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 transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a fresh 50.5°F (10.3°C) in November to an icy 40.8°F (4.9°C). Throughout the nights in December, Riverside experiences an average low-temperature of 30.2°F (-1°C).Humidity
In December, the average relative humidity in Riverside, Rhode Island, is 76%.Rainfall
In Riverside, Rhode Island, during December, the rain falls for 11.3 days and regularly aggregates up to 2.28" (58mm) of precipitation. Throughout the year, there are 144.3 rainfall days, and 23.43" (595mm) of precipitation is accumulated.Snowfall
Months with snowfall in Riverside are January through May, November and December. In December, it is snowing for 3.9 days. Throughout December, 1.42" (36mm) of snow is accumulated. In Riverside, during the entire year, snow falls for 22 days and aggregates up to 7.83" (199mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:53 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:24 pm EST.
Sunshine
February and December, with an average of 4.8h 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, Rhode Island. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Boost your sun resistance with garments that are densely woven yet spacious. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
How cold is it in Riverside in December?
What is the average humidity in December in Riverside?
How many days does it rain in December in Riverside?
How much does it snow in Riverside in December?
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 is the month with the least sunshine in Riverside?
How long on average sun shines in December in Riverside?
When is the lowest UV index in Riverside?
What is the UV index reading in December in Riverside?
Average temperature in December
Riverside, RI
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (35.1°F).
- Average low temperature in December: 30.2°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in December
Riverside, RI
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Riverside, RI
- Average wind speed in December: 9.3mph
The windiest months (with the highest average wind speed) are January, February and March (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Riverside, RI
- Average humidity in December: 76%
The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Riverside, RI
- Average rainfall in December: 2.28"
The wettest month (with the highest rainfall) is April (2.4").
The driest month (with the least rainfall) is September (1.1").
Average rainfall days in December
Riverside, RI
- Average rainfall days in December: 11.3 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Riverside, RI
- Average snowfall in December: 1.42"
The month with the highest snowfall is February (2.01").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Riverside, RI
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is January (5.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Riverside, RI
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Riverside, RI
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in December
Riverside, RI
- 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, RI
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Riverside, RI
- 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, Rhode Island, USA
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