December weather forecastMcDonough, GA
December
Weather in December
December in McDonough is the epitome of the year-end festive feel, complete with chilly temperatures, increased humidity, and longer nights. December brings temperatures ranging from 40.3°F (4.6°C) to 55°F (12.8°C), perfect for cozy sweaters and simmering hot cocoa. The city sees a moderate increase in rainfall levels to 3.78" (96mm), though this is scattered over 13.2 days. Holiday decorations and festive events are commonplace across the city, creating a cheerful ambiance despite the cooler conditions.Temperature
The arrival of December is marked by a minor reduction in average high-temperature, sliding from a refreshing 62.2°F (16.8°C) in November to a fresh 55°F (12.8°C). McDonough, during December nights, observes an average temperature of 40.3°F (4.6°C).Humidity
With an average relative humidity of 77%, December is the most humid month.Rainfall
In McDonough, in December, during 13.2 rainfall days, 3.78" (96mm) of precipitation is typically accumulated. In McDonough, during the entire year, the rain falls for 179.5 days and collects up to 40.08" (1018mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In McDonough, during December, snow falls for 0.3 days and regularly aggregates up to 0.08" (2mm) of snow. In McDonough, during the entire year, snow falls for 2.7 days and aggregates up to 1.02" (26mm) of snow.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 7:23 am and sunset at 5:28 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:39 pm EST.
Sunshine
With an average of 5.1h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: During December, 3 as the daily maximum UV index converts into the following advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
McDonough, GA
- Average high temperature in December: 55°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (51.6°F).
- Average low temperature in December: 40.3°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (35.4°F).
Average pressure in December
McDonough, GA
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
McDonough, GA
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in December
McDonough, GA
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are October and November (72%).
Average rainfall in December
McDonough, GA
- Average rainfall in December: 3.78"
The wettest month (with the highest rainfall) is August (5.24").
The driest month (with the least rainfall) is October (2.17").
Average rainfall days in December
McDonough, GA
- Average rainfall days in December: 13.2 days
The month with the highest number of rainy days is July (22.3 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in December
McDonough, GA
- Average snowfall in December: 0.08"
The month with the highest snowfall is January (0.39").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
McDonough, GA
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (0.9 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
McDonough, GA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 5h and 6min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
McDonough, GA
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (7.1 days).
Average UV index in December
McDonough, GA
- Average UV index in December: 3
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
McDonough, GA
- Average cloud cover in December: 45
The months with the most cloud cover are February and December (Cloud cover 45).
The months with the least cloud cover are June and October (Cloud cover 31).
Average visibility in December
McDonough, GA
- 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).
