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 coincides with a reduction in the average high-temperature, falling from a wintry 42.4°F (5.8°C) in November to a freezing cold 31.3°F (-0.4°C). Port Henry's temperature drops to an average low of 20.7°F (-6.3°C) during the nights of December.Humidity
In December, the average relative humidity is 82%.Rainfall
In Port Henry, in December, during 6 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In Port Henry, during the entire year, the rain falls for 94.8 days and collects up to 7.44" (189mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Port Henry, in December, during 7.3 snowfall days, 1.1" (28mm) of snow is typically accumulated. In Port Henry, during the entire year, snow falls for 36.5 days and aggregates up to 7.64" (194mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:09 am and sunset at 4:16 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:25 pm EST.
Sunshine
The average sunshine in December is 4h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 1 during December translates into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December in Port Henry?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
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
Port Henry, NY
- Average high temperature in December: 31.3°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in December: 20.7°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).
Average pressure in December
Port Henry, 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
Port Henry, NY
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Port Henry, NY
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in December
Port Henry, NY
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is June (0.87").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in December
Port Henry, NY
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is July (10.9 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in December
Port Henry, NY
- Average snowfall in December: 1.1"
The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Port Henry, NY
- Average snowfall days in December: 7.3 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
Port Henry, NY
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Port Henry, NY
- Average sunshine days in December: 20.7 days
The month with the most sunshine days is September (22.1 days).
The month with the least sunshine days is July (17.3 days).
Average UV index in December
Port Henry, NY
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Port Henry, NY
- Average cloud cover in December: 59
The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in December
Port Henry, NY
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Port Henry, New York, USA
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