December weather forecastGahanna, OH
December
Weather in December
December, the first month of the winter in Gahanna, is still a cold month, with an average temperature varying between 39.4°F (4.1°C) and 29.3°F (-1.5°C).Temperature
Gahanna's December weather comes with a decrease in average high-temperatures, moving from a chilly 49.6°F (9.8°C) in November to a cold 39.4°F (4.1°C). In Gahanna, December nights cool down to an average of 29.3°F (-1.5°C).Humidity
In Gahanna, the average relative humidity in December is 81%.Rainfall
In Gahanna, Ohio, in December, it is raining for 8.8 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, in Gahanna, Ohio, there are 139.3 rainfall days, and 20.31" (516mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In December, it is snowing for 4.5 days. Throughout December, 1.06" (27mm) of snow is accumulated. Throughout the year, there are 25.8 snowfall days, and 6.14" (156mm) of snow is accumulated.Daylight
December has the shortest days of the year in Gahanna, Ohio, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:34 am and sunset at 5:06 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:16 pm EST.
Sunshine
In December, the average sunshine is 3.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Gahanna, OH
- Average high temperature in December: 39.4°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Gahanna, OH
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Gahanna, OH
- Average wind speed in December: 8.8mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Gahanna, OH
- Average humidity in December: 81%
The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are April, October and November (74%).
Average rainfall in December
Gahanna, OH
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is September (1.02").
Average rainfall days in December
Gahanna, OH
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in December
Gahanna, OH
- Average snowfall in December: 1.06"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Gahanna, OH
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Gahanna, OH
- Average daylight in December: 9h and 24min
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 24min).
- Average sunshine in December: 3h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Gahanna, OH
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in December
Gahanna, OH
- 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, February, November and December (UV index 2).
Average cloud cover in December
Gahanna, OH
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Gahanna, OH
- 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).
