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
With the arrival of December, Brownlee Crossroads notices a mild change in the average high-temperature, sliding from November's refreshing 61.7°F (16.5°C) to a fresh 54.5°F (12.5°C). December generally records an average low-temperature of 39.7°F (4.3°C).Humidity
December is the most humid month, with an average relative humidity of 77%.Rainfall
December is the month with the most rainfall. Rain falls for 12.3 days and accumulates 3.74" (95mm) of precipitation.Snowfall
January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 2 snowfall days, and 1.81" (46mm) of snow is accumulated.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:18 am and sunset at 5:20 pm. On the last day of December, sunrise is at 7:35 am and sunset at 5:30 pm EST.
Sunshine
With an average of 5.3h of sunshine, December has the least sunshine of the year.UV index
The average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 3 in December suggests the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the most humid month?
What is the average humidity in December?
What is the wettest month?
How much does it rain in December?
When does it start to snow?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the UV index reading in December?
Average temperature in December
Brownlee Crossroads, SC
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (51.6°F).
- Average low temperature in December: 39.7°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in December
Brownlee Crossroads, SC
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Brownlee Crossroads, SC
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Brownlee Crossroads, SC
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
Brownlee Crossroads, SC
- Average rainfall in December: 3.74"
The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in December
Brownlee Crossroads, SC
- Average rainfall days in December: 12.3 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is October (9.1 days).
Average snowfall in December
Brownlee Crossroads, SC
- Average snowfall in December: 0.12"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Brownlee Crossroads, SC
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Brownlee Crossroads, SC
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in December
Brownlee Crossroads, SC
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in December
Brownlee Crossroads, SC
- Average UV index in December: 3
The months with the highest UV index are June and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Brownlee Crossroads, SC
- Average cloud cover in December: 42
The months with the most cloud cover are February and December (Cloud cover 42).
The months with the least cloud cover are June and October (Cloud cover 29).
Average visibility in December
Brownlee Crossroads, SC
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Brownlee Crossroads, South Carolina, USA
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