December weather forecast
Mediapolis, IA

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Weather in December

The first month of the winter, December, is also an icy month in Mediapolis, Iowa, with an average temperature fluctuating between 24.6°F (-4.1°C) and 35.8°F (2.1°C).

Temperature

Mediapolis's average high-temperature decreases in December, falling from a frosty 47.8°F (8.8°C) in November to a cold 35.8°F (2.1°C). An average low-temperature of 24.6°F (-4.1°C) marks the month of December.

Humidity

The average relative humidity in December is 79%.

Rainfall

December is the month with the least rainfall. Rain falls for 6.5 days and accumulates 0.87" (22mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Mediapolis. In Mediapolis, during December, snow falls for 6.2 days and regularly aggregates up to 1.1" (28mm) of snow. Throughout the year, there are 32.5 snowfall days, and 9.57" (243mm) 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 7:10 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:46 pm CST.

Sunshine

The average sunshine in December is 4.5h.

UV index

In December, the average daily maximum UV index in Mediapolis is 2. 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: A maximum UV index of 2 in December translates into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Updated: Jul 29, 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 35.8°F (2.1°C) and a low-temperature of 24.6°F (-4.1°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 79%.

What is the driest month?

December is the month with the least rainfall in Mediapolis. Rain falls for 6.5 days and accumulates 0.87" (22mm) of precipitation.

How much does it rain in December?

In Mediapolis, during December, the rain falls for 6.5 days and regularly aggregates up to 0.87" (22mm) of precipitation.

How much does it snow in December?

In December, it is snowing for 6.2 days. Throughout December, 1.1" (28mm) of snow is accumulated.

What is the month with the shortest days?

December has the shortest days of the year, 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 in Mediapolis is 9h and 17min.

When is the sunrise / sunset in December in Mediapolis?

In December, on the first day of the month, sunrise is at 7:10 am and sunset at 4:37 pm. On the last day of the month, in Mediapolis, sunrise is at 7:29 am and sunset at 4:46 pm CST.

How long on average sun shines in December?

In December, the average sunshine duration is 4.5h.

What is the UV index reading in December?

The average daily maximum UV index in December is 2. A UV Index 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
Mediapolis, IA

Average temperature in December - Mediapolis, IA
  • Average high temperature in December: 35.8°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in December: 24.6°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).

Average pressure in December
Mediapolis, IA

Average pressure in December - Mediapolis, IA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in December
Mediapolis, IA

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

The windiest months (with the highest average wind speed) are January, February, March and April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in December
Mediapolis, IA

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

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).

Average rainfall in December
Mediapolis, IA

Average rainfall in December - Mediapolis, IA
  • Average rainfall in December: 0.87"

The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is December (0.87").

Average rainfall days in December
Mediapolis, IA

Average rainfall days in December - Mediapolis, IA
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (4.7 days).

Average snowfall in December
Mediapolis, IA

Average snowfall in December - Mediapolis, IA
  • Average snowfall in December: 1.1"

The month with the highest snowfall is January (3.03").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Mediapolis, IA

Average snowfall days in December - Mediapolis, IA
  • Average snowfall days in December: 6.2 days

The month with the highest number of snowfall days is January (10 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
Mediapolis, IA

Average daylight in December / Average sunshine in December - Mediapolis, 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 3min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in December
Mediapolis, IA

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

The months with the most sunshine days are October and December (18.5 days).
The month with the least sunshine days is June (10.5 days).

Average UV index in December
Mediapolis, IA

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

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

Average cloud cover in December
Mediapolis, IA

Average cloud cover in December - Mediapolis, IA
  • Average cloud cover in December: 52

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in December
Mediapolis, IA

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

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

Mediapolis, Iowa, USA

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