December weather forecast
Ursa, IL

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Weather in December

The first month of the winter, December, is also a wintry month in Ursa, Illinois, with an average temperature fluctuating between 26.6°F (-3°C) and 38.7°F (3.7°C).

Temperature

With the onset of December, Ursa experiences a modest temperature adjustment, with the average high-temperature receding from a fresh 50.4°F (10.2°C) in November to a cold 38.7°F (3.7°C). During December, Ursa consistently records a temperature low averaging a subzero cold 26.6°F (-3°C).

Humidity

In December, the average relative humidity is 77%.

Rainfall

In Ursa, Illinois, in December, it is raining for 6.5 days, with typically 1.42" (36mm) of accumulated precipitation. In Ursa, during the entire year, the rain falls for 137.5 days and collects up to 27.68" (703mm) of precipitation.

Snowfall

Months with snowfall in Ursa are January through April, October through December. In Ursa, during December, snow falls for 5.3 days and regularly aggregates up to 2.05" (52mm) of snow. Throughout the year, there are 28.4 snowfall days, and 12.44" (316mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year in Ursa.
On the first day of the month, sunrise is at 7:08 am and sunset at 4:40 pm. On the last day of December, in Ursa, Illinois, sunrise is at 7:27 am and sunset at 4:50 pm CST.

Sunshine

In December, the average sunshine is 4.9h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 2 during December leads to these advisories:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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Frequently asked questions

Is it cold in Ursa during December?

December temperatures in Ursa, Illinois, vary between a high-temperature of 38.7°F (3.7°C) and a low-temperature of 26.6°F (-3°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 91.4°F (33°C).

What is the average humidity in December in Ursa?

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

How much does it rain in Ursa in December?

In Ursa, Illinois, in December, during 6.5 rainfall days, 1.42" (36mm) of precipitation is typically accumulated.

How many days does it snow in December in Ursa?

In Ursa, Illinois, during December, snow falls for 5.3 days and regularly aggregates up to 2.05" (52mm) of snow.

What is the month with the shortest days in Ursa?

The month with the shortest days in Ursa, Illinois, is December, with an average of 9h and 24min of daylight.

How many hours of daylight does Ursa have in December?

In December, the average day length is 9h and 23min.

What time are sunrise and sunset in December in Ursa?

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 4:40 pm. On the last day of the month, in Ursa, Illinois, sunrise is at 7:27 am and sunset at 4:50 pm CST.

How many hours of sunshine does Ursa have in December?

The average sunshine duration in December in Ursa, Illinois, is 4.9h.

What is the month with the lowest UV index in Ursa?

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

What is the UV index reading in December in Ursa?

The average daily maximum UV index in December in Ursa, Illinois, is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Ursa, IL

Average temperature in December - Ursa, IL
  • Average high temperature in December: 38.7°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in December: 26.6°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 (20.1°F).

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Average pressure in December
Ursa, IL

Average pressure in December - Ursa, IL
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in December
Ursa, IL

Average wind speed in December - Ursa, IL
  • Average wind speed in December: 9.7mph

The windiest months (with the highest average wind speed) are January and February (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

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Average humidity in December
Ursa, IL

Average humidity in December - Ursa, IL
  • Average humidity in December: 77%

The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in December
Ursa, IL

Average rainfall in December - Ursa, IL
  • Average rainfall in December: 1.42"

The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is January (1.26").

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Average rainfall days in December
Ursa, IL

Average rainfall days in December - Ursa, IL
  • Average rainfall days in December: 6.5 days

The months with the highest number of rainy days are May and June (17.3 days).
The month with the least rainy days is January (5.3 days).

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Average snowfall in December
Ursa, IL

Average snowfall in December - Ursa, IL
  • Average snowfall in December: 2.05"

The month with the highest snowfall is January (4.21").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Ursa, IL

Average snowfall days in December - Ursa, IL
  • Average snowfall days in December: 5.3 days

The month with the highest number of snowfall days is January (9.3 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
Ursa, IL

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in December
Ursa, IL

Average sunshine days in December - Ursa, IL
  • Average sunshine days in December: 19.5 days

The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is June (10.1 days).

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Average UV index in December
Ursa, IL

Average UV index in December - Ursa, 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).

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Average cloud cover in December
Ursa, IL

Average cloud cover in December - Ursa, IL
  • Average cloud cover in December: 48

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in December
Ursa, IL

Average visibility in December - Ursa, 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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Ursa, Illinois, USA

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