December weather forecastOlanta, SC
December
Weather in December
December, the first month of the winter in Olanta, is still a mild month, with an average temperature varying between 41.9°F (5.5°C) and 57.4°F (14.1°C).Temperature
A modest decline in the average high-temperature is seen during December, decreasing from an enjoyable 63.1°F (17.3°C) in November to a moderate 57.4°F (14.1°C). The average temperature drops to a cold 41.9°F (5.5°C) during the night in the month of December.Humidity
In Olanta, the average relative humidity in December is 77%.Rainfall
In December, the rain falls for 10.6 days. Throughout December, 3.35" (85mm) of precipitation is accumulated. In Olanta, during the entire year, the rain falls for 170.2 days and collects up to 34.06" (865mm) of precipitation.Snowfall
March through December are months without snowfall.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 7:07 am and sunset at 5:10 pm. On the last day of December, sunrise is at 7:24 am and sunset at 5:21 pm EST.
Sunshine
With an average of 5.5h of sunshine, December has the least sunshine of the year.UV index
January, February and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 3 in December translates into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Olanta, SC
- Average high temperature in December: 57.4°F
The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (53.4°F).
- Average low temperature in December: 41.9°F
The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (37.6°F).
Average pressure in December
Olanta, SC
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Olanta, SC
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Olanta, SC
- Average humidity in December: 77%
The months with the highest relative humidity are May, August and September (78%).
The months with the lowest relative humidity are January and November (73%).
Average rainfall in December
Olanta, SC
- Average rainfall in December: 3.35"
The wettest month (with the highest rainfall) is August (4.41").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in December
Olanta, SC
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is July (21.8 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in December
Olanta, SC
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.39").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Olanta, SC
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Olanta, SC
- Average daylight in December: 9h and 54min
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 30min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Olanta, SC
- Average sunshine days in December: 19.5 days
The months with the most sunshine days are October and November (20.4 days).
The month with the least sunshine days is July (6.5 days).
Average UV index in December
Olanta, SC
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in December
Olanta, SC
- Average cloud cover in December: 41
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in December
Olanta, 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).
