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
Witnessing a clear drop in December, the average high-temperature declines from November's chilly 42.8°F (6°C) to a subzero cold 28.2°F (-2.1°C). Throughout December, Garner witnesses a nighttime temperature average of 18.1°F (-7.7°C).Humidity
The average relative humidity in December in Garner is 86%.Rainfall
In December, the rain falls for 2.8 days. Throughout December, 0.31" (8mm) of precipitation is accumulated. In Garner, during the entire year, the rain falls for 80.2 days and collects up to 6.14" (156mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Garner, Iowa. In Garner, Iowa, during December, snow falls for 8.5 days and regularly aggregates up to 0.35" (9mm) of snow. Throughout the year, in Garner, Iowa, there are 36.9 snowfall days, and 3.31" (84mm) of snow is accumulated.Daylight
The month with the shortest days in Garner is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:26 am and sunset at 4:40 pm. On the last day of December, in Garner, sunrise is at 7:45 am and sunset at 4:49 pm CST.
Sunshine
The average sunshine in December in Garner, Iowa, is 4h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Garner. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, the UV index of 1 transforms into the following advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. 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
How cold is it in Garner in December?
What is the average humidity in December in Garner?
How many days does it rain in December in Garner?
How many days does it snow in December in Garner?
What is the month with the shortest days in Garner?
How many hours of daylight does Garner have in December?
When are sunrise and sunset in December in Garner?
How long on average sun shines in December in Garner?
What are the months with the lowest UV index in Garner?
How high is the UV index in December in Garner?
Average temperature in December
Garner, IA
- Average high temperature in December: 28.2°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in December: 18.1°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (10.2°F).
Average pressure in December
Garner, 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 (29.88"Hg).
Average wind speed in December
Garner, IA
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in December
Garner, IA
- Average humidity in December: 86%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Garner, IA
- Average rainfall in December: 0.31"
The wettest month (with the highest rainfall) is June (0.87").
The driest month (with the least rainfall) is January (0.2").
Average rainfall days in December
Garner, IA
- Average rainfall days in December: 2.8 days
The month with the highest number of rainy days is June (12 days).
The months with the least rainy days are January and February (1.7 days).
Average snowfall in December
Garner, IA
- Average snowfall in December: 0.35"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Garner, IA
- Average snowfall days in December: 8.5 days
The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Garner, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Garner, IA
- Average sunshine days in December: 23.2 days
The month with the most sunshine days is January (24.6 days).
The month with the least sunshine days is June (14.8 days).
Average UV index in December
Garner, IA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Garner, IA
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Garner, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Garner, Iowa, USA
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