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
December suggests a modest reduction in the average high-temperature, shifting from a mild 55.9°F (13.3°C) in November to a frosty 44.2°F (6.8°C). Throughout December, Derby records an average temperature of 29.3°F (-1.5°C) at night.Humidity
In Derby, the average relative humidity in December is 67%.Rainfall
In December, the rain falls for 5.5 days. Throughout December, 0.91" (23mm) of precipitation is accumulated. In Derby, during the entire year, the rain falls for 126.5 days and collects up to 25" (635mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Derby, in December, during 3.2 snowfall days, 0.87" (22mm) of snow is typically accumulated. Throughout the year, there are 16.1 snowfall days, and 6.57" (167mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:25 am and sunset at 5:11 pm. On the last day of December, sunrise is at 7:43 am and sunset at 5:21 pm CST.
Sunshine
The average sunshine in December is 6.2h.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 low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold in Derby?
What is the average humidity in December?
How many days does it rain in December in Derby?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Derby have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Derby, KS
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (43.3°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in December
Derby, KS
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Derby, KS
- Average wind speed in December: 10.5mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in December
Derby, KS
- Average humidity in December: 67%
The month with the highest relative humidity is May (73%).
The months with the lowest relative humidity are July and October (62%).
Average rainfall in December
Derby, KS
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is May (4.65").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in December
Derby, KS
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in December
Derby, KS
- Average snowfall in December: 0.87"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Derby, KS
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is February (4.7 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, KS
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 6h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in December
Derby, KS
- Average sunshine days in December: 22.1 days
The month with the most sunshine days is January (22.8 days).
The month with the least sunshine days is May (12.6 days).
Average UV index in December
Derby, KS
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Derby, KS
- Average cloud cover in December: 31
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in December
Derby, KS
- 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).
Derby, Kansas, USA
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