December weather forecastTrotwood, OH
December
Weather in December
December, the first month of the winter in Trotwood, is still a cold month, with an average temperature ranging between max 39.2°F (4°C) and min 28.9°F (-1.7°C).Temperature
The decrease of average high-temperatures is mild in December, with a decline from a chilly 49.1°F (9.5°C) in November to a cold 39.2°F (4°C). In the month of December, the average low-temperature usually rests at a subzero cold 28.9°F (-1.7°C).Humidity
January, February and December, with an average relative humidity of 82%, are the most humid months.Rainfall
In Trotwood, in December, during 9.4 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. Throughout the year, there are 149.5 rainfall days, and 23.9" (607mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 5.9 days. Throughout December, 1.38" (35mm) of snow is accumulated. In Trotwood, during the entire year, snow falls for 26.5 days and aggregates up to 7.68" (195mm) of snow.Daylight
The month with the shortest days in Trotwood, Ohio, is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:39 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 5:22 pm EST.
Sunshine
The average sunshine in December is 4.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. To protect against the Sun's most potent rays, avoid direct exposure around midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. 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
Average temperature in December
Trotwood, OH
- Average high temperature in December: 39.2°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in December: 28.9°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in December
Trotwood, 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 (29.93"Hg).
Average wind speed in December
Trotwood, OH
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Trotwood, OH
- Average humidity in December: 82%
The months with the highest relative humidity are January, February and December (82%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Trotwood, OH
- Average rainfall in December: 1.81"
The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are September and November (1.5").
Average rainfall days in December
Trotwood, OH
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in December
Trotwood, OH
- Average snowfall in December: 1.38"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Trotwood, OH
- Average snowfall days in December: 5.9 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Trotwood, OH
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 6min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Trotwood, OH
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in December
Trotwood, OH
- Average UV index in December: 2
The months with the highest UV index are 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
Trotwood, OH
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Trotwood, 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).
