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
Start of December brings a shift in the average high-temperature, falling from November's chilly 48°F (8.9°C) to a cold 36.9°F (2.7°C). Throughout the month of December, Brookston expects an average low of 27°F (-2.8°C).Humidity
In Brookston, the average relative humidity in December is 81%.Rainfall
In Brookston, during December, the rain falls for 4.6 days and regularly aggregates up to 0.47" (12mm) of precipitation. Throughout the year, there are 95.3 rainfall days, and 7.64" (194mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Brookston, Indiana. In Brookston, in December, snow falls for 4.5 days, with typically accumulated 0.39" (10mm) of snow. Throughout the year, there are 23.1 snowfall days, and 2.44" (62mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:52 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 8:10 am and sunset at 5:30 pm EST.
Sunshine
The average sunshine in December is 4.3h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Brookston?
What is the average humidity in December in Brookston?
How much does it rain in Brookston in December?
How much does it snow in Brookston in December?
What is the month with the shortest days in Brookston?
What is the average length of the day in December in Brookston?
When are sunrise and sunset in December in Brookston?
How many hours of sunshine does Brookston have in December?
What is the month with the lowest UV index in Brookston?
What is the UV index reading in December in Brookston?
Average temperature in December
Brookston, IN
- Average high temperature in December: 36.9°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in December: 27°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in December
Brookston, 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
Brookston, IN
- Average wind speed in December: 9.5mph
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
Brookston, IN
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Brookston, IN
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is May (0.98").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in December
Brookston, IN
- Average rainfall days in December: 4.6 days
The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in December
Brookston, IN
- Average snowfall in December: 0.39"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Brookston, IN
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Brookston, 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 18min).
- Average sunshine in December: 4h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Brookston, IN
- Average sunshine days in December: 23.6 days
The month with the most sunshine days is December (23.6 days).
The month with the least sunshine days is May (15.6 days).
Average UV index in December
Brookston, IN
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Brookston, IN
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are June and August (Cloud cover 33).
Average visibility in December
Brookston, 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).
Brookston, Indiana, USA
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