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 onset brings a reduction in the average high-temperature, from a fresh 51.1°F (10.6°C) in November to a cold 40.3°F (4.6°C). Throughout the month of December, Stewardson observes an average nighttime temperature of 29.1°F (-1.6°C).Humidity
In Stewardson, Illinois, the average relative humidity in December is 79%.Rainfall
In Stewardson, during December, the rain falls for 8.6 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, in Stewardson, there are 135.9 rainfall days, and 21.89" (556mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 3.5 days. Throughout December, 1.14" (29mm) of snow is accumulated. Throughout the year, there are 17.7 snowfall days, and 4.17" (106mm) of snow is accumulated.Daylight
The month with the shortest days in Stewardson is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:55 am and sunset at 4:31 pm. On the last day of December, in Stewardson, sunrise is at 7:14 am and sunset at 4:41 pm CST.
Sunshine
In Stewardson, the average sunshine in December is 4.6h.UV index
The months with the lowest UV index in Stewardson are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Enhance your sun protection with tightly woven, yet airy clothing. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
How cold does it get in Stewardson in December?
What is the average humidity in December in Stewardson?
How much does it rain in Stewardson in December?
How many days does it snow in December in Stewardson?
What is the month with the shortest days in Stewardson?
How many hours of daylight does Stewardson have in December?
What time are sunrise and sunset in December in Stewardson?
How long on average sun shines in December in Stewardson?
When is the lowest UV index in Stewardson?
What is the UV index reading in December in Stewardson?
Average temperature in December
Stewardson, IL
- Average high temperature in December: 40.3°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 29.1°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average pressure in December
Stewardson, 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
Stewardson, IL
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in December
Stewardson, IL
- Average humidity in December: 79%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Stewardson, IL
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is April (2.83").
The driest month (with the least rainfall) is February (1.06").
Average rainfall days in December
Stewardson, IL
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in December
Stewardson, IL
- Average snowfall in December: 1.14"
The month with the highest snowfall is January (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Stewardson, IL
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is February (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
Stewardson, IL
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 4min
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 18min).
Average sunshine days in December
Stewardson, IL
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is May (12.9 days).
Average UV index in December
Stewardson, IL
- Average UV index in December: 2
The months with the highest UV index are 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
Stewardson, IL
- Average cloud cover in December: 51
The months with the most cloud cover are January and February (Cloud cover 53).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in December
Stewardson, 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).
Stewardson, Illinois, USA
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