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
Setting in of December comes with a decrease in the average high-temperature, moving from a chilly 46.9°F (8.3°C) in November to an icy 35.8°F (2.1°C). The average temperature drops to a subzero cold 26.4°F (-3.1°C) during the night in the month of December.Humidity
In Delong, the average relative humidity in December is 83%.Rainfall
In December, the rain falls for 9.1 days. Throughout December, 1.06" (27mm) of precipitation is accumulated. Throughout the year, there are 154.4 rainfall days, and 20.59" (523mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Delong, during December, snow falls for 10.8 days and regularly aggregates up to 1.73" (44mm) of snow. In Delong, during the entire year, snow falls for 50.7 days and aggregates up to 10.55" (268mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:52 am and sunset at 5:17 pm. On the last day of December, sunrise is at 8:10 am and sunset at 5:27 pm EST.
Sunshine
In Delong, the average sunshine in December is 3.8h.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 health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Delong have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Delong, IN
- Average high temperature in December: 35.8°F
The warmest month (with the highest average high temperature) is July (80.2°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 (63.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Delong, IN
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Delong, IN
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Delong, IN
- Average humidity in December: 83%
The months with the highest relative humidity are January, February and July (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Delong, IN
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in December
Delong, IN
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in December
Delong, IN
- Average snowfall in December: 1.73"
The month with the highest snowfall is January (2.87").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Delong, IN
- Average snowfall days in December: 10.8 days
The month with the highest number of snowfall days is January (14.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Delong, 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: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
Delong, IN
- Average sunshine days in December: 14.1 days
The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in December
Delong, 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
Delong, IN
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in December
Delong, IN
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Delong, Indiana, USA
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