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
The average high-temperature decreases in December, shifting from a chilly 49.1°F (9.5°C) in November to a wintry 38.3°F (3.5°C). An average low-temperature of 27.7°F (-2.4°C) is recorded during the nights in December.Humidity
December is the most humid month, with an average relative humidity of 83%.Rainfall
In Greenbriar, Indiana, in December, it is raining for 9.7 days, with typically 1.97" (50mm) of accumulated precipitation. Throughout the year, in Greenbriar, there are 158.4 rainfall days, and 28.23" (717mm) of precipitation is accumulated.Snowfall
Months with snowfall in Greenbriar are January through April, October through December. In Greenbriar, during December, snow falls for 8.4 days and regularly aggregates up to 2.6" (66mm) of snow. In Greenbriar, Indiana, during the entire year, snow falls for 36.1 days and aggregates up to 10.98" (279mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:47 am and sunset at 5:20 pm. On the last day of December, sunrise is at 8:06 am and sunset at 5:30 pm EST.
Sunshine
In December, the average sunshine is 4.1h.UV index
The month with the lowest UV index in Greenbriar is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 1 during December, leads to the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
Is December cold in Greenbriar?
What is the most humid month in Greenbriar?
What is the average humidity in December in Greenbriar?
How much does it rain in Greenbriar in December?
How much does it snow in Greenbriar in December?
What is the month with the shortest days in Greenbriar?
What is the average length of the day in December in Greenbriar?
When are sunrise and sunset in December in Greenbriar?
How long on average sun shines in December in Greenbriar?
What is the month with the lowest UV index in Greenbriar?
What is the UV index intensity in December in Greenbriar?
Average temperature in December
Greenbriar, IN
- Average high temperature in December: 38.3°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 (32.5°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in December
Greenbriar, 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
Greenbriar, IN
- Average wind speed in December: 9.1mph
The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in December
Greenbriar, IN
- Average humidity in December: 83%
The month with the highest relative humidity is December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Greenbriar, IN
- Average rainfall in December: 1.97"
The wettest months (with the highest rainfall) are April and May (3.43").
The driest month (with the least rainfall) is February (1.65").
Average rainfall days in December
Greenbriar, IN
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in December
Greenbriar, IN
- Average snowfall in December: 2.6"
The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Greenbriar, IN
- Average snowfall days in December: 8.4 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Greenbriar, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Greenbriar, IN
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (9.6 days).
Average UV index in December
Greenbriar, IN
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Greenbriar, IN
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Greenbriar, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Greenbriar, Indiana, USA
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