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
Stepping into December, Rock Creek observes a temperature decline, with the average high falling from November's frosty 46.2°F (7.9°C) to an icy 37°F (2.8°C). Nights in December exhibit a minor reduction to an average low temperature of 29.8°F (-1.2°C).Humidity
In Rock Creek, the average relative humidity in December is 84%.Rainfall
In Rock Creek, in December, during 10.9 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, there are 181 rainfall days, and 36.34" (923mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Rock Creek, in December, snow falls for 15.4 days, with typically accumulated 5.08" (129mm) of snow. Throughout the year, there are 71.4 snowfall days, and 25.28" (642mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:31 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 5:03 pm EST.
Sunshine
In Rock Creek, the average sunshine in December is 2.9h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 1 during December, leads to the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Rock Creek have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Rock Creek have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Rock Creek, OH
- Average high temperature in December: 37°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 29.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in December
Rock Creek, OH
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Rock Creek, OH
- Average wind speed in December: 11.3mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in December
Rock Creek, OH
- Average humidity in December: 84%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July, August and September (78%).
Average rainfall in December
Rock Creek, OH
- Average rainfall in December: 2.72"
The wettest month (with the highest rainfall) is June (3.94").
The driest months (with the least rainfall) are February and November (2.4").
Average rainfall days in December
Rock Creek, OH
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in December
Rock Creek, OH
- Average snowfall in December: 5.08"
The month with the highest snowfall is January (6.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rock Creek, OH
- Average snowfall days in December: 15.4 days
The month with the highest number of snowfall days is January (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rock Creek, OH
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in December
Rock Creek, OH
- Average sunshine days in December: 6.7 days
The month with the most sunshine days is September (11 days).
The month with the least sunshine days is January (5.9 days).
Average UV index in December
Rock Creek, OH
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Rock Creek, OH
- Average cloud cover in December: 71
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Rock Creek, OH
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Rock Creek, Ohio, USA
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