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
December heralds a minor drop in average high-temperature, sliding from November's enjoyable 63.1°F (17.3°C) to a mild 57°F (13.9°C). Throughout the nights in December, Saint Matthews experiences an average low-temperature of 42.6°F (5.9°C).Humidity
In December, the average relative humidity in Saint Matthews, South Carolina, is 75%.Rainfall
December is the month with the most rainfall. Rain falls for 11 days and accumulates 3.58" (91mm) of precipitation.Snowfall
January, February, November and December are months with snowfall in Saint Matthews. In Saint Matthews, in December, snow falls for 0.1 days, with typically accumulated 0.2" (5mm) of snow. In Saint Matthews, during the entire year, snow falls for 1.7 days and aggregates up to 0.87" (22mm) of snow.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 7:10 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:25 pm EST.
Sunshine
With an average of 5.5h of sunshine, December has the least sunshine of the year in Saint Matthews.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 3 in December translates into these instructions:
Guard yourself - Precautionary measures against sun damage are advocated. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
What are December temperatures in Saint Matthews?
What is the average humidity in December in Saint Matthews?
What is the rainiest month in Saint Matthews?
How many days does it rain in December in Saint Matthews?
How many days does it snow in December in Saint Matthews?
What is the month with the shortest days in Saint Matthews?
What is the average length of the day in December in Saint Matthews?
What time are sunrise and sunset in December in Saint Matthews?
What is the month with the least sunshine in Saint Matthews?
How long on average sun shines in December in Saint Matthews?
When is the lowest UV index in Saint Matthews?
What is the UV index intensity in December in Saint Matthews?
Average temperature in December
Saint Matthews, SC
- Average high temperature in December: 57°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (53.6°F).
- Average low temperature in December: 42.6°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in December
Saint Matthews, 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
Saint Matthews, SC
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Saint Matthews, SC
- Average humidity in December: 75%
The month with the highest relative humidity is May (76%).
The months with the lowest relative humidity are January and November (71%).
Average rainfall in December
Saint Matthews, SC
- Average rainfall in December: 3.58"
The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is November (1.85").
Average rainfall days in December
Saint Matthews, SC
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in December
Saint Matthews, SC
- Average snowfall in December: 0.2"
The month with the highest snowfall is January (0.35").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in December
Saint Matthews, SC
- Average snowfall days in December: 0.1 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 and October (0 days).
Average daylight in December /
Average sunshine in December
Saint Matthews, SC
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- 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
Saint Matthews, SC
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is August (9.4 days).
Average UV index in December
Saint Matthews, 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 and December (UV index 3).
Average cloud cover in December
Saint Matthews, SC
- Average cloud cover in December: 40
The months with the most cloud cover are February and December (Cloud cover 40).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in December
Saint Matthews, 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).
Saint Matthews, South Carolina, USA
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