowfall days in December: 3.4 days
The month with the highest number of snowfall days is January (5.3 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
Keyesport, 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 30min).
Average sunshine days in December
Keyesport, IL
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is December (22.5 days).
The month with the least sunshine days is June (13.8 days).
Average UV index in December
Keyesport, 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, November and December (UV index 2).
Average cloud cover in December
Keyesport, IL
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in December
Keyesport, 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).
Keyesport, Illinois, USA
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