December weather forecastElsmere, DE
December
Weather in December
December in Elsmere marks the full return of winter, with a notable drop in temperature and increased snowfall. The contrast between the decreasing daylight hours and the increasing cloud percentage is stark. The city can expect an average of 3.35" (85mm) of rainfall, the highest for the year, spread over just 11 days. The waning sunshine and prevailing winter chill prepare the city for the welcoming of a new year.Temperature
December's onset corresponds with a shift in the average high-temperature, moving from a cool 53.4°F (11.9°C) in November to a frosty 44.2°F (6.8°C). During December, the nighttime temperature averages to a wintry 32.9°F (0.5°C).Humidity
In December, the average relative humidity is 77%.Rainfall
The month with the most rainfall is December, when the rain falls for 11 days and typically aggregates up to 3.35" (85mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. In Elsmere, in December, snow falls for 3 days, with typically accumulated 1.26" (32mm) of snow. Throughout the year, there are 17.8 snowfall days, and 10.28" (261mm) of snow is accumulated.Daylight
December has the shortest days of the year in Elsmere, Delaware, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:48 pm EST.
Sunshine
In Elsmere, the average sunshine in December is 5.2h.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 estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Elsmere, DE
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in December
Elsmere, DE
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Elsmere, DE
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Elsmere, DE
- Average humidity in December: 77%
The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Elsmere, DE
- Average rainfall in December: 3.35"
The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in December
Elsmere, DE
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in December
Elsmere, DE
- Average snowfall in December: 1.26"
The month with the highest snowfall is March (3.54").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Elsmere, DE
- Average snowfall days in December: 3 days
The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Elsmere, DE
- 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: 5h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Elsmere, DE
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in December
Elsmere, DE
- 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
Elsmere, DE
- Average cloud cover in December: 45
The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in December
Elsmere, DE
- 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).
