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
With December's arrival, Yorklyn sees a decrease in average high-temperatures, moving from a cool 52°F (11.1°C) in November to a frosty 43°F (6.1°C). Yorklyn cools down to an average low-temperature of 31.8°F (-0.1°C) throughout the month of December.Humidity
In Yorklyn, the average relative humidity in December is 78%.Rainfall
In December, in Yorklyn, the rain falls for 9.4 days. Throughout December, 1.54" (39mm) of precipitation is accumulated. Throughout the year, in Yorklyn, there are 135 rainfall days, and 17.76" (451mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. In Yorklyn, in December, during 2.4 snowfall days, 0.79" (20mm) of snow is typically accumulated. Throughout the year, there are 16.6 snowfall days, and 5.47" (139mm) of snow is accumulated.Daylight
The month with the shortest days in Yorklyn, Delaware, is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:05 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:48 pm EST.
Sunshine
In Yorklyn, the average sunshine in December is 5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Yorklyn. 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, a daily UV index of 2 turns into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
Is December cold in Yorklyn?
What is the average humidity in December in Yorklyn?
How many days does it rain in December in Yorklyn?
How much does it snow in Yorklyn in December?
What is the month with the shortest days in Yorklyn?
How many hours of daylight does Yorklyn have in December?
When are sunrise and sunset in December in Yorklyn?
How long on average sun shines in December in Yorklyn?
What is the month with the lowest UV index in Yorklyn?
How high is the UV index in December in Yorklyn?
Average temperature in December
Yorklyn, DE
- Average high temperature in December: 43°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in December: 31.8°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in December
Yorklyn, DE
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Yorklyn, DE
- Average wind speed in December: 8.1mph
The windiest months (with the highest average wind speed) are January, February and March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Yorklyn, DE
- Average humidity in December: 78%
The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (74%).
Average rainfall in December
Yorklyn, DE
- Average rainfall in December: 1.54"
The wettest month (with the highest rainfall) is August (2.36").
The driest month (with the least rainfall) is November (1.06").
Average rainfall days in December
Yorklyn, DE
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in December
Yorklyn, DE
- Average snowfall in December: 0.79"
The month with the highest snowfall is March (1.5").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Yorklyn, DE
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Yorklyn, DE
- Average daylight in December: 9h and 2min
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 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Yorklyn, DE
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in December
Yorklyn, 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
Yorklyn, DE
- Average cloud cover in December: 46
The months with the most cloud cover are February, March and May (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Yorklyn, DE
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Yorklyn, Delaware, USA
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