December weather forecastBlenheim, SC
December
Weather in December
December, the first month of the winter in Blenheim, is still a cool month, with temperature in the range of an average low of 40.3°F (4.6°C) and an average high of 55°F (12.8°C).Temperature
December's arrival signals a moderate reduction in the average high-temperature, easing from a comfortable 61.3°F (16.3°C) in November to a cool 55°F (12.8°C). Blenheim, during the month of December, experiences an average low-temperature of 40.3°F (4.6°C).Humidity
The months with the highest humidity are May, August, September and December, with an average relative humidity of 76%.Rainfall
In Blenheim, during December, the rain falls for 10.5 days and regularly aggregates up to 2.99" (76mm) of precipitation. In Blenheim, during the entire year, the rain falls for 157 days and collects up to 32.36" (822mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Blenheim, South Carolina, in December, snow falls for 0.1 days, with typically accumulated 0.16" (4mm) of snow. In Blenheim, during the entire year, snow falls for 1.8 days and aggregates up to 1.02" (26mm) of snow.Daylight
The month with the shortest days in Blenheim is December, 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 5:08 pm. On the last day of December, in Blenheim, sunrise is at 7:25 am and sunset at 5:18 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5.5h of sunshine.UV index
The average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 3 during December translates into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Blenheim, SC
- Average high temperature in December: 55°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 (50.9°F).
- Average low temperature in December: 40.3°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 (36°F).
Average pressure in December
Blenheim, 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 (29.96"Hg).
Average wind speed in December
Blenheim, SC
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Blenheim, SC
- Average humidity in December: 76%
The months with the highest relative humidity are May, August, September and December (76%).
The month with the lowest relative humidity is November (72%).
Average rainfall in December
Blenheim, SC
- Average rainfall in December: 2.99"
The wettest month (with the highest rainfall) is August (3.98").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in December
Blenheim, SC
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in December
Blenheim, SC
- Average snowfall in December: 0.16"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Blenheim, 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
Blenheim, 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 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Blenheim, SC
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is October (21.3 days).
The month with the least sunshine days is July (8.4 days).
Average UV index in December
Blenheim, 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
Blenheim, SC
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 29).
Average visibility in December
Blenheim, 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).
