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 shift from November to December brings a noticeable decrease in the average high-temperature, dropping from a chilly 46.8°F (8.2°C) to a freezing cold 31.3°F (-0.4°C). The low-temperature averages to 19.6°F (-6.9°C) during the nights of December.Humidity
In December, the average relative humidity in McLean is 80%.Rainfall
In McLean, in December, it is raining for 3.3 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, in McLean, there are 115.7 rainfall days, and 19.61" (498mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. December is the month with the most snowfall in McLean. Snow falls for 7.5 days and accumulates 3.23" (82mm) of snow.Daylight
December has the shortest days of the year in McLean, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:40 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:59 am and sunset at 5:07 pm CST.
Sunshine
The average sunshine in December is 4.9h.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 value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: In December, an average UV index of 2 transforms into the following instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in McLean in December?
What is the average humidity in December in McLean?
How much does it rain in McLean in December?
When does it snow the most in McLean?
How much does it snow in McLean in December?
What is the month with the shortest days in McLean?
What is the average length of the day in December in McLean?
When is the sunrise / sunset in December in McLean?
How many hours of sunshine does McLean have in December?
What are the months with the lowest UV index in McLean?
What is the UV index reading in December in McLean?
Average temperature in December
McLean, NE
- Average high temperature in December: 31.3°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in December: 19.6°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in December
McLean, NE
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
McLean, NE
- Average wind speed in December: 11.1mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in December
McLean, NE
- Average humidity in December: 80%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (64%).
Average rainfall in December
McLean, NE
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is May (2.83").
The driest months (with the least rainfall) are February and November (0.59").
Average rainfall days in December
McLean, NE
- Average rainfall days in December: 3.3 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (2.7 days).
Average snowfall in December
McLean, NE
- Average snowfall in December: 3.23"
The month with the highest snowfall is December (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
McLean, NE
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
McLean, NE
- 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 6min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
McLean, NE
- Average sunshine days in December: 21.1 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in December
McLean, NE
- 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
McLean, NE
- Average cloud cover in December: 46
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
McLean, NE
- 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).
McLean, Nebraska, USA
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