December weather forecast
East Galesburg, IL

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Weather in December

December, the first month of the winter in East Galesburg, is also an icy month, with an average temperature fluctuating between 24.6°F (-4.1°C) and 35.4°F (1.9°C).

Temperature

The arrival of December corresponds with a shift in temperature, down from a frosty 47.5°F (8.6°C) in November to a wintry 35.4°F (1.9°C). An average low-temperature of 24.6°F (-4.1°C) is expected in East Galesburg during December.

Humidity

In East Galesburg, the average relative humidity in December is 81%.

Rainfall

January and December are months with the least rain when the rain falls for 4.5 days and typically aggregates up to 0.47" (12mm) of rain.

Snowfall

Months with snowfall in East Galesburg, Illinois, are January through April, October through December. In East Galesburg, during December, snow falls for 6 days and regularly aggregates up to 0.43" (11mm) of snow. In East Galesburg, during the entire year, snow falls for 28 days and aggregates up to 4.53" (115mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of December in East Galesburg, sunrise is at 7:07 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:43 pm CST.

Sunshine

The average sunshine in December is 4.4h.

UV index

The month with the lowest UV index in East Galesburg is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 1 suggests these recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Frequently asked questions

How cold is December in East Galesburg?

In December, in East Galesburg, the average high-temperature is 35.4°F (1.9°C), and the average low-temperature is 24.6°F (-4.1°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in August is estimated at 86°F (30°C).

What is the average humidity in December in East Galesburg?

The average relative humidity in December is 81%.

What is the driest month in East Galesburg?

The months with the least rainfall in East Galesburg, Illinois, are January and December Rain falls for 4.5 days and accumulates 0.47" (12mm) of rain.

How much does it rain in East Galesburg in December?

In East Galesburg, in December, during 4.5 rainfall days, 0.47" (12mm) of precipitation is typically accumulated.

How many days does it snow in December in East Galesburg?

In December, in East Galesburg, it is snowing for 6 days. Throughout December, 0.43" (11mm) of snow is accumulated.

What is the month with the shortest days in East Galesburg?

December has the shortest days of the year in East Galesburg, Illinois, with an average of 9h and 18min of daylight.

What is the average length of the day in December in East Galesburg?

In East Galesburg, the average day length in December is 9h and 17min.

When are sunrise and sunset in December in East Galesburg?

On the first day of December in East Galesburg, sunrise is at 7:07 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:43 pm CST.

How many hours of sunshine does East Galesburg have in December?

In December, the average sunshine duration in East Galesburg is 4.4h.

What is the month with the lowest UV index in East Galesburg?

December is the month with the lowest UV index in East Galesburg, with an average maximum UV index of 1.

How high is the UV index in December in East Galesburg?

In December, the average daily maximum UV index in East Galesburg, Illinois, is 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
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
East Galesburg, IL

Average temperature in December - East Galesburg, IL
  • Average high temperature in December: 35.4°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.5°F).

  • Average low temperature in December: 24.6°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).

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Average pressure in December
East Galesburg, IL

Average pressure in December - East Galesburg, IL
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
East Galesburg, IL

Average wind speed in December - East Galesburg, IL
  • Average wind speed in December: 9.9mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

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Average humidity in December
East Galesburg, IL

Average humidity in December - East Galesburg, IL
  • Average humidity in December: 81%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in December
East Galesburg, IL

Average rainfall in December - East Galesburg, IL
  • Average rainfall in December: 0.47"

The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are January and December (0.47").

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Average rainfall days in December
East Galesburg, IL

Average rainfall days in December - East Galesburg, IL
  • Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is February (3.9 days).

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Average snowfall in December
East Galesburg, IL

Average snowfall in December - East Galesburg, IL
  • Average snowfall in December: 0.43"

The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
East Galesburg, IL

Average snowfall days in December - East Galesburg, IL
  • Average snowfall days in December: 6 days

The month with the highest number of snowfall days is January (8.8 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
East Galesburg, IL

Average daylight in December / Average sunshine in December - East Galesburg, IL
  • Average daylight in December: 9h and 2min

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 18min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in December
East Galesburg, IL

Average sunshine days in December - East Galesburg, IL
  • Average sunshine days in December: 21.6 days

The month with the most sunshine days is December (21.6 days).
The month with the least sunshine days is June (12.4 days).

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Average UV index in December
East Galesburg, IL

Average UV index in December - East Galesburg, IL
  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
East Galesburg, IL

Average cloud cover in December - East Galesburg, IL
  • Average cloud cover in December: 54

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).

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Average visibility in December
East Galesburg, IL

Average visibility in December - East Galesburg, IL
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).

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East Galesburg, Illinois, USA

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