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 involves a decrease in temperature, down from a chilly 45.5°F (7.5°C) in November to an icy 33.1°F (0.6°C). Nachusa records an average nighttime low of 23.2°F (-4.9°C) in December.Humidity
The average relative humidity in December in Nachusa is 83%.Rainfall
In December, the rain falls for 7.6 days. Throughout December, 1.61" (41mm) of precipitation is accumulated. Throughout the year, in Nachusa, there are 151 rainfall days, and 31.06" (789mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 8.9 days. Throughout December, 2.64" (67mm) of snow is accumulated. Throughout the year, in Nachusa, there are 43.4 snowfall days, and 16.06" (408mm) of snow is accumulated.Daylight
The month with the shortest days in Nachusa is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:06 am and sunset at 4:27 pm. On the last day of December, in Nachusa, sunrise is at 7:24 am and sunset at 4:36 pm CST.
Sunshine
In December, the average sunshine in Nachusa is 4h.UV index
The months with the lowest UV index in Nachusa, Illinois, are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 1 in December leads to these guidelines:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
How cold is December in Nachusa?
What is the average humidity in December in Nachusa?
How much does it rain in Nachusa in December?
How much does it snow in Nachusa in December?
What is the month with the shortest days in Nachusa?
What is the average length of the day in December in Nachusa?
What time are sunrise and sunset in December in Nachusa?
How many hours of sunshine does Nachusa have in December?
What is the month with the lowest UV index in Nachusa?
What is the UV index reading in December in Nachusa?
Average temperature in December
Nachusa, IL
- Average high temperature in December: 33.1°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in December: 23.2°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in December
Nachusa, IL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Nachusa, IL
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in December
Nachusa, IL
- Average humidity in December: 83%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Nachusa, IL
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is May (4.65").
The driest months (with the least rainfall) are January and February (1.57").
Average rainfall days in December
Nachusa, IL
- Average rainfall days in December: 7.6 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in December
Nachusa, IL
- Average snowfall in December: 2.64"
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Nachusa, IL
- Average snowfall days in December: 8.9 days
The month with the highest number of snowfall days is January (12.4 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
Nachusa, IL
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Nachusa, IL
- Average sunshine days in December: 16 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is June (9.7 days).
Average UV index in December
Nachusa, IL
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Nachusa, IL
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in December
Nachusa, IL
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Nachusa, Illinois, USA
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