December weather forecast
Exira, IA

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Weather in December

The first month of the winter, December, is also a wintry month in Exira, Iowa, with an average temperature fluctuating between 20.8°F (-6.2°C) and 32.4°F (0.2°C).

Temperature

Exira experiences a temperature shift at the start of December, with average high-temperatures adjusting from a chilly 45.9°F (7.7°C) in November to an icy 32.4°F (0.2°C). During the nights in December, an average low-temperature of 20.8°F (-6.2°C) is observed.

Humidity

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

Rainfall

In December, the rain falls for 5 days. Throughout December, 1.3" (33mm) of precipitation is accumulated. Throughout the year, there are 127.8 rainfall days, and 24.88" (632mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Exira, in December, during 8.2 snowfall days, 2.4" (61mm) of snow is typically accumulated. In Exira, during the entire year, snow falls for 38 days and aggregates up to 12.72" (323mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:27 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 4:59 pm CST.

Sunshine

The average sunshine in December in Exira is 4.9h.

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 vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum UV index of 2 in December translates into the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in Exira?

An average high-temperature, in December, in Exira, is 32.4°F (0.2°C) and the average low-temperature is 20.8°F (-6.2°C). In July, the average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, is computed to be 89.6°F (32°C).

What is the average humidity in December?

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

How many days does it rain in December?

In Exira, during December, the rain falls for 5 days and regularly aggregates up to 1.3" (33mm) of precipitation.

How much does it snow in December?

In Exira, in December, snow falls for 8.2 days, with typically accumulated 2.4" (61mm) of snow.

What is the month with the shortest days?

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

What is the average length of the day in December?

In Exira, the average day length in December is 9h and 13min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:27 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 4:59 pm CST.

How many hours of sunshine does Exira have in December?

In December, the average sunshine duration is 4.9h.

When is 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?

In Exira, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk 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
Exira, IA

Average temperature in December - Exira, IA
  • Average high temperature in December: 32.4°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (27.5°F).

  • Average low temperature in December: 20.8°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 (14.2°F).

Average pressure in December
Exira, IA

Average pressure in December - Exira, 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 (29.88"Hg).

Average wind speed in December
Exira, IA

Average wind speed in December - Exira, IA
  • Average wind speed in December: 10.1mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).

Average humidity in December
Exira, IA

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

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (69%).

Average rainfall in December
Exira, IA

Average rainfall in December - Exira, IA
  • Average rainfall in December: 1.3"

The wettest month (with the highest rainfall) is June (4.02").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in December
Exira, IA

Average rainfall days in December - Exira, IA
  • Average rainfall days in December: 5 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.3 days).

Average snowfall in December
Exira, IA

Average snowfall in December - Exira, IA
  • Average snowfall in December: 2.4"

The month with the highest snowfall is February (3.43").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Exira, IA

Average snowfall days in December - Exira, IA
  • Average snowfall days in December: 8.2 days

The month with the highest number of snowfall days is January (10 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

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 12min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in December
Exira, IA

Average sunshine days in December - Exira, IA
  • Average sunshine days in December: 19 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in December
Exira, IA

Average UV index in December - Exira, 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, November and December (UV index 2).

Average cloud cover in December
Exira, IA

Average cloud cover in December - Exira, IA
  • Average cloud cover in December: 49

The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in December
Exira, IA

Average visibility in December - Exira, 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).

Exira, Iowa, USA

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