December weather forecastPercy Junction, IN
December
Weather in December
The first month of the winter, December, is still a cold month in Percy Junction, Indiana, with temperature in the range of an average high of 36.7°F (2.6°C) and an average low of 26.6°F (-3°C).Temperature
Percy Junction's weather in December involves a decrease in the average high-temperature, moving down from November's chilly 47.8°F (8.8°C) to an icy 36.7°F (2.6°C). In the month of December, the nighttime temperature dips to a steady average of 26.6°F (-3°C).Humidity
The average relative humidity in December is 81%.Rainfall
In Percy Junction, in December, it is raining for 6.6 days, with typically 0.91" (23mm) of accumulated precipitation. In Percy Junction, Indiana, during the entire year, the rain falls for 140.3 days and collects up to 17.56" (446mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Percy Junction, during December, snow falls for 8 days and regularly aggregates up to 1.3" (33mm) of snow. In Percy Junction, during the entire year, snow falls for 36.9 days and aggregates up to 7.56" (192mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 6:54 am and sunset at 4:22 pm. On the last day of December, sunrise is at 7:13 am and sunset at 4:31 pm CST.
Sunshine
The average sunshine in December is 4.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 1 during December translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Percy Junction, IN
- Average high temperature in December: 36.7°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in December: 26.6°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Percy Junction, IN
- Average pressure in December: 30.11"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
Percy Junction, IN
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Percy Junction, IN
- Average humidity in December: 81%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Percy Junction, IN
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is May (2.64").
The driest months (with the least rainfall) are January and February (0.79").
Average rainfall days in December
Percy Junction, IN
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (4.9 days).
Average snowfall in December
Percy Junction, IN
- Average snowfall in December: 1.3"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Percy Junction, IN
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (10.3 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
Percy Junction, IN
- Average daylight in December: 9h and 18min
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 12min
The months with the most sunshine are June and July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Percy Junction, IN
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in December
Percy Junction, 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
Percy Junction, IN
- Average cloud cover in December: 57
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 34).
Average visibility in December
Percy Junction, 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).
