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
A shift in Atalissa's weather is observed as November turns into December, with the average high temperature reducing from a frosty 46.4°F (8°C) to a cold 34°F (1.1°C). Atalissa encounters an average low-temperature of 23°F (-5°C) during December nights.Humidity
In December, the average relative humidity is 81%.Rainfall
In Atalissa, during December, the rain falls for 3.8 days and regularly aggregates up to 0.31" (8mm) of precipitation. Throughout the year, there are 92.5 rainfall days, and 7.68" (195mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Atalissa, in December, snow falls for 4.3 days, with typically accumulated 0.16" (4mm) of snow. Throughout the year, there are 22.5 snowfall days, and 3.11" (79mm) 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 the month, sunrise is at 7:12 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:31 am and sunset at 4:44 pm CST.
Sunshine
In December, the average sunshine is 4.5h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 1 suggests these recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much 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 Atalissa have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Atalissa have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Atalissa, IA
- Average high temperature in December: 34°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in December: 23°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in December
Atalissa, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Atalissa, IA
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
Atalissa, IA
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Atalissa, IA
- Average rainfall in December: 0.31"
The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is February (0.28").
Average rainfall days in December
Atalissa, IA
- Average rainfall days in December: 3.8 days
The month with the highest number of rainy days is June (13.2 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in December
Atalissa, IA
- Average snowfall in December: 0.16"
The month with the highest snowfall is January (1.1").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Atalissa, IA
- Average snowfall days in December: 4.3 days
The month with the highest number of snowfall days is January (6.4 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
Atalissa, 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 3min
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
Atalissa, IA
- Average sunshine days in December: 24.4 days
The month with the most sunshine days is December (24.4 days).
The month with the least sunshine days is June (14.8 days).
Average UV index in December
Atalissa, IA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Atalissa, IA
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Atalissa, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Atalissa, Iowa, USA
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