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
In December, the average high-temperature goes from a chilly 47.3°F (8.5°C) in November to an icy 34.7°F (1.5°C). During the month of December, an average temperature of 23.5°F (-4.7°C) is noted during the nights.Humidity
In Cedar, the average relative humidity in December is 80%.Rainfall
In December, the rain falls for 7.1 days. Throughout December, 1.3" (33mm) of precipitation is accumulated. Throughout the year, there are 141.1 rainfall days, and 28.5" (724mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Cedar, during December, snow falls for 6.5 days and regularly aggregates up to 1.65" (42mm) of snow. Throughout the year, there are 32.1 snowfall days, and 15.28" (388mm) 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 7:16 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:35 am and sunset at 4:51 pm CST.
Sunshine
In Cedar, the average sunshine in December is 4.8h.UV index
In Cedar, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Cedar have in December?
What is the UV index intensity in December?
Average temperature in December
Cedar, IA
- Average high temperature in December: 34.7°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 (28.6°F).
- Average low temperature in December: 23.5°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in December
Cedar, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Cedar, IA
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity in December
Cedar, IA
- Average humidity in December: 80%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Cedar, IA
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
Cedar, IA
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in December
Cedar, IA
- Average snowfall in December: 1.65"
The month with the highest snowfall is February (4.92").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Cedar, IA
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cedar, 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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Cedar, IA
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (9 days).
Average UV index in December
Cedar, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Cedar, 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 August and September (Cloud cover 29).
Average visibility in December
Cedar, 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).
Cedar, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location