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's arrival comes with a decrease in the average high-temperature, moving from a frosty 47.1°F (8.4°C) in November to a wintry 34.2°F (1.2°C). December brings with it a nighttime average temperature of 22.5°F (-5.3°C) in Des Moines, Iowa.Humidity
In December, the average relative humidity in Des Moines is 78%.Rainfall
In Des Moines, Iowa, in December, during 4.1 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. In Des Moines, during the entire year, the rain falls for 114.4 days and collects up to 16.38" (416mm) of precipitation.Snowfall
Months with snowfall in Des Moines are January through May, October through December. In Des Moines, in December, during 5.7 snowfall days, 0.91" (23mm) of snow is typically accumulated. In Des Moines, during the entire year, snow falls for 30.9 days and aggregates up to 7.36" (187mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December in Des Moines, Iowa, sunrise is at 7:22 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:54 pm CST.
Sunshine
In Des Moines, Iowa, the average sunshine in December is 4.7h.UV index
The average daily maximum UV index in December in Des Moines is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 suggests these recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
How cold is it in Des Moines in December?
What is the average humidity in December in Des Moines?
How many days does it rain in December in Des Moines?
How much does it snow in Des Moines in December?
What is the month with the shortest days in Des Moines?
How many hours of daylight does Des Moines have in December?
What time are sunrise and sunset in December in Des Moines?
How many hours of sunshine does Des Moines have in December?
What is the UV index intensity in December in Des Moines?
Average temperature in December
Des Moines, IA
- Average high temperature in December: 34.2°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in December: 22.5°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in December
Des Moines, 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
Des Moines, IA
- Average wind speed in December: 9.9mph
The windiest months (with the highest average wind speed) are January, February, March and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Des Moines, IA
- Average humidity in December: 78%
The months with the highest relative humidity are January and June (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Des Moines, IA
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in December
Des Moines, IA
- Average rainfall days in December: 4.1 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (3 days).
Average snowfall in December
Des Moines, IA
- Average snowfall in December: 0.91"
The month with the highest snowfall is January (2.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Des Moines, IA
- Average snowfall days in December: 5.7 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Des Moines, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Des Moines, IA
- Average sunshine days in December: 22.3 days
The month with the most sunshine days is December (22.3 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in December
Des Moines, 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
Des Moines, 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
Des Moines, 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).
Des Moines, Iowa, USA
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