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 is characterized by a reduction in the average high-temperature, from a chilly 48.6°F (9.2°C) in November to an icy 34.7°F (1.5°C). Throughout December, Emerson anticipates an average low-temperature of 22.1°F (-5.5°C).Humidity
In December, the average relative humidity is 78%.Rainfall
In Emerson, in December, during 4.2 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. In Emerson, during the entire year, the rain falls for 117.2 days and collects up to 21.77" (553mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Emerson, in December, during 4.8 snowfall days, 1.65" (42mm) of snow is typically accumulated. In Emerson, during the entire year, snow falls for 26.7 days and aggregates up to 9.76" (248mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of December in Emerson, sunrise is at 7:27 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:03 pm CST.
Sunshine
In Emerson, the average sunshine in December is 4.9h.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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 in Emerson?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Emerson have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Emerson have in December?
What are the months with the lowest UV index in Emerson?
What is the UV index intensity in December in Emerson?
Average temperature in December
Emerson, IA
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 22.1°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Emerson, IA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Emerson, IA
- Average wind speed in December: 9.6mph
The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in December
Emerson, IA
- Average humidity in December: 78%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (68%).
Average rainfall in December
Emerson, IA
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is June (4.06").
The driest months (with the least rainfall) are January and February (0.63").
Average rainfall days in December
Emerson, IA
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in December
Emerson, IA
- Average snowfall in December: 1.65"
The month with the highest snowfall is January (2.68").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Emerson, IA
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Emerson, 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 36min).
Average sunshine days in December
Emerson, IA
- Average sunshine days in December: 23.1 days
The month with the most sunshine days is December (23.1 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Emerson, IA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Emerson, IA
- Average cloud cover in December: 46
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Emerson, 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).
Emerson, Iowa, USA
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