December weather forecast
Arcadia, IA

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Weather in December

The first month of the winter, December, is also a wintry month in Arcadia, Iowa, with an average temperature varying between 20.7°F (-6.3°C) and 32°F (0°C).

Temperature

With December's onset, the average high-temperature recedes from November's chilly 45.9°F (7.7°C) to a wintry 32°F (0°C). Arcadia in December anticipates an average nighttime temperature of 20.7°F (-6.3°C).

Humidity

The average relative humidity in December in Arcadia is 80%.

Rainfall

In Arcadia, in December, during 4.5 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, there are 126.1 rainfall days, and 26.38" (670mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Arcadia, Iowa, in December, snow falls for 9.1 days, with typically accumulated 3.07" (78mm) of snow. Throughout the year, there are 41.5 snowfall days, and 18.23" (463mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:29 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 4:58 pm CST.

Sunshine

In December, the average sunshine is 4.7h.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 2 during December translates into the following guidance:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

December temperatures in Arcadia vary between a high-temperature of 32°F (0°C) and a low-temperature of 20.7°F (-6.3°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is computed to be 87.8°F (31°C).

What is the average humidity in December?

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

How many days does it rain in December?

In Arcadia, in December, it is raining for 4.5 days, with typically 1.57" (40mm) of accumulated precipitation.

How many days does it snow in December?

In Arcadia, Iowa, during December, snow falls for 9.1 days and regularly aggregates up to 3.07" (78mm) of snow.

What is the month with the shortest days in Arcadia?

December has the shortest days of the year, with an average of 9h and 12min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 10min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:29 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 4:58 pm CST.

How many hours of sunshine does Arcadia have in December?

In December, the average sunshine duration is 4.7h.

What is the month with the lowest UV index?

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

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 low health threat 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
Arcadia, IA

Average temperature in December - Arcadia, IA
  • Average high temperature in December: 32°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (26.6°F).

  • Average low temperature in December: 20.7°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

Average pressure in December
Arcadia, IA

Average pressure in December - Arcadia, 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
Arcadia, IA

Average wind speed in December - Arcadia, IA
  • Average wind speed in December: 10.6mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).

Average humidity in December
Arcadia, IA

Average humidity in December - Arcadia, IA
  • Average humidity in December: 80%

The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are April and October (69%).

Average rainfall in December
Arcadia, IA

Average rainfall in December - Arcadia, IA
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is January (0.87").

Average rainfall days in December
Arcadia, IA

Average rainfall days in December - Arcadia, IA
  • Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is February (3.3 days).

Average snowfall in December
Arcadia, IA

Average snowfall in December - Arcadia, IA
  • Average snowfall in December: 3.07"

The month with the highest snowfall is February (4.96").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Arcadia, IA

Average snowfall days in December - Arcadia, IA
  • Average snowfall days in December: 9.1 days

The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Arcadia, IA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in December
Arcadia, IA

Average sunshine days in December - Arcadia, IA
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in December
Arcadia, IA

Average UV index in December - Arcadia, IA
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

Average cloud cover in December
Arcadia, IA

Average cloud cover in December - Arcadia, IA
  • Average cloud cover in December: 50

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in December
Arcadia, IA

Average visibility in December - Arcadia, IA
  • Average visibility in December: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Arcadia, Iowa, USA

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