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
A decrease in the average high-temperature is observed during December, shifting from a frosty 47.1°F (8.4°C) in November to an icy 35.1°F (1.7°C). Naplate experiences a mean low-temperature of 25°F (-3.9°C) during December.Humidity
In Naplate, the average relative humidity in December is 82%.Rainfall
In December, in Naplate, the rain falls for 8.5 days. Throughout December, 1.93" (49mm) of precipitation is accumulated. In Naplate, during the entire year, the rain falls for 166.3 days and collects up to 35.35" (898mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Naplate, in December, snow falls for 9.1 days, with typically accumulated 2.72" (69mm) of snow. In Naplate, during the entire year, snow falls for 43.4 days and aggregates up to 17.76" (451mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:26 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:36 pm CST.
Sunshine
In December, the average sunshine in Naplate is 4.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold is it in Naplate in December?
What is the average humidity in December in Naplate?
How many days does it rain in December in Naplate?
How many days does it snow in December in Naplate?
What is the month with the shortest days in Naplate?
What is the average length of the day in December in Naplate?
When is the sunrise / sunset in December in Naplate?
How long on average sun shines in December in Naplate?
What is the month with the lowest UV index in Naplate?
What is the UV index intensity in December in Naplate?
Average temperature in December
Naplate, IL
- Average high temperature in December: 35.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in December: 25°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in December
Naplate, IL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Naplate, IL
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Naplate, IL
- Average humidity in December: 82%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Naplate, IL
- Average rainfall in December: 1.93"
The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in December
Naplate, IL
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (19.9 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in December
Naplate, IL
- Average snowfall in December: 2.72"
The month with the highest snowfall is February (5.08").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Naplate, IL
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (12.9 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
Naplate, IL
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Naplate, IL
- Average sunshine days in December: 15.3 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in December
Naplate, 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
Naplate, IL
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in December
Naplate, 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).
Naplate, Illinois, USA
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