December weather forecast
Pennington Point, IL

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Weather in December

The first month of the winter, December, is still a cold month in Pennington Point, Illinois, with temperature in the range of an average low of 25.7°F (-3.5°C) and an average high of 37°F (2.8°C).

Temperature

Pennington Point observes a minor decrease in the average high-temperature with the arrival of December, falling from November's frosty 48.9°F (9.4°C) to an icy 37°F (2.8°C). Pennington Point's nighttime temperature in December falls to an average of 25.7°F (-3.5°C).

Humidity

The average relative humidity in December is 79%.

Rainfall

In Pennington Point, in December, during 5.6 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Pennington Point, Illinois, during the entire year, the rain falls for 122.7 days and collects up to 17.8" (452mm) of precipitation.

Snowfall

Months with snowfall in Pennington Point are January through April, October through December. In December, in Pennington Point, it is snowing for 4.9 days. Throughout December, 0.79" (20mm) of snow is accumulated. In Pennington Point, during the entire year, snow falls for 25.2 days and aggregates up to 5.47" (139mm) 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, sunrise is at 7:06 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:45 pm CST.

Sunshine

In Pennington Point, the average sunshine in December is 4.6h.

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 estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In December, the maximum UV index of 2 transforms into these recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Frequently asked questions

How cold is December in Pennington Point?

In Pennington Point, in December, the average high-temperature is 37°F (2.8°C), and the average low-temperature is 25.7°F (-3.5°C). The average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, in August is calculated to be 87.8°F (31°C).

What is the average humidity in December in Pennington Point?

In Pennington Point, Illinois, the average relative humidity in December is 79%.

How many days does it rain in December in Pennington Point?

In Pennington Point, in December, during 5.6 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

How much does it snow in Pennington Point in December?

In Pennington Point, in December, snow falls for 4.9 days, with typically accumulated 0.79" (20mm) of snow.

What is the month with the shortest days in Pennington Point?

December has the shortest days of the year in Pennington Point, with an average of 9h and 18min of daylight.

How many hours of daylight does Pennington Point have in December?

In Pennington Point, Illinois, the average day length in December is 9h and 21min.

When is the sunrise / sunset in December in Pennington Point?

On the first day of December in Pennington Point, Illinois, sunrise is at 7:06 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:45 pm CST.

How many hours of sunshine does Pennington Point have in December?

The average sunshine duration in December is 4.6h.

What is the month with the lowest UV index in Pennington Point?

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

What is the UV index reading in December in Pennington Point?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to 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
Pennington Point, IL

Average temperature in December - Pennington Point, IL
  • Average high temperature in December: 37°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19°F).

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Average pressure in December
Pennington Point, IL

Average pressure in December - Pennington Point, IL
  • Average pressure in December: 30.12"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
Pennington Point, IL

Average wind speed in December - Pennington Point, IL
  • Average wind speed in December: 10mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in December
Pennington Point, IL

Average humidity in December - Pennington Point, IL
  • Average humidity in December: 79%

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

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Average rainfall in December
Pennington Point, IL

Average rainfall in December - Pennington Point, IL
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in December
Pennington Point, IL

Average rainfall days in December - Pennington Point, IL
  • Average rainfall days in December: 5.6 days

The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (4.2 days).

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Average snowfall in December
Pennington Point, IL

Average snowfall in December - Pennington Point, IL
  • Average snowfall in December: 0.79"

The month with the highest snowfall is January (1.89").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Pennington Point, IL

Average snowfall days in December - Pennington Point, IL
  • Average snowfall days in December: 4.9 days

The month with the highest number of snowfall days is January (7.6 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
Pennington Point, IL

Average daylight in December / Average sunshine in December - Pennington Point, 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 18min).

  • Average sunshine in December: 4h and 4min

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

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Average sunshine days in December
Pennington Point, IL

Average sunshine days in December - Pennington Point, IL
  • Average sunshine days in December: 20.6 days

The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is June (12.2 days).

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Average UV index in December
Pennington Point, IL

Average UV index in December - Pennington Point, 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
Pennington Point, IL

Average cloud cover in December - Pennington Point, IL
  • Average cloud cover in December: 51

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).

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Average visibility in December
Pennington Point, IL

Average visibility in December - Pennington Point, 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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Pennington Point, Illinois, USA

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