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
The decrease of average high-temperatures is mild in December in Delaware, with a decline from a chilly 48.6°F (9.2°C) in November to an icy 38.3°F (3.5°C). Delaware records a steady low-temperature average of 28.6°F (-1.9°C) during December.Humidity
In December, the average relative humidity is 82%.Rainfall
In Delaware, in December, during 11.9 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. In Delaware, during the entire year, the rain falls for 172.1 days and collects up to 32.01" (813mm) of precipitation.Snowfall
Months with snowfall in Delaware are January through April, October through December. In Delaware, Ohio, in December, snow falls for 10.3 days, with typically accumulated 2.87" (73mm) of snow. In Delaware, during the entire year, snow falls for 46.8 days and aggregates up to 13.58" (345mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:36 am and sunset at 5:06 pm. On the last day of December, in Delaware, sunrise is at 7:54 am and sunset at 5:16 pm EST.
Sunshine
The average sunshine in December in Delaware is 4.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Delaware. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. 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. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Delaware during December?
What is the average humidity in December in Delaware?
How much does it rain in Delaware in December?
How many days does it snow in December in Delaware?
What is the month with the shortest days in Delaware?
How many hours of daylight does Delaware have in December?
What time are sunrise and sunset in December in Delaware?
How many hours of sunshine does Delaware have in December?
When is the lowest UV index in Delaware?
What is the UV index intensity in December in Delaware?
Average temperature in December
Delaware, OH
- Average high temperature in December: 38.3°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in December: 28.6°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in December
Delaware, OH
- Average pressure in December: 30.12"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Delaware, OH
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in December
Delaware, OH
- Average humidity in December: 82%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Delaware, OH
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Delaware, OH
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (10 days).
Average snowfall in December
Delaware, OH
- Average snowfall in December: 2.87"
The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Delaware, OH
- Average snowfall days in December: 10.3 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Delaware, OH
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Delaware, OH
- Average sunshine days in December: 11.6 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in December
Delaware, OH
- Average UV index in December: 2
The months with the highest UV index are 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
Delaware, OH
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Delaware, OH
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Delaware, Ohio, USA
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