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 onset of December results in a decrease in the average high-temperature, receding from a chilly 42.8°F (6°C) in November to a subzero cold 31.6°F (-0.2°C). An average nighttime temperature of 22.5°F (-5.3°C) is recorded during December.Humidity
In Plessis, the average relative humidity in December is 85%.Rainfall
In Plessis, during December, the rain falls for 11.6 days and regularly aggregates up to 2.87" (73mm) of precipitation. In Plessis, during the entire year, the rain falls for 166.4 days and collects up to 30.55" (776mm) of precipitation.Snowfall
Months with snowfall in Plessis are January through May, October through December. The month with the most snowfall is December, when snow falls for 17.4 days and typically aggregates up to 9.13" (232mm) of snow.Daylight
With an average of 8h and 54min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:19 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 4:34 pm EST.
Sunshine
In December, the average sunshine is 3.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 1 in December leads to these guidelines:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
When does it snow the most?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Plessis have in December?
What time are sunrise and sunset in December in Plessis?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Plessis, NY
- Average high temperature in December: 31.6°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in December: 22.5°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in December
Plessis, NY
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Plessis, NY
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in December
Plessis, NY
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Plessis, NY
- Average rainfall in December: 2.87"
The wettest month (with the highest rainfall) is October (3.39").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in December
Plessis, NY
- Average rainfall days in December: 11.6 days
The month with the highest number of rainy days is October (17.4 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in December
Plessis, NY
- Average snowfall in December: 9.13"
The month with the highest snowfall is December (9.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Plessis, NY
- Average snowfall days in December: 17.4 days
The month with the highest number of snowfall days is January (20.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Plessis, NY
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 3h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 2h and 54min).
Average sunshine days in December
Plessis, NY
- Average sunshine days in December: 7.6 days
The month with the most sunshine days is September (14.8 days).
The month with the least sunshine days is February (6.9 days).
Average UV index in December
Plessis, NY
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Plessis, NY
- Average cloud cover in December: 68
The months with the most cloud cover are January and February (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Plessis, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Plessis, New York, USA
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