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 shift in the average high-temperature, falling from November's chilly 49.1°F (9.5°C) to a cold 39.6°F (4.2°C). In Costonia, the expected average low-temperature for December is a subzero cold 28°F (-2.2°C).Humidity
The average relative humidity in December is 83%.Rainfall
In Costonia, in December, during 12.1 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. In Costonia, during the entire year, the rain falls for 175.9 days and collects up to 31.22" (793mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 11.7 days. Throughout December, 3.43" (87mm) of snow is accumulated. Throughout the year, there are 56.5 snowfall days, and 19.41" (493mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:26 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 5:06 pm EST.
Sunshine
In Costonia, the average sunshine in December is 3.5h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Costonia. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 1 during December translates into the following directions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Stay sun-safe with clothing that is both closely woven and worn loosely. Be attentive! The reflective property of snow can nearly double 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 Costonia in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Costonia have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Costonia have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Costonia, OH
- Average high temperature in December: 39.6°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in December: 28°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in December
Costonia, OH
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Costonia, OH
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in December
Costonia, OH
- Average humidity in December: 83%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in December
Costonia, OH
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is November (2.17").
Average rainfall days in December
Costonia, OH
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is February (9.4 days).
Average snowfall in December
Costonia, OH
- Average snowfall in December: 3.43"
The month with the highest snowfall is January (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Costonia, OH
- Average snowfall days in December: 11.7 days
The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Costonia, OH
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 3min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Costonia, OH
- Average sunshine days in December: 10.6 days
The month with the most sunshine days is November (15.5 days).
The months with the least sunshine days are January and May (8.8 days).
Average UV index in December
Costonia, OH
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Costonia, OH
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Costonia, OH
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January and February (4mi).
Costonia, Ohio, USA
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