December weather forecastLongtown, SC
December
Weather in December
December, the first month of the winter in Longtown, is still a mild month, with an average temperature ranging between max 55.6°F (13.1°C) and min 41.5°F (5.3°C).Temperature
December's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from November's comfortable 61.7°F (16.5°C) to a still refreshing 55.6°F (13.1°C). An average low-temperature of 41.5°F (5.3°C) is recorded during the nights in December in Longtown, South Carolina.Humidity
The average relative humidity in December is 74%.Rainfall
In Longtown, during December, the rain falls for 10.5 days and regularly aggregates up to 3.27" (83mm) of precipitation. Throughout the year, there are 157 rainfall days, and 31.54" (801mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Longtown, in December, snow falls for 0.1 days, with typically accumulated 0.16" (4mm) of snow. In Longtown, during the entire year, snow falls for 1.4 days and aggregates up to 0.75" (19mm) of snow.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of December in Longtown, sunrise is at 7:11 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:23 pm EST.
Sunshine
The month with the least sunshine in Longtown, South Carolina, is December, with an average of 5.5h of sunshine.UV index
In December, the average daily maximum UV index in Longtown is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: During December, 3 as the daily maximum UV index converts into the following advice:
Be vigilant - Preventing sunburn is recommended. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Longtown, SC
- Average high temperature in December: 55.6°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (52.2°F).
- Average low temperature in December: 41.5°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
Longtown, SC
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Longtown, SC
- Average wind speed in December: 7.1mph
The windiest months (with the highest average wind speed) are February and April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Longtown, SC
- Average humidity in December: 74%
The month with the highest relative humidity is May (75%).
The months with the lowest relative humidity are January and November (70%).
Average rainfall in December
Longtown, SC
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is August (3.66").
The driest months (with the least rainfall) are January and November (1.97").
Average rainfall days in December
Longtown, SC
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is October (8.2 days).
Average snowfall in December
Longtown, SC
- Average snowfall in December: 0.16"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Longtown, SC
- Average snowfall days in December: 0.1 days
The months with the highest number of snowfall days are January and February (0.5 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
Longtown, 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: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Longtown, SC
- Average sunshine days in December: 19.3 days
The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is July (8.9 days).
Average UV index in December
Longtown, 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
Longtown, 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 27).
Average visibility in December
Longtown, 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).
