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
As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a frosty 44.6°F (7°C) to an icy 32.7°F (0.4°C). During December, Pistakee Highlands witnesses a consistent average low-temperature of 22.8°F (-5.1°C).Humidity
In December, the average relative humidity in Pistakee Highlands is 82%.Rainfall
December is the month with the least rainfall in Pistakee Highlands. Rain falls for 7.9 days and accumulates 1.34" (34mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Pistakee Highlands, in December, during 10.3 snowfall days, 2.6" (66mm) of snow is typically accumulated. In Pistakee Highlands, Illinois, during the entire year, snow falls for 49 days and aggregates up to 16.5" (419mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:03 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:30 pm CST.
Sunshine
In Pistakee Highlands, the average sunshine in December is 4h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Pistakee Highlands, Illinois. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, a daily UV index of 1 turns into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Pistakee Highlands in December?
What is the average humidity in December in Pistakee Highlands?
What is the driest month in Pistakee Highlands?
How many days does it rain in December in Pistakee Highlands?
How many days does it snow in December in Pistakee Highlands?
What is the month with the shortest days in Pistakee Highlands?
What is the average length of the day in December in Pistakee Highlands?
When is the sunrise / sunset in December in Pistakee Highlands?
How many hours of sunshine does Pistakee Highlands have in December?
What is the month with the lowest UV index in Pistakee Highlands?
What is the UV index intensity in December in Pistakee Highlands?
Average temperature in December
Pistakee Highlands, IL
- Average high temperature in December: 32.7°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in December: 22.8°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in December
Pistakee Highlands, IL
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Pistakee Highlands, IL
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Pistakee Highlands, IL
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall in December
Pistakee Highlands, IL
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.34").
Average rainfall days in December
Pistakee Highlands, IL
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in December
Pistakee Highlands, IL
- Average snowfall in December: 2.6"
The month with the highest snowfall is January (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Pistakee Highlands, IL
- Average snowfall days in December: 10.3 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Pistakee Highlands, 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 6min).
- Average sunshine in December: 4h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Pistakee Highlands, IL
- Average sunshine days in December: 15.9 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in December
Pistakee Highlands, IL
- Average UV index in December: 1
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Pistakee Highlands, IL
- Average cloud cover in December: 60
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 31).
Average visibility in December
Pistakee Highlands, IL
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Pistakee Highlands, Illinois, USA
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