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
The arrival of December corresponds with a shift in temperature, down from a chilly 44.1°F (6.7°C) in November to a freezing cold 31.5°F (-0.3°C). Ballyclough experiences an average temperature drop to a still subzero cold 21.2°F (-6°C) during December nights.Humidity
In Ballyclough, the average relative humidity in December is 82%.Rainfall
In Ballyclough, in December, during 7.2 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, there are 140.9 rainfall days, and 28.11" (714mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Ballyclough, during December, snow falls for 9.3 days and regularly aggregates up to 3.03" (77mm) of snow. In Ballyclough, during the entire year, snow falls for 46.4 days and aggregates up to 17.64" (448mm) of snow.Daylight
December has the shortest days of the year in Ballyclough, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:13 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:40 pm CST.
Sunshine
The average sunshine in December is 4.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Ballyclough, 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 (24.6°F).
- Average low temperature in December: 21.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in December
Ballyclough, 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
Ballyclough, IA
- Average wind speed in December: 9.9mph
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
Ballyclough, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Ballyclough, IA
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in December
Ballyclough, IA
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in December
Ballyclough, IA
- Average snowfall in December: 3.03"
The month with the highest snowfall is January (5.08").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Ballyclough, IA
- Average snowfall days in December: 9.3 days
The month with the highest number of snowfall days is January (13.3 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
Ballyclough, 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 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Ballyclough, IA
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is December (17.3 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Ballyclough, IA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Ballyclough, IA
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Ballyclough, 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).
Ballyclough, Iowa, USA
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