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
The start of December involves a temperature drop, moving from a frosty 47.1°F (8.4°C) in November to an icy 34.7°F (1.5°C). During the month of December, the nighttime temperature falls to an average of 23°F (-5°C).Humidity
In December, the average relative humidity in Columbia is 79%.Rainfall
The months with the least rainfall in Columbia are February and December Rain falls for 5.5 days and accumulates 0.47" (12mm) of rain.Snowfall
Months with snowfall in Columbia, Iowa, are January through May, October through December. In Columbia, Iowa, in December, snow falls for 6.4 days, with typically accumulated 0.75" (19mm) of snow. Throughout the year, in Columbia, there are 30.4 snowfall days, and 6.5" (165mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:19 am and sunset at 4:44 pm. On the last day of December, in Columbia, Iowa, sunrise is at 7:37 am and sunset at 4:53 pm CST.
Sunshine
The average sunshine in December is 4.8h.UV index
In Columbia, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 2 during December translates into these guidelines:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold is December in Columbia?
What is the average humidity in December in Columbia?
What is the driest month in Columbia?
How much does it rain in Columbia in December?
How many days does it snow in December in Columbia?
What is the month with the shortest days in Columbia?
How many hours of daylight does Columbia have in December?
When is the sunrise / sunset in December in Columbia?
How long on average sun shines in December in Columbia?
How high is the UV index in December in Columbia?
Average temperature in December
Columbia, IA
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in December: 23°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
Columbia, 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 (29.89"Hg).
Average wind speed in December
Columbia, IA
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in December
Columbia, 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 (71%).
Average rainfall in December
Columbia, IA
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is May (2.24").
The driest months (with the least rainfall) are February and December (0.47").
Average rainfall days in December
Columbia, IA
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in December
Columbia, IA
- Average snowfall in December: 0.75"
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
Columbia, IA
- Average snowfall days in December: 6.4 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
Columbia, IA
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Columbia, IA
- Average sunshine days in December: 20.5 days
The months with the most sunshine days are November and December (20.5 days).
The month with the least sunshine days is June (11.6 days).
Average UV index in December
Columbia, 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
Columbia, IA
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July, August and September (Cloud cover 29).
Average visibility in December
Columbia, 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).
Columbia, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location
