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 arrival of December corresponds with a light shift in temperature, down from a cool 54.5°F (12.5°C) in November to a chilly 46.4°F (8°C). In the month of December, Riverview experiences an average low-temperature of 36°F (2.2°C).Humidity
In Riverview, the average relative humidity in December is 76%.Rainfall
In Riverview, in December, during 11.6 rainfall days, 3.07" (78mm) of precipitation is typically accumulated. Throughout the year, there are 167.5 rainfall days, and 35.35" (898mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In December, it is snowing for 2.1 days. Throughout December, 0.94" (24mm) of snow is accumulated. Throughout the year, in Riverview, Delaware, there are 12.5 snowfall days, and 5.94" (151mm) of snow is accumulated.Daylight
December has the shortest days of the year in Riverview, with an average of 9h and 30min of daylight.On the first day of December in Riverview, sunrise is at 7:02 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:49 pm EST.
Sunshine
In Riverview, the average sunshine in December is 5.1h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What is the usual temperature for Riverview in December?
What is the average humidity in December in Riverview?
How many days does it rain in December in Riverview?
How much does it snow in Riverview in December?
What is the month with the shortest days in Riverview?
What is the average length of the day in December in Riverview?
What time are sunrise and sunset in December in Riverview?
How many hours of sunshine does Riverview have in December?
What is the month with the lowest UV index in Riverview?
What is the UV index intensity in December in Riverview?
Average temperature in December
Riverview, DE
- Average high temperature in December: 46.4°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (40.3°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 (28.8°F).
Average pressure in December
Riverview, 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
Riverview, DE
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Riverview, DE
- Average humidity in December: 76%
The months with the highest relative humidity are May, August and September (79%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in December
Riverview, DE
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in December
Riverview, DE
- Average rainfall days in December: 11.6 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (9 days).
Average snowfall in December
Riverview, DE
- Average snowfall in December: 0.94"
The month with the highest snowfall is January (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Riverview, DE
- Average snowfall days in December: 2.1 days
The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Riverview, DE
- Average daylight in December: 9h and 3min
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 30min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Riverview, DE
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in December
Riverview, 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
Riverview, DE
- Average cloud cover in December: 45
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Riverview, 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).
Riverview, Delaware, USA
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