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
The move into December indicates a reduction in the average high-temperature, down from November's chilly 48.4°F (9.1°C) to an icy 35.6°F (2°C). Allerton experiences a nighttime temperature average of 23.5°F (-4.7°C) during December.Humidity
In Allerton, the average relative humidity in December is 79%.Rainfall
January and December are months with the least rain when the rain falls for 5.5 days and typically aggregates up to 0.71" (18mm) of rain.Snowfall
Months with snowfall are January through May, October through December. In Allerton, Iowa, during December, snow falls for 5.7 days and regularly aggregates up to 0.98" (25mm) of snow. In Allerton, Iowa, during the entire year, snow falls for 28.4 days and aggregates up to 11.34" (288mm) of snow.Daylight
The month with the shortest days in Allerton is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:18 am and sunset at 4:46 pm. On the last day of December, in Allerton, Iowa, sunrise is at 7:37 am and sunset at 4:56 pm CST.
Sunshine
In Allerton, the average sunshine in December is 4.8h.UV index
In Allerton, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 2 during December leads to these instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Allerton in December?
What is the average humidity in December in Allerton?
What is the driest month in Allerton?
How many days does it rain in December in Allerton?
How much does it snow in Allerton in December?
What is the month with the shortest days in Allerton?
What is the average length of the day in December in Allerton?
When are sunrise and sunset in December in Allerton?
How many hours of sunshine does Allerton have in December?
How high is the UV index in December in Allerton?
Average temperature in December
Allerton, IA
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 23.5°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in December
Allerton, IA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Allerton, IA
- Average wind speed in December: 10mph
The windiest months (with the highest average wind speed) are January and March (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Allerton, IA
- Average humidity in December: 79%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Allerton, IA
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is June (3.31").
The driest months (with the least rainfall) are January and December (0.71").
Average rainfall days in December
Allerton, IA
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in December
Allerton, IA
- Average snowfall in December: 0.98"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Allerton, IA
- Average snowfall days in December: 5.7 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Allerton, IA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Allerton, IA
- Average sunshine days in December: 20.9 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in December
Allerton, IA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Allerton, IA
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July, August and September (Cloud cover 29).
Average visibility in December
Allerton, 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).
Allerton, Iowa, USA
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