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 average high-temperature drops in December, from November's frosty 46.6°F (8.1°C) to an icy 34.5°F (1.4°C). During the month of December, the temperature generally drops to a low average of 24.1°F (-4.4°C).Humidity
The average relative humidity in December is 82%.Rainfall
The months with the least rainfall are January, February, November and December Rain falls for 4.6 days and accumulates 0.51" (13mm) of rain.Snowfall
Months with snowfall are January through April, October through December. In Troy Grove, during December, snow falls for 6 days and regularly aggregates up to 0.39" (10mm) of snow. Throughout the year, in Troy Grove, there are 29.3 snowfall days, and 3.86" (98mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:03 am and sunset at 4:27 pm. On the last day of December, in Troy Grove, sunrise is at 7:22 am and sunset at 4:36 pm CST.
Sunshine
In December, the average sunshine in Troy Grove is 4.1h.UV index
The months with the lowest UV index in Troy Grove, Illinois, are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
How cold is it in Troy Grove in December?
What is the average humidity in December in Troy Grove?
What is the driest month in Troy Grove?
How much does it rain in Troy Grove in December?
How much does it snow in Troy Grove in December?
What is the month with the shortest days in Troy Grove?
What is the average length of the day in December in Troy Grove?
What time are sunrise and sunset in December in Troy Grove?
How long on average sun shines in December in Troy Grove?
What are the months with the lowest UV index in Troy Grove?
How high is the UV index in December in Troy Grove?
Average temperature in December
Troy Grove, IL
- Average high temperature in December: 34.5°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in December: 24.1°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 (16.7°F).
Average pressure in December
Troy Grove, 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
Troy Grove, IL
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Troy Grove, 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 (73%).
Average rainfall in December
Troy Grove, IL
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is May (1.42").
The driest months (with the least rainfall) are January, February, November and December (0.51").
Average rainfall days in December
Troy Grove, IL
- Average rainfall days in December: 4.6 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in December
Troy Grove, IL
- Average snowfall in December: 0.39"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Troy Grove, IL
- Average snowfall days in December: 6 days
The month with the highest number of snowfall days is January (8.6 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
Troy Grove, IL
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Troy Grove, IL
- Average sunshine days in December: 21.8 days
The month with the most sunshine days is December (21.8 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in December
Troy Grove, 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
Troy Grove, IL
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in December
Troy Grove, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Troy Grove, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location
