December weather forecast
Oakland, IL

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Weather in December

The first month of the winter, December, is also an icy month in Oakland, Illinois, with an average temperature ranging between min 28°F (-2.2°C) and max 38.5°F (3.6°C).

Temperature

Onset of December witnesses a reduction in the average high-temperature, falling from a frosty 49.6°F (9.8°C) in November to an icy 38.5°F (3.6°C). Throughout December, an average nighttime temperature of 28°F (-2.2°C) is experienced.

Humidity

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

Rainfall

In Oakland, during December, the rain falls for 9.3 days and regularly aggregates up to 1.54" (39mm) of precipitation. In Oakland, during the entire year, the rain falls for 151.5 days and collects up to 25.71" (653mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Oakland, during December, snow falls for 6.5 days and regularly aggregates up to 1.97" (50mm) of snow. In Oakland, during the entire year, snow falls for 28.3 days and aggregates up to 7.72" (196mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 6:54 am and sunset at 4:28 pm. On the last day of December, sunrise is at 7:12 am and sunset at 4:38 pm CST.

Sunshine

In Oakland, the average sunshine in December is 4.6h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index, 2 during December, leads to the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Direct Sun exposure should be minimized especially during midday when radiation is most intense. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

The high-temperature, in December, in Oakland, records 38.5°F (3.6°C), while the low-temperature is 28°F (-2.2°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 86°F (30°C).

What is the average humidity in December?

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

How many days does it rain in December?

In Oakland, Illinois, in December, during 9.3 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

How much does it snow in December?

In Oakland, in December, during 6.5 snowfall days, 1.97" (50mm) of snow is typically accumulated.

What is the month with the shortest days?

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

How many hours of daylight does Oakland have in December?

In December, the average day length is 9h and 25min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:54 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:38 pm CST.

How many hours of sunshine does Oakland have in December?

In December, the average sunshine duration is 4.6h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

In Oakland, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes 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
Oakland, IL

Average temperature in December - Oakland, IL
  • Average high temperature in December: 38.5°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in December: 28°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 (21.6°F).

Average pressure in December
Oakland, IL

Average pressure in December - Oakland, IL
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Oakland, IL

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

The windiest months (with the highest average wind speed) are January and February (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).

Average humidity in December
Oakland, IL

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

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).

Average rainfall in December
Oakland, IL

Average rainfall in December - Oakland, IL
  • Average rainfall in December: 1.54"

The wettest month (with the highest rainfall) is April (3.15").
The driest month (with the least rainfall) is February (1.38").

Average rainfall days in December
Oakland, IL

Average rainfall days in December - Oakland, IL
  • Average rainfall days in December: 9.3 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (7.5 days).

Average snowfall in December
Oakland, IL

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

The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Oakland, IL

Average snowfall days in December - Oakland, IL
  • Average snowfall days in December: 6.5 days

The month with the highest number of snowfall days is January (8.5 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
Oakland, IL

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in December
Oakland, IL

Average sunshine days in December - Oakland, IL
  • Average sunshine days in December: 16 days

The months with the most sunshine days are October and November (17.5 days).
The month with the least sunshine days is May (10.5 days).

Average UV index in December
Oakland, IL

Average UV index in December - Oakland, 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).

Average cloud cover in December
Oakland, IL

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

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in December
Oakland, IL

Average visibility in December - Oakland, 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).

Oakland, Illinois, USA

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