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
During Cathedral Square's transition into December, the average high-temperature lessens, moving from a frosty 43.9°F (6.6°C) in November to a freezing cold 31.5°F (-0.3°C). Cathedral Square, in the month of December, anticipates a consistent average low-temperature of 21°F (-6.1°C).Humidity
In December, the average relative humidity is 82%.Rainfall
In Cathedral Square, in December, it is raining for 6.3 days, with typically 1.38" (35mm) of accumulated precipitation. In Cathedral Square, during the entire year, the rain falls for 135.3 days and collects up to 27.4" (696mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Cathedral Square, Iowa, during December, snow falls for 9 days and regularly aggregates up to 2.68" (68mm) of snow. In Cathedral Square, during the entire year, snow falls for 43.9 days and aggregates up to 17.09" (434mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:13 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:39 pm CST.
Sunshine
In December, the average sunshine is 4h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 1 during December translates into the following guidance:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in 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?
How many hours of daylight does Cathedral Square have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Cathedral Square, IA
- Average high temperature in December: 31.5°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in December: 21°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 (12.4°F).
Average pressure in December
Cathedral Square, IA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Cathedral Square, IA
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
Cathedral Square, IA
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is October (76%).
Average rainfall in December
Cathedral Square, IA
- Average rainfall in December: 1.38"
The wettest months (with the highest rainfall) are May and June (3.7").
The driest months (with the least rainfall) are January and February (1.14").
Average rainfall days in December
Cathedral Square, IA
- Average rainfall days in December: 6.3 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in December
Cathedral Square, IA
- Average snowfall in December: 2.68"
The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Cathedral Square, IA
- Average snowfall days in December: 9 days
The month with the highest number of snowfall days is January (12.8 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
Cathedral Square, 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 6min).
- Average sunshine in December: 4h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Cathedral Square, IA
- Average sunshine days in December: 17.5 days
The months with the most sunshine days are November and December (17.5 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Cathedral Square, IA
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Cathedral Square, 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
Cathedral Square, 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).
Cathedral Square, Iowa, USA
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