December weather forecast
Oneida, IL

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Weather in December

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

Temperature

Oneida's progression into December involves a drop in the average high-temperature, receding from a frosty 47.5°F (8.6°C) in November to a wintry 35.4°F (1.9°C). During December, the nighttime temperature in Oneida, Illinois, averages to a subzero cold 24.6°F (-4.1°C).

Humidity

The average relative humidity in December in Oneida is 81%.

Rainfall

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

Snowfall

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

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:33 pm. On the last day of December, in Oneida, sunrise is at 7:25 am and sunset at 4:42 pm CST.

Sunshine

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

UV index

December is the month with the lowest UV index in Oneida, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, the maximum UV index of 1 suggests these recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Oneida in December?

The average high-temperature and low-temperature during December are 35.4°F (1.9°C) and 24.6°F (-4.1°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is estimated at 86°F (30°C).

What is the average humidity in December in Oneida?

The average relative humidity in December is 81%.

What is the driest month in Oneida?

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

How much does it rain in Oneida in December?

In December, in Oneida, Illinois, the rain falls for 4.5 days. Throughout December, 0.47" (12mm) of precipitation is accumulated.

How many days does it snow in December in Oneida?

In Oneida, during December, snow falls for 6 days and regularly aggregates up to 0.43" (11mm) of snow.

What is the month with the shortest days in Oneida?

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

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

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

When are sunrise and sunset in December in Oneida?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:33 pm. On the last day of the month, in Oneida, Illinois, sunrise is at 7:25 am and sunset at 4:42 pm CST.

How many hours of sunshine does Oneida have in December?

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

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

With an average maximum UV index of 1, December is the month with the lowest UV index.

How high is the UV index in December in Oneida?

The average daily maximum UV index in December in Oneida, Illinois, is 1. 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
Oneida, IL

Average temperature in December - Oneida, 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).

Average pressure in December
Oneida, IL

Average pressure in December - Oneida, 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).

Average wind speed in December
Oneida, IL

Average wind speed in December - Oneida, 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).

Average humidity in December
Oneida, IL

Average humidity in December - Oneida, 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%).

Average rainfall in December
Oneida, IL

Average rainfall in December - Oneida, 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").

Average rainfall days in December
Oneida, IL

Average rainfall days in December - Oneida, 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).

Average snowfall in December
Oneida, IL

Average snowfall in December - Oneida, 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").

Average snowfall days in December
Oneida, IL

Average snowfall days in December - Oneida, 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).

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

Average daylight in December / Average sunshine in December - Oneida, 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).

Average sunshine days in December
Oneida, IL

Average sunshine days in December - Oneida, 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).

Average UV index in December
Oneida, IL

Average UV index in December - Oneida, 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).

Average cloud cover in December
Oneida, IL

Average cloud cover in December - Oneida, 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).

Average visibility in December
Oneida, IL

Average visibility in December - Oneida, 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).

Oneida, Illinois, USA

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