December weather forecast
Pella, IA

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Weather in December

December marks the full swing of winter in Pella. Temperatures see a further drop from those in November, while daylight hours reach their lowest of the year. Displaying the first substantial snowfall of 0.59" (15mm) after November's trace, December asserts the holiday season and its associated cold weather. As the year comes to a close, the colder temperatures and reduced sunlight hours herald in the long winter nights characteristic of Pella's December. Although the year draws to an end, the city's weather doesn't cease to keep things exciting and varied.

Temperature

In Pella, entering December brings a temperature decrement, reducing from November's frosty 47.1°F (8.4°C) to a cold 34.5°F (1.4°C). In the month of December, Pella witnesses a consistent average low-temperature of 22.8°F (-5.1°C).

Humidity

In December, the average relative humidity is 79%.

Rainfall

In Pella, in December, during 4.9 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. In Pella, during the entire year, the rain falls for 109.6 days and collects up to 12.28" (312mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Pella, Iowa. In Pella, during December, snow falls for 6.5 days and regularly aggregates up to 0.59" (15mm) of snow. In Pella, during the entire year, snow falls for 29.7 days and aggregates up to 5.16" (131mm) of snow.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year in Pella.
On the first day of the month, sunrise is at 7:19 am and sunset at 4:42 pm. On the last day of December, in Pella, sunrise is at 7:37 am and sunset at 4:52 pm CST.

Sunshine

In Pella, Iowa, the average sunshine in December is 4.7h.

UV index

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

How cold is December in Pella?

The high-temperature in Pella, Iowa, during December is 34.5°F (1.4°C) and the low-temperature is 22.8°F (-5.1°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is computed to be 87.8°F (31°C).

What is the average humidity in December in Pella?

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

How much does it rain in Pella in December?

In December, in Pella, Iowa, the rain falls for 4.9 days. Throughout December, 0.47" (12mm) of precipitation is accumulated.

How much does it snow in Pella in December?

In December, in Pella, Iowa, it is snowing for 6.5 days. Throughout December, 0.59" (15mm) of snow is accumulated.

What is the month with the shortest days in Pella?

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

How many hours of daylight does Pella have in December?

The average day length in December is 9h and 14min.

What time are sunrise and sunset in December in Pella?

On the first day of December in Pella, sunrise is at 7:19 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 4:52 pm CST.

How many hours of sunshine does Pella have in December?

In December, the average sunshine duration in Pella, Iowa, is 4.7h.

What is the UV index reading in December in Pella?

In Pella, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents 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
Pella, IA

Average temperature in December - Pella, IA
  • Average high temperature in December: 34.5°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in December: 22.8°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 (14.9°F).

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Average pressure in December
Pella, IA

Average pressure in December - Pella, IA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in December
Pella, IA

Average wind speed in December - Pella, IA
  • Average wind speed in December: 9.8mph

The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity in December
Pella, IA

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

The months with the highest relative humidity are January, February, June and July (82%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in December
Pella, IA

Average rainfall in December - Pella, IA
  • Average rainfall in December: 0.47"

The wettest month (with the highest rainfall) is May (2.09").
The driest months (with the least rainfall) are January and February (0.43").

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Average rainfall days in December
Pella, IA

Average rainfall days in December - Pella, IA
  • Average rainfall days in December: 4.9 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in December
Pella, IA

Average snowfall in December - Pella, IA
  • Average snowfall in December: 0.59"

The month with the highest snowfall is January (1.81").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Pella, IA

Average snowfall days in December - Pella, IA
  • Average snowfall days in December: 6.5 days

The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Pella, 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 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).

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Average sunshine days in December
Pella, IA

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

The month with the most sunshine days is December (21.9 days).
The month with the least sunshine days is June (12.4 days).

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Average UV index in December
Pella, IA

Average UV index in December - Pella, 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).

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Average cloud cover in December
Pella, IA

Average cloud cover in December - Pella, IA
  • Average cloud cover in December: 51

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).

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Average visibility in December
Pella, IA

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

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

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Pella, Iowa, USA

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