December weather forecast
Parkersburg, IL

Share

Weather in December

The first month of the winter, December, is also a wintry month in Parkersburg, Illinois, with an average temperature ranging between max 41.5°F (5.3°C) and min 30.9°F (-0.6°C).

Temperature

December is characterized by a reduction in the average high-temperature, from a fresh 52°F (11.1°C) in November to a wintry 41.5°F (5.3°C). Throughout December, the average low-temperature dips to a subzero cold 30.9°F (-0.6°C).

Humidity

In December, the average relative humidity is 78%.

Rainfall

In Parkersburg, in December, it is raining for 10.5 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, there are 152.3 rainfall days, and 27.99" (711mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In Parkersburg, during December, snow falls for 4.5 days and regularly aggregates up to 1.34" (34mm) of snow. Throughout the year, there are 20.3 snowfall days, and 5.47" (139mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 6:51 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 4:41 pm CST.

Sunshine

In Parkersburg, 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 minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: In December, the maximum UV index of 2 suggests this advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. It's recommended to limit sun exposure when its radiation is at its peak during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.

Frequently asked questions

How cold is December?

The average high-temperature, in December, in Parkersburg, is 41.5°F (5.3°C), while the average low-temperature is 30.9°F (-0.6°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 91.4°F (33°C).

What is the average humidity in December?

In December, the average relative humidity is 78%.

How many days does it rain in December?

In Parkersburg, in December, it is raining for 10.5 days, with typically 2.17" (55mm) of accumulated precipitation.

How many days does it snow in December?

In December, it is snowing for 4.5 days. Throughout December, 1.34" (34mm) of snow is accumulated.

What is the month with the shortest days?

With an average of 9h and 30min of daylight, December has the shortest days of the year in Parkersburg.

How many hours of daylight does Parkersburg have in December?

The average day length in December is 9h and 31min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:51 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 4:41 pm CST.

How many hours of sunshine does Parkersburg have in December?

In Parkersburg, the average sunshine duration in December is 4.6h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to Sun's UV rays.
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
Parkersburg, IL

Average temperature in December - Parkersburg, IL
  • Average high temperature in December: 41.5°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in December: 30.9°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in December
Parkersburg, IL

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Parkersburg, IL

Average wind speed in December - Parkersburg, IL
  • Average wind speed in December: 9.4mph

The windiest months (with the highest average wind speed) are January and February (10.2mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).

Average humidity in December
Parkersburg, IL

Average humidity in December - Parkersburg, IL
  • Average humidity in December: 78%

The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (70%).

Average rainfall in December
Parkersburg, IL

Average rainfall in December - Parkersburg, IL
  • Average rainfall in December: 2.17"

The wettest month (with the highest rainfall) is April (4.09").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in December
Parkersburg, IL

Average rainfall days in December - Parkersburg, IL
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in December
Parkersburg, IL

Average snowfall in December - Parkersburg, IL
  • Average snowfall in December: 1.34"

The month with the highest snowfall is January (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Parkersburg, IL

Average snowfall days in December - Parkersburg, IL
  • Average snowfall days in December: 4.5 days

The month with the highest number of snowfall days is January (5.9 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
Parkersburg, IL

Average daylight in December / Average sunshine in December - Parkersburg, IL
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in December
Parkersburg, IL

Average sunshine days in December - Parkersburg, IL
  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is July (11.2 days).

Average UV index in December
Parkersburg, IL

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

The months with the highest UV index are May, 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
Parkersburg, IL

Average cloud cover in December - Parkersburg, IL
  • Average cloud cover in December: 51

The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June and August (Cloud cover 28).

Average visibility in December
Parkersburg, IL

Average visibility in December - Parkersburg, 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).

Parkersburg, Illinois, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location