December weather forecastPella, IA
December
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
The arrival of December corresponds with a temperature reduction, down from November's frosty 47.1°F (8.4°C) to an icy 34.5°F (1.4°C). Throughout the December nights, Pella encounters a low-temperature of 22.8°F (-5.1°C).Humidity
In December, the average relative humidity is 79%.Rainfall
In Pella, during December, the rain falls for 4.9 days and regularly aggregates up to 0.47" (12mm) of precipitation. Throughout the year, there are 109.6 rainfall days, and 12.28" (312mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Pella, in December, during 6.5 snowfall days, 0.59" (15mm) of snow is typically accumulated. Throughout the year, there are 29.7 snowfall days, and 5.16" (131mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December, 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.
Sunshine
In Pella, the average sunshine in December is 4.7h.UV index
In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, the UV index of 2 transforms into the following advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in December /
Average sunshine in December
Pella, IA
- Average daylight in December: 9h and 12min
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 42min
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).
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).
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).
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).
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).
