December weather forecastSaybrook Manor, CT
December
Weather in December
December is characterized by the onset of winter in Saybrook Manor, Connecticut. The end of the year sets in with the chill of the cold season, and citizens can expect frequent frosty mornings. Compared to November, the average snowfall more than triples to 1.34" (34mm). These winter conditions, accompanied by the shortest daylight hours of the year, contribute to a distinctly festive atmosphere. The frequency of snowfall lends itself to various winter activities, rounding off the year's weather cycle.Temperature
A subtle change in temperatures is noted as November gives way to December, with average highs reducing from a cool 50.7°F (10.4°C) to a wintry 41.9°F (5.5°C). Throughout December nights, Saybrook Manor experiences a consistent temperature average of 32.4°F (0.2°C).Humidity
The average relative humidity in December in Saybrook Manor is 75%.Rainfall
December is the month with the most rainfall in Saybrook Manor. Rain falls for 13 days and accumulates 3.66" (93mm) of precipitation.Snowfall
Months with snowfall in Saybrook Manor are January through May, November and December. In December, in Saybrook Manor, it is snowing for 4.4 days. Throughout December, 1.34" (34mm) of snow is accumulated. In Saybrook Manor, during the entire year, snow falls for 24.2 days and aggregates up to 9.53" (242mm) of snow.Ocean temperature
In December, the average ocean temperature is 48.9°F (9.4°C).Note: Swimming in 48.9°F (9.4°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:56 am and sunset at 4:21 pm. On the last day of December, in Saybrook Manor, sunrise is at 7:15 am and sunset at 4:30 pm EST.
Sunshine
The months with the least sunshine are February and December, with an average of 4.8h of sunshine.UV index
The months with the lowest UV index in Saybrook Manor are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. It's recommended to limit sun exposure when its radiation is at its peak during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Saybrook Manor, CT
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).
Average pressure in December
Saybrook Manor, CT
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Saybrook Manor, CT
- Average wind speed in December: 10.6mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in December
Saybrook Manor, CT
- Average humidity in December: 75%
The months with the highest relative humidity are May, June and July (78%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Saybrook Manor, CT
- Average rainfall in December: 3.66"
The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Saybrook Manor, CT
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9 days).
Average snowfall in December
Saybrook Manor, CT
- Average snowfall in December: 1.34"
The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Saybrook Manor, CT
- Average snowfall days in December: 4.4 days
The month with the highest number of snowfall days is February (7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Saybrook Manor, CT
- Average sea temperature in December: 48.9°F
The best month for swimming (with the highest average sea temperature) is August (72.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).
Average daylight in December /
Average sunshine in December
Saybrook Manor, CT
- Average daylight in December: 9h and 18min
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 48min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Saybrook Manor, CT
- Average sunshine days in December: 14.8 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is July (11.7 days).
Average UV index in December
Saybrook Manor, 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
Saybrook Manor, CT
- Average cloud cover in December: 48
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Saybrook Manor, 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).
