December weather forecast
Adel, IA

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Weather in December

The first month of the winter, December, is still a cold month in Adel, Iowa, with an average temperature ranging between max 33.4°F (0.8°C) and min 22.3°F (-5.4°C).

Temperature

December's onset brings a reduction in the average high-temperature, from a chilly 46.6°F (8.1°C) in November to an icy 33.4°F (0.8°C). An average low-temperature of 22.3°F (-5.4°C) is common during the nights of December.

Humidity

The average relative humidity in December in Adel is 78%.

Rainfall

In Adel, in December, during 3.9 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, in Adel, there are 112.7 rainfall days, and 16.06" (408mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Adel. In December, in Adel, it is snowing for 5.7 days. Throughout December, 0.87" (22mm) of snow is accumulated. In Adel, during the entire year, snow falls for 32 days and aggregates up to 7.32" (186mm) of snow.

Daylight

The month with the shortest days in Adel is December, with an average of 9h and 12min of daylight.
On the first day of December in Adel, Iowa, sunrise is at 7:24 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:56 pm CST.

Sunshine

The average sunshine in December in Adel, Iowa, is 4.8h.

UV index

In Adel, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index, 2 in December, converts 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. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Adel in December?

The average high-temperature and low-temperature in Adel during December are 33.4°F (0.8°C) and 22.3°F (-5.4°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is appraised at 86°F (30°C).

What is the average humidity in December in Adel?

In Adel, Iowa, the average relative humidity in December is 78%.

How much does it rain in Adel in December?

In Adel, in December, during 3.9 rainfall days, 0.59" (15mm) of precipitation is typically accumulated.

How many days does it snow in December in Adel?

In December, in Adel, it is snowing for 5.7 days. Throughout December, 0.87" (22mm) of snow is accumulated.

What is the month with the shortest days in Adel?

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

What is the average length of the day in December in Adel?

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

When is the sunrise / sunset in December in Adel?

On the first day of December in Adel, Iowa, sunrise is at 7:24 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:56 pm CST.

How many hours of sunshine does Adel have in December?

In December, the average sunshine duration in Adel, Iowa, is 4.8h.

What is the UV index reading in December in Adel?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Adel, IA

Average temperature in December - Adel, IA
  • Average high temperature in December: 33.4°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in December: 22.3°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

Average pressure in December
Adel, IA

Average pressure in December - Adel, IA
  • Average pressure in December: 30.12"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
Adel, IA

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

The windiest months (with the highest average wind speed) are January and April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

Average humidity in December
Adel, IA

Average humidity in December - Adel, IA
  • Average humidity in December: 78%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (70%).

Average rainfall in December
Adel, IA

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

The wettest month (with the highest rainfall) is June (2.68").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in December
Adel, IA

Average rainfall days in December - Adel, IA
  • Average rainfall days in December: 3.9 days

The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is February (2.8 days).

Average snowfall in December
Adel, IA

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

The month with the highest snowfall is February (2.09").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Adel, IA

Average snowfall days in December - Adel, IA
  • Average snowfall days in December: 5.7 days

The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Adel, 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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in December
Adel, IA

Average sunshine days in December - Adel, IA
  • Average sunshine days in December: 21.9 days

The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is June (11.9 days).

Average UV index in December
Adel, IA

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in December
Adel, IA

Average cloud cover in December - Adel, 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 29).

Average visibility in December
Adel, IA

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

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

Adel, Iowa, USA

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