December weather forecast
Ellis Grove, IL

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Weather in December

The first month of the winter, December, is also a frosty month in Ellis Grove, Illinois, with an average temperature ranging between max 43.7°F (6.5°C) and min 31.1°F (-0.5°C).

Temperature

Ellis Grove's transition into December involves a shift in temperature, receding from a fresh 53.8°F (12.1°C) in November to a chilly 43.7°F (6.5°C). In December, Ellis Grove's temperature tends to fall to an average low of 31.1°F (-0.5°C) during the night.

Humidity

In Ellis Grove, the average relative humidity in December is 77%.

Rainfall

In Ellis Grove, in December, it is raining for 9.1 days, with typically 2.4" (61mm) of accumulated precipitation. In Ellis Grove, during the entire year, the rain falls for 156.4 days and collects up to 34.25" (870mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In December, it is snowing for 3 days. Throughout December, 1.18" (30mm) of snow is accumulated. Throughout the year, in Ellis Grove, there are 16 snowfall days, and 6.89" (175mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 36min of daylight.
On the first day of December, sunrise is at 6:57 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:50 pm CST.

Sunshine

The average sunshine in December is 5h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

In Ellis Grove, 43.7°F (6.5°C) is the average high-temperature and 31.1°F (-0.5°C) is the average low-temperature during December. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in August is computed to be 98.6°F (37°C).

What is the average humidity in December?

The average relative humidity in December is 77%.

How much does it rain in December?

In Ellis Grove, during December, the rain falls for 9.1 days and regularly aggregates up to 2.4" (61mm) of precipitation.

How many days does it snow in December?

In December, it is snowing for 3 days. Throughout December, 1.18" (30mm) of snow is accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 36min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 35min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:57 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:50 pm CST.

How long on average sun shines in December in Ellis Grove?

In Ellis Grove, the average sunshine duration in December is 5h.

What is the month with the lowest UV index?

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in December?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Ellis Grove, IL

Average temperature in December - Ellis Grove, IL
  • Average high temperature in December: 43.7°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in December: 31.1°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in December
Ellis Grove, IL

Average pressure in December - Ellis Grove, IL
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Ellis Grove, IL

Average wind speed in December - Ellis Grove, IL
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Ellis Grove, IL

Average humidity in December - Ellis Grove, IL
  • Average humidity in December: 77%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in December
Ellis Grove, IL

Average rainfall in December - Ellis Grove, IL
  • Average rainfall in December: 2.4"

The wettest month (with the highest rainfall) is April (4.13").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in December
Ellis Grove, IL

Average rainfall days in December - Ellis Grove, IL
  • Average rainfall days in December: 9.1 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.9 days).

Average snowfall in December
Ellis Grove, IL

Average snowfall in December - Ellis Grove, IL
  • Average snowfall in December: 1.18"

The month with the highest snowfall is February (2.56").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Ellis Grove, IL

Average snowfall days in December - Ellis Grove, IL
  • Average snowfall days in December: 3 days

The month with the highest number of snowfall days is February (5.2 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
Ellis Grove, IL

Average daylight in December / Average sunshine in December - Ellis Grove, IL
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 5h and 0min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in December
Ellis Grove, IL

Average sunshine days in December - Ellis Grove, IL
  • Average sunshine days in December: 18.7 days

The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is July (9.8 days).

Average UV index in December
Ellis Grove, IL

Average UV index in December - Ellis Grove, IL
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in December
Ellis Grove, IL

Average cloud cover in December - Ellis Grove, IL
  • Average cloud cover in December: 47

The months with the most cloud cover are January and February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 27).

Average visibility in December
Ellis Grove, IL

Average visibility in December - Ellis Grove, IL
  • 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).

Ellis Grove, Illinois, USA

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