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 decreases from a chilly 44.8°F (7.1°C) in November to a wintry 32.2°F (0.1°C). December sees the temperature falling to a mean low of 21.7°F (-5.7°C).Humidity
In Shellsburg, the average relative humidity in December is 82%.Rainfall
In Shellsburg, during December, the rain falls for 6.7 days and regularly aggregates up to 1.34" (34mm) of precipitation. In Shellsburg, during the entire year, the rain falls for 138.6 days and collects up to 27.8" (706mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Shellsburg. In Shellsburg, during December, snow falls for 9.1 days and regularly aggregates up to 2.8" (71mm) of snow. Throughout the year, in Shellsburg, there are 41.2 snowfall days, and 16.73" (425mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Shellsburg, Iowa.On the first day of December in Shellsburg, sunrise is at 7:16 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:45 pm CST.
Sunshine
In Shellsburg, the average sunshine in December is 4.3h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 1 during December translates into the following directions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Shellsburg in December?
What is the average humidity in December in Shellsburg?
How much does it rain in Shellsburg in December?
How much does it snow in Shellsburg in December?
What is the month with the shortest days in Shellsburg?
How many hours of daylight does Shellsburg have in December?
What time are sunrise and sunset in December in Shellsburg?
How many hours of sunshine does Shellsburg have in December?
When is the lowest UV index in Shellsburg?
How high is the UV index in December in Shellsburg?
Average temperature in December
Shellsburg, IA
- Average high temperature in December: 32.2°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in December: 21.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in December
Shellsburg, 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
Shellsburg, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Shellsburg, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Shellsburg, IA
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is May (4.37").
The driest months (with the least rainfall) are January and February (1.18").
Average rainfall days in December
Shellsburg, IA
- Average rainfall days in December: 6.7 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in December
Shellsburg, IA
- Average snowfall in December: 2.8"
The month with the highest snowfall is January (5.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Shellsburg, IA
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Shellsburg, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Shellsburg, IA
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is June (9.9 days).
Average UV index in December
Shellsburg, IA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Shellsburg, IA
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Shellsburg, 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).
Shellsburg, Iowa, USA
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