Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
With the transition into December, Pierson experiences a significant decrease in average high-temperatures, moving down from a chilly 45.5°F (7.5°C) in November to a freezing cold 30.6°F (-0.8°C). December generally records an average low-temperature of 19.2°F (-7.1°C).Humidity
In Pierson, the average relative humidity in December is 81%.Rainfall
In Pierson, in December, during 2.5 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. Throughout the year, in Pierson, Iowa, there are 105.4 rainfall days, and 15.83" (402mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Pierson, during December, snow falls for 6.2 days and regularly aggregates up to 1.38" (35mm) of snow. Throughout the year, there are 32 snowfall days, and 8.82" (224mm) of snow is accumulated.Daylight
December has the shortest days of the year in Pierson, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:34 am and sunset at 4:51 pm. On the last day of December, sunrise is at 7:53 am and sunset at 5:00 pm CST.
Sunshine
In December, the average sunshine is 4.7h.UV index
In Pierson, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Enhance your sun protection with tightly woven, yet airy clothing. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
How cold is it in Pierson in December?
What is the average humidity in December in Pierson?
How many days does it rain in December in Pierson?
How many days does it snow in December in Pierson?
What is the month with the shortest days in Pierson?
How many hours of daylight does Pierson have in December?
What time are sunrise and sunset in December in Pierson?
How many hours of sunshine does Pierson have in December?
What is the UV index intensity in December in Pierson?
Average temperature in December
Pierson, IA
- Average high temperature in December: 30.6°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in December: 19.2°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in December
Pierson, IA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Pierson, IA
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in December
Pierson, IA
- Average humidity in December: 81%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (66%).
Average rainfall in December
Pierson, IA
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is June (2.48").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in December
Pierson, IA
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (2.3 days).
Average snowfall in December
Pierson, IA
- Average snowfall in December: 1.38"
The month with the highest snowfall is March (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Pierson, IA
- Average snowfall days in December: 6.2 days
The month with the highest number of snowfall days is January (8.9 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
Pierson, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Pierson, IA
- Average sunshine days in December: 23.4 days
The month with the most sunshine days is December (23.4 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in December
Pierson, 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
Pierson, IA
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Pierson, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Pierson, Iowa, USA
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