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 beginning of December, the average high-temperature shows a decrease, transitioning from a fresh 50.9°F (10.5°C) in November to a wintry 39°F (3.9°C). During the month of December, the nighttime temperature in New Salem falls to an average of 27.9°F (-2.3°C).Humidity
The average relative humidity in December in New Salem is 77%.Rainfall
In New Salem, during December, the rain falls for 7 days and regularly aggregates up to 0.87" (22mm) of precipitation. In New Salem, during the entire year, the rain falls for 128.8 days and collects up to 18.35" (466mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in New Salem, Illinois. In December, it is snowing for 4.2 days. Throughout December, 0.79" (20mm) of snow is accumulated. In New Salem, Illinois, during the entire year, snow falls for 21.9 days and aggregates up to 5.67" (144mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:05 am and sunset at 4:39 pm. On the last day of December, in New Salem, sunrise is at 7:24 am and sunset at 4:49 pm CST.
Sunshine
In New Salem, the average sunshine in December is 4.8h.UV index
The months with the lowest UV index in New Salem are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 2 during December translates into these guidelines:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
How cold does it get in New Salem in December?
What is the average humidity in December in New Salem?
How much does it rain in New Salem in December?
How much does it snow in New Salem in December?
What is the month with the shortest days in New Salem?
How many hours of daylight does New Salem have in December?
What time are sunrise and sunset in December in New Salem?
How many hours of sunshine does New Salem have in December?
What are the months with the lowest UV index in New Salem?
How high is the UV index in December in New Salem?
Average temperature in December
New Salem, IL
- Average high temperature in December: 39°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in December: 27.9°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
New Salem, IL
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
New Salem, IL
- Average wind speed in December: 9.4mph
The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in December
New Salem, IL
- Average humidity in December: 77%
The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
New Salem, IL
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in December
New Salem, IL
- Average rainfall days in December: 7 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in December
New Salem, IL
- Average snowfall in December: 0.79"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
New Salem, IL
- Average snowfall days in December: 4.2 days
The month with the highest number of snowfall days is January (6.3 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
New Salem, IL
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 4h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
New Salem, IL
- Average sunshine days in December: 20.7 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in December
New Salem, 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
New Salem, IL
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility in December
New Salem, 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).
New Salem, Illinois, USA
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