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 is marked by a significant decrease in the average high-temperature, moving from an icy 40.8°F (4.9°C) in November to a freezing cold 26.2°F (-3.2°C). Chester sees an average low-temperature of 16.2°F (-8.8°C) during December.Humidity
In December, the average relative humidity is 88%.Rainfall
In Chester, in December, it is raining for 5.3 days, with typically 1.3" (33mm) of accumulated precipitation. Throughout the year, there are 136.6 rainfall days, and 25.79" (655mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Chester. In Chester, during December, snow falls for 12.5 days and regularly aggregates up to 4.02" (102mm) of snow. Throughout the year, there are 60.5 snowfall days, and 23.35" (593mm) of snow is accumulated.Daylight
December has the shortest days of the year in Chester, with an average of 9h and 0min of daylight.On the first day of December in Chester, sunrise is at 7:23 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:43 pm CST.
Sunshine
In Chester, the average sunshine in December is 3.8h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Chester, Iowa. 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 daily UV index of 1 in December interprets into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Chester?
What is the average humidity in December in Chester?
How much does it rain in Chester in December?
How much does it snow in Chester in December?
What is the month with the shortest days in Chester?
What is the average length of the day in December in Chester?
When is the sunrise / sunset in December in Chester?
How many hours of sunshine does Chester have in December?
When is the lowest UV index in Chester?
What is the UV index reading in December in Chester?
Average temperature in December
Chester, IA
- Average high temperature in December: 26.2°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (20.8°F).
- Average low temperature in December: 16.2°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).
Average pressure in December
Chester, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Chester, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in December
Chester, IA
- Average humidity in December: 88%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Chester, IA
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is June (4.53").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in December
Chester, IA
- Average rainfall days in December: 5.3 days
The month with the highest number of rainy days is June (19.1 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in December
Chester, IA
- Average snowfall in December: 4.02"
The month with the highest snowfall is February (5.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Chester, IA
- Average snowfall days in December: 12.5 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Chester, IA
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Chester, IA
- Average sunshine days in December: 15 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (8.8 days).
Average UV index in December
Chester, IA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Chester, IA
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Chester, IA
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).
Chester, Iowa, USA
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