December weather forecast
Carson, IA

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Weather in December

The first month of the winter, December, is also an icy month in Carson, Iowa, with an average temperature varying between 33.8°F (1°C) and 21.7°F (-5.7°C).

Temperature

The onset of December results in a decrease in the average high-temperature, receding from a chilly 47.3°F (8.5°C) in November to a wintry 33.8°F (1°C). Carson records a consistent low-temperature of 21.7°F (-5.7°C) during December nights.

Humidity

In Carson, the average relative humidity in December is 79%.

Rainfall

In Carson, during December, the rain falls for 4 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, there are 105.3 rainfall days, and 12.24" (311mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Carson, in December, during 5.4 snowfall days, 0.87" (22mm) of snow is typically accumulated. Throughout the year, there are 28.6 snowfall days, and 5" (127mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:28 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:02 pm CST.

Sunshine

The average sunshine in December is 4.9h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

December temperatures vary between a high-temperature of 33.8°F (1°C) and a low-temperature of 21.7°F (-5.7°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in August is calculated to be 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December is 79%.

How much does it rain in December?

In Carson, during December, the rain falls for 4 days and regularly aggregates up to 0.59" (15mm) of precipitation.

How much does it snow in Carson in December?

In Carson, in December, snow falls for 5.4 days, with typically accumulated 0.87" (22mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 18min of daylight.

What is the average length of the day in December?

The average day length in December is 9h and 16min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:28 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:02 pm CST.

How long on average sun shines in December?

In December, the average sunshine duration in Carson is 4.9h.

When is 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 December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's 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
Carson, IA

Average temperature in December - Carson, IA
  • Average high temperature in December: 33.8°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (28.9°F).

  • Average low temperature in December: 21.7°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

Average pressure in December
Carson, IA

Average pressure in December - Carson, IA
  • 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 (29.87"Hg).

Average wind speed in December
Carson, IA

Average wind speed in December - Carson, IA
  • Average wind speed in December: 9.8mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).

Average humidity in December
Carson, IA

Average humidity in December - Carson, IA
  • Average humidity in December: 79%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (68%).

Average rainfall in December
Carson, IA

Average rainfall in December - Carson, IA
  • Average rainfall in December: 0.59"

The wettest month (with the highest rainfall) is June (2.44").
The driest month (with the least rainfall) is February (0.35").

Average rainfall days in December
Carson, IA

Average rainfall days in December - Carson, IA
  • Average rainfall days in December: 4 days

The month with the highest number of rainy days is June (14.8 days).
The month with the least rainy days is February (2.9 days).

Average snowfall in December
Carson, IA

Average snowfall in December - Carson, IA
  • Average snowfall in December: 0.87"

The month with the highest snowfall is January (1.34").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Carson, IA

Average snowfall days in December - Carson, IA
  • Average snowfall days in December: 5.4 days

The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Carson, IA

Average daylight in December / Average sunshine in December - Carson, IA
  • 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 5min

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

Average sunshine days in December
Carson, IA

Average sunshine days in December - Carson, IA
  • Average sunshine days in December: 23.5 days

The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is June (13.1 days).

Average UV index in December
Carson, IA

Average UV index in December - Carson, IA
  • 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
Carson, IA

Average cloud cover in December - Carson, IA
  • Average cloud cover in December: 46

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in December
Carson, IA

Average visibility in December - Carson, IA
  • 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).

Carson, Iowa, USA

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