December weather forecastBethel, DE
December
Weather in December
The first month of the winter, December, is also a frosty month in Bethel, Delaware, with an average temperature varying between 47.5°F (8.6°C) and 36°F (2.2°C).Temperature
The average high-temperature shows a slight dip in December, from November's mild 55.4°F (13°C) to a frosty 47.5°F (8.6°C). An average minimum temperature of 36°F (2.2°C) marks the month of December.Humidity
In Bethel, the average relative humidity in December is 78%.Rainfall
In Bethel, during December, the rain falls for 6 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, there are 95.8 rainfall days, and 8.03" (204mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Bethel, in December, snow falls for 0.9 days, with typically accumulated 0.12" (3mm) of snow. Throughout the year, there are 5.6 snowfall days, and 0.94" (24mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December in Bethel, sunrise is at 7:01 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:51 pm EST.
Sunshine
The average sunshine in December in Bethel is 5.2h.UV index
The months with the lowest UV index in Bethel are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Around midday, solar radiation is most harmful; hence, exposure should be limited. Experience reduced UV exposure by about half when donning a wide-brim hat. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bethel, DE
- Average high temperature in December: 47.5°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in December: 36°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in December
Bethel, DE
- Average pressure in December: 30.1"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
Bethel, DE
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is February (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Bethel, DE
- Average humidity in December: 78%
The months with the highest relative humidity are May, August and September (80%).
The month with the lowest relative humidity is January (74%).
Average rainfall in December
Bethel, DE
- Average rainfall in December: 0.59"
The wettest months (with the highest rainfall) are July and August (1.06").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days in December
Bethel, DE
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is July (12 days).
The month with the least rainy days is November (4.9 days).
Average snowfall in December
Bethel, DE
- Average snowfall in December: 0.12"
The month with the highest snowfall is January (0.35").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Bethel, DE
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is January (2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Bethel, DE
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- 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: 5h and 6min).
Average sunshine days in December
Bethel, DE
- Average sunshine days in December: 23.8 days
The month with the most sunshine days is November (23.9 days).
The month with the least sunshine days is July (15.7 days).
Average UV index in December
Bethel, 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 and December (UV index 2).
Average cloud cover in December
Bethel, DE
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Bethel, 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).
