December weather forecastDerby, OH
December
Weather in December
December, the first month of the winter in Derby, is also a wintry month, with temperature in the range of an average low of 29.1°F (-1.6°C) and an average high of 39.6°F (4.2°C).Temperature
With December's arrival, Derby sees a decrease in average high-temperatures, moving from a frosty 49.8°F (9.9°C) in November to a wintry 39.6°F (4.2°C). During December, Derby experiences an average low-temperature of 29.1°F (-1.6°C) at night.Humidity
In Derby, Ohio, the average relative humidity in December is 82%.Rainfall
In Derby, in December, it is raining for 9 days, with typically 1.1" (28mm) of accumulated precipitation. Throughout the year, there are 134.1 rainfall days, and 14.53" (369mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Derby. In Derby, in December, during 6.1 snowfall days, 0.75" (19mm) of snow is typically accumulated. In Derby, during the entire year, snow falls for 28.8 days and aggregates up to 4.45" (113mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of December in Derby, sunrise is at 7:35 am and sunset at 5:08 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:18 pm EST.
Sunshine
In December, the average sunshine in Derby 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 value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Derby, OH
- Average high temperature in December: 39.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 29.1°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Derby, OH
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Derby, OH
- Average wind speed in December: 9mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Derby, OH
- Average humidity in December: 82%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Derby, OH
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is May (1.81").
The driest month (with the least rainfall) is September (0.87").
Average rainfall days in December
Derby, OH
- Average rainfall days in December: 9 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in December
Derby, OH
- Average snowfall in December: 0.75"
The month with the highest snowfall is January (1.22").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Derby, OH
- Average snowfall days in December: 6.1 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Derby, 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 month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Derby, OH
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in December
Derby, 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
Derby, 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 28).
Average visibility in December
Derby, 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).
