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 corresponds with a decrease in average high-temperatures, from November's chilly 47.7°F (8.7°C) to a wintry 36.3°F (2.4°C). The temperature in Mount Ayr lowers to an average of 26.8°F (-2.9°C) during December nights.Humidity
The average relative humidity in December is 81%.Rainfall
In Mount Ayr, in December, it is raining for 8.1 days, with typically 1.3" (33mm) of accumulated precipitation. Throughout the year, there are 151.2 rainfall days, and 22.64" (575mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. In December, it is snowing for 8.5 days. Throughout December, 1.97" (50mm) of snow is accumulated. Throughout the year, there are 40.3 snowfall days, and 10.91" (277mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December in Mount Ayr, sunrise is at 6:55 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:31 pm CST.
Sunshine
The average sunshine in December is 4.1h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Mount Ayr. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: In December, a daily UV index of 1 turns into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Mount Ayr in December?
What is the average humidity in December in Mount Ayr?
How many days does it rain in December in Mount Ayr?
How much does it snow in Mount Ayr in December?
What is the month with the shortest days in Mount Ayr?
How many hours of daylight does Mount Ayr have in December?
When is the sunrise / sunset in December in Mount Ayr?
How many hours of sunshine does Mount Ayr have in December?
What are the months with the lowest UV index in Mount Ayr?
How high is the UV index in December in Mount Ayr?
Average temperature in December
Mount Ayr, IN
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in December: 26.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Mount Ayr, IN
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Mount Ayr, IN
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Mount Ayr, IN
- Average humidity in December: 81%
The months with the highest relative humidity are July and August (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Mount Ayr, IN
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in December
Mount Ayr, IN
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Mount Ayr, IN
- Average snowfall in December: 1.97"
The month with the highest snowfall is February (3.23").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Mount Ayr, IN
- Average snowfall days in December: 8.5 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
Mount Ayr, IN
- 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 1min
The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Mount Ayr, IN
- Average sunshine days in December: 15.4 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (9.6 days).
Average UV index in December
Mount Ayr, IN
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Mount Ayr, IN
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 35).
Average visibility in December
Mount Ayr, IN
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Mount Ayr, Indiana, USA
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