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 involves a decrease in temperature, down from a chilly 49.5°F (9.7°C) in November to a wintry 39°F (3.9°C). Throughout December, Coatesville anticipates an average low-temperature of 28.2°F (-2.1°C).Humidity
In December, the average relative humidity is 82%.Rainfall
In December, the rain falls for 8.5 days. Throughout December, 1.85" (47mm) of precipitation is accumulated. In Coatesville, during the entire year, the rain falls for 148.1 days and collects up to 25.43" (646mm) of precipitation.Snowfall
Months with snowfall in Coatesville are January through April, November and December. The month with the most snowfall in Coatesville, Indiana, is December, when snow falls for 5.4 days and typically aggregates up to 2.24" (57mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:49 am and sunset at 5:22 pm. On the last day of the month, sunrise is at 8:07 am and sunset at 5:32 pm EST.
Sunshine
In December, the average sunshine is 4.3h.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Coatesville. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Coatesville?
What is the average humidity in December in Coatesville?
How many days does it rain in December in Coatesville?
When does it snow the most in Coatesville?
How much does it snow in Coatesville in December?
What is the month with the shortest days in Coatesville?
What is the average length of the day in December in Coatesville?
What time are sunrise and sunset in December in Coatesville?
How many hours of sunshine does Coatesville have in December?
When is the lowest UV index in Coatesville?
What is the UV index reading in December in Coatesville?
Average temperature in December
Coatesville, IN
- Average high temperature in December: 39°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in December: 28.2°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Coatesville, IN
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Coatesville, IN
- Average wind speed in December: 9mph
The windiest month (with the highest average wind speed) is February (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in December
Coatesville, IN
- Average humidity in December: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Coatesville, IN
- Average rainfall in December: 1.85"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is February (1.5").
Average rainfall days in December
Coatesville, IN
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Coatesville, IN
- Average snowfall in December: 2.24"
The month with the highest snowfall is December (2.24").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Coatesville, IN
- Average snowfall days in December: 5.4 days
The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Coatesville, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Coatesville, IN
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in December
Coatesville, IN
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Coatesville, IN
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Coatesville, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Coatesville, Indiana, USA
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