December weather forecast
Ophiem, IL

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Weather in December

December, the first month of the winter in Ophiem, is still a cold month, with an average temperature fluctuating between 24.1°F (-4.4°C) and 34.7°F (1.5°C).

Temperature

Ophiem's December weather features a mild decline in high-temperatures, reducing from a frosty 46.9°F (8.3°C) in November to a wintry 34.7°F (1.5°C). In Ophiem, the average nighttime temperature during December is a freezing cold 24.1°F (-4.4°C).

Humidity

The average relative humidity in December is 81%.

Rainfall

The month with the least rainfall in Ophiem, Illinois, is December, when the rain falls for 7.4 days and typically collects 1.26" (32mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Ophiem. In December, in Ophiem, it is snowing for 7.5 days. Throughout December, 1.97" (50mm) of snow is accumulated. In Ophiem, during the entire year, snow falls for 36.5 days and aggregates up to 13.5" (343mm) 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 the month, sunrise is at 7:08 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:42 pm CST.

Sunshine

The average sunshine in December is 4.3h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Ophiem. 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 daily high UV index of 1 in December translates into this advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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Frequently asked questions

How cold is it in Ophiem in December?

In December, in Ophiem, the average high-temperature is 34.7°F (1.5°C), and the average low-temperature is 24.1°F (-4.4°C). The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in July is estimated at 87.8°F (31°C).

What is the average humidity in December in Ophiem?

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

What is the driest month in Ophiem?

December is the month with the least rainfall in Ophiem, Illinois. Rain falls for 7.4 days and accumulates 1.26" (32mm) of precipitation.

How many days does it rain in December in Ophiem?

In Ophiem, Illinois, during December, the rain falls for 7.4 days and regularly aggregates up to 1.26" (32mm) of precipitation.

How many days does it snow in December in Ophiem?

In Ophiem, Illinois, in December, during 7.5 snowfall days, 1.97" (50mm) of snow is typically accumulated.

What is the month with the shortest days in Ophiem?

With an average of 9h and 18min of daylight, December has the shortest days of the year in Ophiem.

What is the average length of the day in December in Ophiem?

In December, the average day length is 9h and 16min.

What time are sunrise and sunset in December in Ophiem?

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 4:33 pm. On the last day of the month, in Ophiem, Illinois, sunrise is at 7:27 am and sunset at 4:42 pm CST.

How many hours of sunshine does Ophiem have in December?

The average sunshine duration in December is 4.3h.

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

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Ophiem, Illinois.

What is the UV index reading in December in Ophiem?

In Ophiem, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Ophiem, IL

Average temperature in December - Ophiem, IL
  • Average high temperature in December: 34.7°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (28.4°F).

  • Average low temperature in December: 24.1°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 (16.2°F).

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Average pressure in December
Ophiem, IL

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in December
Ophiem, IL

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

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

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Average humidity in December
Ophiem, IL

Average humidity in December - Ophiem, IL
  • Average humidity in December: 81%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in December
Ophiem, IL

Average rainfall in December - Ophiem, IL
  • Average rainfall in December: 1.26"

The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is December (1.26").

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Average rainfall days in December
Ophiem, IL

Average rainfall days in December - Ophiem, IL
  • Average rainfall days in December: 7.4 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (5 days).

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Average snowfall in December
Ophiem, IL

Average snowfall in December - Ophiem, IL
  • Average snowfall in December: 1.97"

The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Ophiem, IL

Average snowfall days in December - Ophiem, IL
  • Average snowfall days in December: 7.5 days

The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are May, June, July and August (0 days).

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Average daylight in December /
Average sunshine in December
Ophiem, IL

Average daylight in December / Average sunshine in December - Ophiem, 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 July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in December
Ophiem, IL

Average sunshine days in December - Ophiem, IL
  • Average sunshine days in December: 17.8 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is May (10.4 days).

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Average UV index in December
Ophiem, IL

Average UV index in December - Ophiem, IL
  • Average UV index in December: 1

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

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Average cloud cover in December
Ophiem, IL

Average cloud cover in December - Ophiem, IL
  • Average cloud cover in December: 54

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in December
Ophiem, IL

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

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