December weather forecast
Ellis Grove, IL

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Weather in December

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

Temperature

The shift from November to December corresponds with a decrease in the average high-temperature, down to a chilly 43.7°F (6.5°C) from a cool 53.8°F (12.1°C). Ellis Grove, during December, witnesses an average low-temperature of 31.1°F (-0.5°C).

Humidity

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

Rainfall

In Ellis Grove, during December, the rain falls for 9.1 days and regularly aggregates up to 2.4" (61mm) of precipitation. In Ellis Grove, Illinois, 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 Ellis Grove, Illinois. In Ellis Grove, in December, snow falls for 3 days, with typically accumulated 1.18" (30mm) of snow. In Ellis Grove, during the entire year, snow falls for 16 days and aggregates up to 6.89" (175mm) of snow.

Daylight

The month with the shortest days in Ellis Grove is December, with an average of 9h and 36min of daylight.
On the first day of December in Ellis Grove, 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

In December, the average sunshine is 5h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

How cold does it get in Ellis Grove in December?

Ellis Grove in December has an average high-temperature of 43.7°F (6.5°C) and an average low-temperature of 31.1°F (-0.5°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is evaluated at 98.6°F (37°C).

What is the average humidity in December in Ellis Grove?

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

How much does it rain in Ellis Grove in December?

In December, in Ellis Grove, Illinois, the rain falls for 9.1 days. Throughout December, 2.4" (61mm) of precipitation is accumulated.

How much does it snow in Ellis Grove in December?

In Ellis Grove, Illinois, in December, during 3 snowfall days, 1.18" (30mm) of snow is typically accumulated.

What is the month with the shortest days in Ellis Grove?

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

What is the average length of the day in December in Ellis Grove?

The average day length in December in Ellis Grove is 9h and 35min.

When is the sunrise / sunset in December in Ellis Grove?

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, in Ellis Grove, Illinois, sunrise is at 7:15 am and sunset at 4:50 pm CST.

How many hours of sunshine does Ellis Grove have in December?

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

What is the month with the lowest UV index in Ellis Grove?

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

What is the UV index intensity in December in Ellis Grove?

In Ellis Grove, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unsafe 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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Ellis Grove, Illinois, USA

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