December weather forecast
Weldon, IL

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Weather in December

The first month of the winter, December, is also a wintry month in Weldon, Illinois, with an average temperature varying between 27.3°F (-2.6°C) and 37.6°F (3.1°C).

Temperature

Setting in of December comes with a decrease in the average high-temperature, moving from a chilly 48.9°F (9.4°C) in November to a cold 37.6°F (3.1°C). During the month of December, Weldon anticipates a mean low-temperature of 27.3°F (-2.6°C).

Humidity

In Weldon, the average relative humidity in December is 80%.

Rainfall

The month with the least rainfall in Weldon, Illinois, is December, when the rain falls for 7.6 days and typically collects 1.1" (28mm) of precipitation.

Snowfall

Months with snowfall in Weldon are January through April, November and December. In Weldon, in December, during 5.5 snowfall days, 1.3" (33mm) of snow is typically accumulated. In Weldon, Illinois, during the entire year, snow falls for 27.3 days and aggregates up to 9.09" (231mm) of snow.

Daylight

December has the shortest days of the year in Weldon, Illinois, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 6:58 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:39 pm CST.

Sunshine

In December, the average sunshine in Weldon is 4.4h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Weldon, Illinois. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

How cold is December in Weldon?

The high-temperature in Weldon, Illinois, during December is 37.6°F (3.1°C) and the low-temperature is 27.3°F (-2.6°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in July is calculated to be 87.8°F (31°C).

What is the average humidity in December in Weldon?

In December, the average relative humidity is 80%.

What is the driest month in Weldon?

The month with the least rainfall is December, when the rain falls for 7.6 days and typically collects 1.1" (28mm) of precipitation.

How many days does it rain in December in Weldon?

In Weldon, in December, it is raining for 7.6 days, with typically 1.1" (28mm) of accumulated precipitation.

How many days does it snow in December in Weldon?

In Weldon, Illinois, in December, snow falls for 5.5 days, with typically accumulated 1.3" (33mm) of snow.

What is the month with the shortest days in Weldon?

With an average of 9h and 24min of daylight, December has the shortest days of the year in Weldon.

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

In Weldon, Illinois, the average day length in December is 9h and 22min.

What time are sunrise and sunset in December in Weldon?

In December, on the first day of the month, sunrise is at 6:58 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:39 pm CST.

How long on average sun shines in December in Weldon?

The average sunshine duration in December is 4.4h.

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

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

How high is the UV index in December in Weldon?

The average daily maximum UV index in December in Weldon, Illinois, is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Weldon, IL

Average temperature in December - Weldon, IL
  • Average high temperature in December: 37.6°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in December: 27.3°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 (19.9°F).

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Average pressure in December
Weldon, IL

Average pressure in December - Weldon, 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 (29.92"Hg).

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Average wind speed in December
Weldon, IL

Average wind speed in December - Weldon, IL
  • Average wind speed in December: 10.3mph

The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity in December
Weldon, IL

Average humidity in December - Weldon, IL
  • Average humidity in December: 80%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in December
Weldon, IL

Average rainfall in December - Weldon, IL
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is December (1.1").

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Average rainfall days in December
Weldon, IL

Average rainfall days in December - Weldon, IL
  • Average rainfall days in December: 7.6 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (6.1 days).

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Average snowfall in December
Weldon, IL

Average snowfall in December - Weldon, IL
  • Average snowfall in December: 1.3"

The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Weldon, IL

Average snowfall days in December - Weldon, IL
  • Average snowfall days in December: 5.5 days

The month with the highest number of snowfall days is January (9.6 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
Weldon, IL

Average daylight in December / Average sunshine in December - Weldon, 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 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
Weldon, IL

Average sunshine days in December - Weldon, IL
  • Average sunshine days in December: 18.3 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (10.4 days).

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Average UV index in December
Weldon, IL

Average UV index in December - Weldon, IL
  • Average UV index in December: 2

The months with the highest UV index are June and July (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
Weldon, IL

Average cloud cover in December - Weldon, IL
  • Average cloud cover in December: 53

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 30).

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Average visibility in December
Weldon, IL

Average visibility in December - Weldon, IL
  • Average visibility in December: 6mi

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

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Weldon, Illinois, USA

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