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
With December's arrival, Union Mills sees a decrease in average high-temperatures, moving from a chilly 46.9°F (8.3°C) in November to a wintry 35.6°F (2°C). Throughout December, the nighttime temperature averages to a subzero cold 26.4°F (-3.1°C).Humidity
In Union Mills, the average relative humidity in December is 82%.Rainfall
In December, in Union Mills, the rain falls for 8.9 days. Throughout December, 1.46" (37mm) of precipitation is accumulated. In Union Mills, Indiana, during the entire year, the rain falls for 154.3 days and collects up to 26.69" (678mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Union Mills. In Union Mills, in December, snow falls for 11 days, with typically accumulated 2.87" (73mm) of snow. Throughout the year, in Union Mills, Indiana, there are 52.4 snowfall days, and 15.83" (402mm) of snow is accumulated.Daylight
The month with the shortest days in Union Mills, Indiana, is December, with an average of 9h and 12min of daylight.On the first day of December in Union Mills, Indiana, sunrise is at 6:54 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:27 pm CST.
Sunshine
In Union Mills, the average sunshine in December is 3.6h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 1 suggests this advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Union Mills in December?
What is the average humidity in December in Union Mills?
How many days does it rain in December in Union Mills?
How many days does it snow in December in Union Mills?
What is the month with the shortest days in Union Mills?
How many hours of daylight does Union Mills have in December?
When are sunrise and sunset in December in Union Mills?
How many hours of sunshine does Union Mills have in December?
What are the months with the lowest UV index in Union Mills?
What is the UV index intensity in December in Union Mills?
Average temperature in December
Union Mills, IN
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Union Mills, IN
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Union Mills, IN
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in December
Union Mills, IN
- Average humidity in December: 82%
The months with the highest relative humidity are January, February and July (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Union Mills, IN
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in December
Union Mills, IN
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in December
Union Mills, IN
- Average snowfall in December: 2.87"
The month with the highest snowfall is February (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Union Mills, IN
- Average snowfall days in December: 11 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Union Mills, IN
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Union Mills, IN
- Average sunshine days in December: 12.7 days
The month with the most sunshine days is November (15 days).
The month with the least sunshine days is April (10.5 days).
Average UV index in December
Union Mills, IN
- 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 and December (UV index 1).
Average cloud cover in December
Union Mills, IN
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in December
Union Mills, 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).
Union Mills, Indiana, USA
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