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's onset introduces a mild reduction in the average high-temperature, from a moderate 60.1°F (15.6°C) in November to a fresh 52.9°F (11.6°C). Norris's temperature in December lowers to a consistent average of 38.5°F (3.6°C) during the nights.Humidity
December is the most humid month in Norris, with an average relative humidity of 77%.Rainfall
In Norris, in December, it is raining for 10.3 days, with typically 1.46" (37mm) of accumulated precipitation. In Norris, during the entire year, the rain falls for 140.2 days and collects up to 16.61" (422mm) of precipitation.Snowfall
January through March and December are months with snowfall. December is the month with the most snowfall in Norris. Snow falls for 0.6 days and accumulates 0.31" (8mm) of snow.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year in Norris.On the first day of December, sunrise is at 7:20 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:30 pm EST.
Sunshine
December has the least sunshine of the year in Norris, with an average of 5.4h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: The UV index of 2 in December translates into these instructions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. The solar radiation around mid-day is intense; avoid the Sun and stay safe. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature in Norris?
What is the most humid month in Norris?
What is the average humidity in December in Norris?
How many days does it rain in December in Norris?
What is the snowiest month in Norris?
When does it start to snow in Norris?
What is the month with the shortest days in Norris?
How many hours of daylight does Norris have in December?
What time are sunrise and sunset in December in Norris?
What is the month with the least sunshine in Norris?
How many hours of sunshine does Norris have in December?
What is the month with the lowest UV index in Norris?
How high is the UV index in December in Norris?
Average temperature in December
Norris, SC
- Average high temperature in December: 52.9°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in December: 38.5°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (33.8°F).
Average pressure in December
Norris, SC
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
Norris, SC
- Average wind speed in December: 5.8mph
The windiest months (with the highest average wind speed) are February and April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Norris, SC
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
Norris, SC
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is August (2.01").
The driest month (with the least rainfall) is September (0.71").
Average rainfall days in December
Norris, SC
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is October (6.5 days).
Average snowfall in December
Norris, SC
- Average snowfall in December: 0.31"
The month with the highest snowfall is December (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Norris, SC
- Average snowfall days in December: 0.6 days
The months with the highest number of snowfall days are January and February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Norris, 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: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Norris, SC
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is October (22.3 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in December
Norris, 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
Norris, SC
- Average cloud cover in December: 41
The month with the most cloud cover is February (Cloud cover 42).
The months with the least cloud cover are June and July (Cloud cover 27).
Average visibility in December
Norris, 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).
Norris, South Carolina, USA
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