December weather forecast
New Memphis, IL

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Weather in December

December, the first month of the winter in New Memphis, is also an icy month, with temperature in the range of an average low of 30.2°F (-1°C) and an average high of 42.3°F (5.7°C).

Temperature

During New Memphis's transition into December, the average high-temperature lessens, moving from a cool 52.9°F (11.6°C) in November to a cold 42.3°F (5.7°C). New Memphis's average low-temperature for the month of December records at a subzero cold 30.2°F (-1°C).

Humidity

In New Memphis, the average relative humidity in December is 77%.

Rainfall

In New Memphis, in December, during 8.5 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In New Memphis, during the entire year, the rain falls for 151.1 days and collects up to 30.43" (773mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In New Memphis, in December, snow falls for 4.5 days, with typically accumulated 1.46" (37mm) of snow. Throughout the year, there are 22.4 snowfall days, and 6.1" (155mm) of snow is accumulated.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:57 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:48 pm CST.

Sunshine

In New Memphis, Illinois, the average sunshine in December is 4.8h.

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 of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Frequently asked questions

How cold is December?

In December, in New Memphis, the average high-temperature is 42.3°F (5.7°C), and the average low-temperature is 30.2°F (-1°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is evaluated at 93.2°F (34°C).

What is the average humidity in December?

In December, the average relative humidity is 77%.

How many days does it rain in December?

In New Memphis, in December, it is raining for 8.5 days, with typically 1.89" (48mm) of accumulated precipitation.

How many days does it snow in December?

In New Memphis, in December, during 4.5 snowfall days, 1.46" (37mm) of snow is typically accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

The average day length in December is 9h and 32min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 6:57 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:48 pm CST.

How many hours of sunshine does New Memphis have in December?

The average sunshine duration in December is 4.8h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

The average daily maximum UV index in December 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
New Memphis, IL

Average temperature in December - New Memphis, IL
  • Average high temperature in December: 42.3°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in December: 30.2°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in December
New Memphis, IL

Average pressure in December - New Memphis, 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
New Memphis, IL

Average wind speed in December - New Memphis, IL
  • Average wind speed in December: 8.8mph

The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in December
New Memphis, IL

Average humidity in December - New Memphis, IL
  • Average humidity in December: 77%

The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in December
New Memphis, IL

Average rainfall in December - New Memphis, IL
  • Average rainfall in December: 1.89"

The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is February (1.5").

Average rainfall days in December
New Memphis, IL

Average rainfall days in December - New Memphis, IL
  • Average rainfall days in December: 8.5 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8 days).

Average snowfall in December
New Memphis, IL

Average snowfall in December - New Memphis, IL
  • Average snowfall in December: 1.46"

The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
New Memphis, IL

Average snowfall days in December - New Memphis, IL
  • Average snowfall days in December: 4.5 days

The month with the highest number of snowfall days is January (7.5 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
New Memphis, IL

Average daylight in December / Average sunshine in December - New Memphis, 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 5min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

Average sunshine days in December
New Memphis, IL

Average sunshine days in December - New Memphis, IL
  • Average sunshine days in December: 18 days

The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is July (11 days).

Average UV index in December
New Memphis, IL

Average UV index in December - New Memphis, 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
New Memphis, IL

Average cloud cover in December - New Memphis, IL
  • Average cloud cover in December: 49

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in December
New Memphis, IL

Average visibility in December - New Memphis, 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).

New Memphis, Illinois, USA

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