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
December comes with a decrease in the average high-temperature, falling from a chilly 46.2°F (7.9°C) in November to a cold 32.9°F (0.5°C). Adair experiences an average low-temperature reading of 21.4°F (-5.9°C) throughout December.Humidity
In Adair, the average relative humidity in December is 79%.Rainfall
In December, the rain falls for 5.2 days. Throughout December, 1.57" (40mm) of precipitation is accumulated. Throughout the year, there are 137.1 rainfall days, and 28.62" (727mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Adair, in December, during 8.3 snowfall days, 2.8" (71mm) of snow is typically accumulated. Throughout the year, there are 38.4 snowfall days, and 16.38" (416mm) 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 December, sunrise is at 7:26 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 4:58 pm CST.
Sunshine
In Adair, the average sunshine in December is 4.9h.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 low health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 2 during December leads to these advisories:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. 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 much does it rain in December?
How many days does it snow in December in Adair?
What is the month with the shortest days?
How many hours of daylight does Adair have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Adair have in December?
What is the month with the lowest UV index?
How high is the UV index in December in Adair?
Average temperature in December
Adair, IA
- Average high temperature in December: 32.9°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (27.3°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 (14.4°F).
Average pressure in December
Adair, 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
Adair, IA
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in December
Adair, IA
- Average humidity in December: 79%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Adair, IA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is June (4.41").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in December
Adair, IA
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in December
Adair, IA
- Average snowfall in December: 2.8"
The month with the highest snowfall is February (4.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Adair, IA
- Average snowfall days in December: 8.3 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Adair, 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 5min
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 18min).
Average sunshine days in December
Adair, IA
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (8.6 days).
Average UV index in December
Adair, IA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (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
Adair, IA
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Adair, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January and August (5mi).
Adair, Iowa, USA
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