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 sea temperature 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
Riverside's weather changes with the onset of December, slightly falling from a cool 50.9°F (10.5°C) in November to a wintry 41.9°F (5.5°C). Riverside, in December, logs an average low-temperature of 33.4°F (0.8°C), a subtle step down from daytime readings.Humidity
February, May, June and December, with an average relative humidity of 75%, are the most humid months.Rainfall
In Riverside, in December, during 12.4 rainfall days, 4.09" (104mm) of precipitation is typically accumulated. Throughout the year, in Riverside, there are 166.6 rainfall days, and 38.07" (967mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Riverside, in December, during 4.4 snowfall days, 1.81" (46mm) of snow is typically accumulated. In Riverside, during the entire year, snow falls for 24.8 days and aggregates up to 9.33" (237mm) of snow.Ocean temperature
In December, the average ocean temperature in Riverside is 47.1°F (8.4°C).Note: If planning to swim in 47.1°F (8.4°C) under 50°F (10°C), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 55.4°F (13°C) is not much warmer.
Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Riverside.On the first day of December, sunrise is at 7:00 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:36 pm EST.
Sunshine
February and December, with an average of 4.7h of sunshine, are months with the least sunshine.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Riverside. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 2 during December leads to these advisories:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
Is December cold in Riverside?
What are the most humid months in Riverside?
What is the average humidity in December in Riverside?
How much does it rain in Riverside in December?
How many days does it snow in December in Riverside?
What is the water temperature in December in Riverside?
What is the month with the shortest days in Riverside?
What is the average length of the day in December in Riverside?
When are sunrise and sunset in December in Riverside?
What are the months with the least sunshine in Riverside?
How many hours of sunshine does Riverside have in December?
What is the month with the lowest UV index in Riverside?
What is the UV index reading in December in Riverside?
Average temperature in December
Riverside, CT
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in December: 33.4°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in December
Riverside, CT
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Riverside, CT
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
Riverside, CT
- Average humidity in December: 75%
The months with the highest relative humidity are February, May, June and December (75%).
The month with the lowest relative humidity is August (71%).
Average rainfall in December
Riverside, CT
- Average rainfall in December: 4.09"
The wettest month (with the highest rainfall) is July (4.13").
The driest month (with the least rainfall) is January (2.44").
Average rainfall days in December
Riverside, CT
- Average rainfall days in December: 12.4 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in December
Riverside, CT
- Average snowfall in December: 1.81"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Riverside, CT
- Average snowfall days in December: 4.4 days
The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Riverside, CT
- Average sea temperature in December: 47.1°F
The best month for swimming (with the highest average sea temperature) is August (73.1°F).
The coldest month (with the lowest average sea temperature) is February (39.5°F).
Average daylight in December /
Average sunshine in December
Riverside, CT
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in December
Riverside, CT
- Average sunshine days in December: 14.8 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in December
Riverside, CT
- 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, March, November and December (UV index 2).
Average cloud cover in December
Riverside, CT
- Average cloud cover in December: 49
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Riverside, CT
- 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).
Riverside, Connecticut, USA
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