December weather forecastBrownsburg, IN
December
Weather in December
December, the first month of the winter in Brownsburg, is also a wintry month, with temperature in the range of an average high of 38.3°F (3.5°C) and an average low of 27.9°F (-2.3°C).Temperature
A decrease in the average high-temperature is observed during December, shifting from a chilly 49.3°F (9.6°C) in November to an icy 38.3°F (3.5°C). December is noted for a mean low-temperature of 27.9°F (-2.3°C).Humidity
With an average relative humidity of 82%, December is the most humid month in Brownsburg.Rainfall
In Brownsburg, in December, during 10.4 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, there are 163.9 rainfall days, and 27.2" (691mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Brownsburg, during December, snow falls for 8.6 days and regularly aggregates up to 2.56" (65mm) of snow. In Brownsburg, during the entire year, snow falls for 36.9 days and aggregates up to 10.12" (257mm) 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 December, sunrise is at 7:48 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 5:31 pm EST.
Sunshine
In December, the average sunshine is 4.2h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 1 in December transforms into this advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Brownsburg, 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: 27.9°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
Brownsburg, 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
Brownsburg, IN
- Average wind speed in December: 9.1mph
The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in December
Brownsburg, IN
- Average humidity in December: 82%
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Brownsburg, IN
- Average rainfall in December: 1.93"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is February (1.54").
Average rainfall days in December
Brownsburg, IN
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is February (8.4 days).
Average snowfall in December
Brownsburg, IN
- Average snowfall in December: 2.56"
The month with the highest snowfall is January (2.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Brownsburg, IN
- Average snowfall days in December: 8.6 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Brownsburg, IN
- Average daylight in December: 9h and 24min
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 12min
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 6min).
Average sunshine days in December
Brownsburg, IN
- Average sunshine days in December: 14.3 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in December
Brownsburg, 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
Brownsburg, 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
Brownsburg, 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).
