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 slight shift in the average high-temperature, dipping a bit from November's moderate 59.9°F (15.5°C) to a cool 52.5°F (11.4°C). Lyman reports an average low-temperature of 38.3°F (3.5°C) during the nights of December.Humidity
December is the most humid month, with an average relative humidity of 76%.Rainfall
December is the month with the most rainfall. Rain falls for 10 days and accumulates 3.35" (85mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. December is the month with the most snowfall. Snow falls for 0.5 days and accumulates 2.2" (56mm) of snow.Daylight
December has the shortest days of the year in Lyman, South Carolina, with an average of 9h and 54min of daylight.On the first day of December in Lyman, sunrise is at 7:18 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 5:27 pm EST.
Sunshine
The month with the least sunshine in Lyman is December, with an average of 5.3h of sunshine.UV index
January and December, with an average maximum UV index of 2, are months 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 radiation for ordinary individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
What is the temperature in December in Lyman?
What is the most humid month in Lyman?
What is the average humidity in December in Lyman?
What is the rainiest month in Lyman?
How much does it rain in Lyman in December?
When does it snow the most in Lyman?
How many days does it snow in December in Lyman?
What is the month with the shortest days in Lyman?
How many hours of daylight does Lyman have in December?
When are sunrise and sunset in December in Lyman?
What is the month with the least sunshine in Lyman?
How long on average sun shines in December in Lyman?
When is the lowest UV index in Lyman?
What is the UV index intensity in December in Lyman?
Average temperature in December
Lyman, SC
- Average high temperature in December: 52.5°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (48.9°F).
- Average low temperature in December: 38.3°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (32.9°F).
Average pressure in December
Lyman, 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 (29.99"Hg).
Average wind speed in December
Lyman, SC
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Lyman, SC
- Average humidity in December: 76%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (67%).
Average rainfall in December
Lyman, SC
- Average rainfall in December: 3.35"
The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.38").
Average rainfall days in December
Lyman, SC
- Average rainfall days in December: 10 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (8.2 days).
Average snowfall in December
Lyman, SC
- Average snowfall in December: 2.2"
The month with the highest snowfall is December (2.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Lyman, SC
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (1.6 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
Lyman, 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 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
Lyman, SC
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is October (22.3 days).
The month with the least sunshine days is August (13.3 days).
Average UV index in December
Lyman, SC
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Lyman, SC
- Average cloud cover in December: 43
The month with the most cloud cover is December (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 28).
Average visibility in December
Lyman, 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).
Lyman, South Carolina, USA
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