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 transition into December involves a small decrease in the average high-temperature, dipping slightly from a refreshing 60.8°F (16°C) in November to a fresh 54.3°F (12.4°C). Ruby's average low-temperature in the month of December is recorded at a wintry 40.1°F (4.5°C).Humidity
The months with the highest humidity in Ruby are May, September and December, with an average relative humidity of 75%.Rainfall
In Ruby, in December, it is raining for 10.8 days, with typically 2.83" (72mm) of accumulated precipitation. In Ruby, during the entire year, the rain falls for 149.5 days and collects up to 28.23" (717mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In December, it is snowing for 0.1 days. Throughout December, 0.16" (4mm) of snow is accumulated. Throughout the year, in Ruby, there are 1.9 snowfall days, and 1.69" (43mm) of snow is accumulated.Daylight
December has the shortest days of the year in Ruby, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 7:10 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:20 pm EST.
Sunshine
With an average of 5.5h of sunshine, December has the least sunshine of the year.UV index
In Ruby, South Carolina, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 3 during December translates into the following directions:
Take necessary precautions - Suggestions to elude sunburn are provided. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Ruby in December?
What are the most humid months in Ruby?
What is the average humidity in December in Ruby?
How much does it rain in Ruby in December?
How much does it snow in Ruby in December?
What is the month with the shortest days in Ruby?
How many hours of daylight does Ruby have in December?
What time are sunrise and sunset in December in Ruby?
What is the month with the least sunshine in Ruby?
How long on average sun shines in December in Ruby?
What is the UV index reading in December in Ruby?
Average temperature in December
Ruby, SC
- Average high temperature in December: 54.3°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (50.5°F).
- Average low temperature in December: 40.1°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (35.6°F).
Average pressure in December
Ruby, 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 (29.97"Hg).
Average wind speed in December
Ruby, SC
- Average wind speed in December: 6.7mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Ruby, SC
- Average humidity in December: 75%
The months with the highest relative humidity are May, September and December (75%).
The months with the lowest relative humidity are January, July and November (71%).
Average rainfall in December
Ruby, SC
- Average rainfall in December: 2.83"
The wettest month (with the highest rainfall) is August (2.91").
The driest months (with the least rainfall) are January and October (1.77").
Average rainfall days in December
Ruby, SC
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is October (8.2 days).
Average snowfall in December
Ruby, SC
- Average snowfall in December: 0.16"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Ruby, SC
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Ruby, SC
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Ruby, SC
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in December
Ruby, SC
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Ruby, SC
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Ruby, SC
- 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).
Ruby, South Carolina, USA
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