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 weather is marked by a drop in the average high-temperature, falling from a fresh 50.7°F (10.4°C) in November to a cold 39.6°F (4.2°C). During December, the average low-temperature in Tower Hill is a freezing cold 28.4°F (-2°C).Humidity
In Tower Hill, the average relative humidity in December is 78%.Rainfall
February and December are months with the least rain when the rain falls for 7.5 days and typically aggregates up to 0.98" (25mm) of rain.Snowfall
January through April, November and December are months with snowfall in Tower Hill. In Tower Hill, in December, during 4.3 snowfall days, 1.22" (31mm) of snow is typically accumulated. Throughout the year, there are 21.4 snowfall days, and 5.2" (132mm) of snow is accumulated.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 6:57 am and sunset at 4:32 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:42 pm CST.
Sunshine
In Tower Hill, Illinois, the average sunshine in December is 4.6h.UV index
The months with the lowest UV index in Tower Hill 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: A maximum UV index of 2 in December translates into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold is it in Tower Hill in December?
What is the average humidity in December in Tower Hill?
What is the driest month in Tower Hill?
How much does it rain in Tower Hill in December?
How many days does it snow in December in Tower Hill?
What is the month with the shortest days in Tower Hill?
What is the average length of the day in December in Tower Hill?
What time are sunrise and sunset in December in Tower Hill?
How many hours of sunshine does Tower Hill have in December?
When is the lowest UV index in Tower Hill?
What is the UV index intensity in December in Tower Hill?
Average temperature in December
Tower Hill, IL
- Average high temperature in December: 39.6°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 28.4°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in December
Tower Hill, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Tower Hill, IL
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in December
Tower Hill, IL
- Average humidity in December: 78%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Tower Hill, IL
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are February and December (0.98").
Average rainfall days in December
Tower Hill, IL
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in December
Tower Hill, IL
- Average snowfall in December: 1.22"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Tower Hill, IL
- Average snowfall days in December: 4.3 days
The months with the highest number of snowfall days are January and February (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
Tower Hill, 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 4min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Tower Hill, IL
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is January (20.2 days).
The month with the least sunshine days is May (13.1 days).
Average UV index in December
Tower Hill, 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
Tower Hill, IL
- Average cloud cover in December: 52
The months with the most cloud cover are January and February (Cloud cover 54).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in December
Tower Hill, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Tower Hill, Illinois, USA
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