December weather forecastRiverton, CT
December
Weather in December
The first month of the winter, December, is also an icy month in Riverton, Connecticut, with an average temperature ranging between max 36.3°F (2.4°C) and min 25.7°F (-3.5°C).Temperature
With the onset of December, Riverton's average high-temperature adjusts, receding from November's frosty 46.6°F (8.1°C) to a cold 36.3°F (2.4°C). Throughout the month of December, Riverton sees a steady low-temperature average of 25.7°F (-3.5°C).Humidity
In Riverton, Connecticut, the average relative humidity in December is 80%.Rainfall
In December, the rain falls for 8.4 days. Throughout December, 1.3" (33mm) of precipitation is accumulated. In Riverton, during the entire year, the rain falls for 134.4 days and collects up to 15.67" (398mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Riverton, in December, during 6 snowfall days, 1.3" (33mm) of snow is typically accumulated. In Riverton, during the entire year, snow falls for 33.4 days and aggregates up to 7.32" (186mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 4:21 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:30 pm EST.
Sunshine
The average sunshine in December is 4.5h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health 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:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Riverton, CT
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in December
Riverton, 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
Riverton, CT
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Riverton, CT
- Average humidity in December: 80%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Riverton, CT
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is July (1.85").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in December
Riverton, CT
- Average rainfall days in December: 8.4 days
The months with the highest number of rainy days are May and July (15.3 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in December
Riverton, CT
- Average snowfall in December: 1.3"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Riverton, CT
- Average snowfall days in December: 6 days
The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Riverton, CT
- Average daylight in December: 9h and 12min
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 30min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Riverton, CT
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is January (19.4 days).
The months with the least sunshine days are April and May (13.1 days).
Average UV index in December
Riverton, CT
- Average UV index in December: 2
The month with the highest UV index is June (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
Riverton, CT
- Average cloud cover in December: 52
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Riverton, CT
- Average visibility in December: 6mi
The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).
