December weather forecastProspect, CT
December
Weather in December
December, the first month of the winter in Prospect, is still a cold month, with an average temperature varying between 39.4°F (4.1°C) and 28.6°F (-1.9°C).Temperature
The average high-temperature drops in December, from November's chilly 49.1°F (9.5°C) to a wintry 39.4°F (4.1°C). Prospect's temperature in December lowers to a consistent average of 28.6°F (-1.9°C) during the nights.Humidity
The average relative humidity in December is 78%.Rainfall
The month with the most rainfall is December, when the rain falls for 11.7 days and typically aggregates up to 3.94" (100mm) of precipitation.Snowfall
January through May, November and December are months with snowfall in Prospect. In Prospect, in December, snow falls for 5.6 days, with typically accumulated 3.03" (77mm) of snow. Throughout the year, there are 32.2 snowfall days, and 17.2" (437mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:59 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:32 pm EST.
Sunshine
In Prospect, the average sunshine in December is 4.7h.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 of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Prospect, CT
- Average high temperature in December: 39.4°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28.6°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in December
Prospect, 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
Prospect, CT
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Prospect, CT
- Average humidity in December: 78%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Prospect, CT
- Average rainfall in December: 3.94"
The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in December
Prospect, CT
- Average rainfall days in December: 11.7 days
The months with the highest number of rainy days are May and July (17.9 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in December
Prospect, CT
- Average snowfall in December: 3.03"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Prospect, CT
- Average snowfall days in December: 5.6 days
The month with the highest number of snowfall days is February (9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Prospect, CT
- Average daylight in December: 9h and 12min
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 12min).
- Average sunshine in December: 4h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Prospect, CT
- Average sunshine days in December: 14.6 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in December
Prospect, 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
Prospect, CT
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Prospect, CT
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).
