December weather forecast
Dyersville, IA

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Weather in December

The first month of the winter, December, is still a freezing cold month in Dyersville, Iowa, with an average temperature ranging between min 20.7°F (-6.3°C) and max 31.3°F (-0.4°C).

Temperature

A decrease in the average high-temperature is observed during December, shifting from a chilly 43.7°F (6.5°C) in November to a subzero cold 31.3°F (-0.4°C). During December, Dyersville records an average temperature of 20.7°F (-6.3°C) at night.

Humidity

The average relative humidity in December is 83%.

Rainfall

In December, the rain falls for 7.5 days. Throughout December, 1.69" (43mm) of precipitation is accumulated. Throughout the year, there are 150.8 rainfall days, and 32.4" (823mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In Dyersville, in December, during 11.3 snowfall days, 4.37" (111mm) of snow is typically accumulated. In Dyersville, during the entire year, snow falls for 53.4 days and aggregates up to 22.4" (569mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 7:15 am and sunset at 4:32 pm. On the last day of December, sunrise is at 7:33 am and sunset at 4:41 pm CST.

Sunshine

In December, the average sunshine is 4h.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Opt for tightly woven and loose clothing to enhance protection from the Sun. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

In December, the average high-temperature and low-temperature are 31.3°F (-0.4°C) and 20.7°F (-6.3°C) respectively.

What is the average humidity in December?

The average relative humidity in December is 83%.

How much does it rain in December?

In December, the rain falls for 7.5 days. Throughout December, 1.69" (43mm) of precipitation is accumulated.

How much does it snow in December?

In December, in Dyersville, it is snowing for 11.3 days. Throughout December, 4.37" (111mm) of snow is accumulated.

What is the month with the shortest days?

With an average of 9h and 6min of daylight, December has the shortest days of the year.

How many hours of daylight does Dyersville have in December?

In Dyersville, the average day length in December is 9h and 8min.

What time are sunrise and sunset in December in Dyersville?

On the first day of December, sunrise is at 7:15 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:41 pm CST.

How many hours of sunshine does Dyersville have in December?

The average sunshine duration in December is 4h.

What is the month with the lowest UV index?

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1.

How high is the UV index in December?

In Dyersville, the average daily maximum UV index in December is 1. A UV Index reading 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
Dyersville, IA

Average temperature in December - Dyersville, IA
  • Average high temperature in December: 31.3°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in December: 20.7°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).

Average pressure in December
Dyersville, IA

Average pressure in December - Dyersville, IA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in December
Dyersville, IA

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

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

Average humidity in December
Dyersville, IA

Average humidity in December - Dyersville, IA
  • Average humidity in December: 83%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and October (76%).

Average rainfall in December
Dyersville, IA

Average rainfall in December - Dyersville, IA
  • Average rainfall in December: 1.69"

The wettest month (with the highest rainfall) is May (4.72").
The driest month (with the least rainfall) is January (1.34").

Average rainfall days in December
Dyersville, IA

Average rainfall days in December - Dyersville, IA
  • Average rainfall days in December: 7.5 days

The months with the highest number of rainy days are May and June (19.9 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in December
Dyersville, IA

Average snowfall in December - Dyersville, IA
  • Average snowfall in December: 4.37"

The month with the highest snowfall is January (6.22").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Dyersville, IA

Average snowfall days in December - Dyersville, IA
  • Average snowfall days in December: 11.3 days

The month with the highest number of snowfall days is January (14 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
Dyersville, IA

Average daylight in December / Average sunshine in December - Dyersville, 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 6min).

  • Average sunshine in December: 4h and 0min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in December
Dyersville, IA

Average sunshine days in December - Dyersville, IA
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (7.8 days).

Average UV index in December
Dyersville, IA

Average UV index in December - Dyersville, IA
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).

Average cloud cover in December
Dyersville, IA

Average cloud cover in December - Dyersville, IA
  • Average cloud cover in December: 59

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 33).

Average visibility in December
Dyersville, IA

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

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

Dyersville, Iowa, USA

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