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
Alleman's progression into December involves a drop in the average high-temperature, receding from a chilly 46.4°F (8°C) in November to an icy 32.5°F (0.3°C). During the nights in December, Alleman experiences a consistent average temperature of 21.4°F (-5.9°C).Humidity
In December, the average relative humidity is 80%.Rainfall
In Alleman, in December, it is raining for 5.5 days, with typically 1.42" (36mm) of accumulated precipitation. In Alleman, during the entire year, the rain falls for 141.4 days and collects up to 29.65" (753mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Alleman, Iowa, during December, snow falls for 9.3 days and regularly aggregates up to 2.91" (74mm) of snow. Throughout the year, there are 44 snowfall days, and 16.65" (423mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:23 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:41 am and sunset at 4:53 pm CST.
Sunshine
The average sunshine in December is 4.6h.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Alleman have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index in Alleman?
What is the UV index intensity in December?
Average temperature in December
Alleman, IA
- Average high temperature in December: 32.5°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in December: 21.4°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in December
Alleman, 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 (29.88"Hg).
Average wind speed in December
Alleman, IA
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Alleman, IA
- Average humidity in December: 80%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Alleman, IA
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is May (4.65").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in December
Alleman, IA
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is June (19.3 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in December
Alleman, IA
- Average snowfall in December: 2.91"
The month with the highest snowfall is February (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Alleman, IA
- Average snowfall days in December: 9.3 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Alleman, 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 12min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Alleman, IA
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is June (8.4 days).
Average UV index in December
Alleman, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Alleman, IA
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in December
Alleman, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Alleman, Iowa, USA
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