December weather forecastAnkeny, IA
December
Weather in December
December marks the arrival of winter in Ankeny, Iowa, bringing the year to a close under a white blanket of snow. The plummeting temperature combined with a humble snowfall of 1.97" (50mm) on average gives the city a frosty ambiance. The holiday season enhances the charm of this snowy period with beautifully decorated indoor comforts. Short daylight hours fast-track the advent of cold nights, yet festive warm lights adorn the cityscape. December paints a whimsical winter portrait turning it into a winter wonderland.Temperature
December suggests a modest reduction in the average high-temperature, shifting from a frosty 46.8°F (8.2°C) in November to a cold 34°F (1.1°C). December is noted for a mean low-temperature of 22.1°F (-5.5°C).Humidity
The average relative humidity in December is 79%.Rainfall
In Ankeny, in December, it is raining for 5.2 days, with typically 1.26" (32mm) of accumulated precipitation. In Ankeny, during the entire year, the rain falls for 129.8 days and collects up to 25.91" (658mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Ankeny, in December, snow falls for 7.7 days, with typically accumulated 1.97" (50mm) of snow. Throughout the year, in Ankeny, there are 36.2 snowfall days, and 13.94" (354mm) 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 7:22 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:41 am and sunset at 4:54 pm CST.
Sunshine
The average sunshine in December is 4.7h.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 value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Ankeny, IA
- Average high temperature in December: 34°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in December: 22.1°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in December
Ankeny, 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
Ankeny, IA
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Ankeny, 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
Ankeny, IA
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in December
Ankeny, IA
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in December
Ankeny, IA
- Average snowfall in December: 1.97"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Ankeny, IA
- Average snowfall days in December: 7.7 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Ankeny, IA
- Average daylight in December: 9h and 12min
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 42min
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
Ankeny, IA
- Average sunshine days in December: 18.7 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is June (11 days).
Average UV index in December
Ankeny, 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
Ankeny, IA
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in December
Ankeny, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
