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 introduces a moderate change in Manchester's weather, with average high-temperatures falling from November's chilly 46.2°F (7.9°C) to an icy 35.8°F (2.1°C). Throughout December, an average low-temperature of 26.2°F (-3.2°C) is expected.Humidity
The average relative humidity in December is 84%.Rainfall
In Manchester, New York, during December, the rain falls for 6.8 days and regularly aggregates up to 0.91" (23mm) of precipitation. In Manchester, during the entire year, the rain falls for 123.3 days and collects up to 11.54" (293mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Manchester, in December, during 12.5 snowfall days, 2.17" (55mm) of snow is typically accumulated. Throughout the year, there are 62.5 snowfall days, and 10.04" (255mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:20 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:44 pm EST.
Sunshine
In Manchester, the average sunshine in December is 2.9h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 1 during December translates into the following guidance:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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 many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Manchester have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Manchester have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Manchester, NY
- Average high temperature in December: 35.8°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in December: 26.2°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Manchester, NY
- 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 (29.92"Hg).
Average wind speed in December
Manchester, NY
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).
Average humidity in December
Manchester, NY
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Manchester, NY
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is October (1.38").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in December
Manchester, NY
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (13.9 days).
The months with the least rainy days are January and February (5.1 days).
Average snowfall in December
Manchester, NY
- Average snowfall in December: 2.17"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Manchester, NY
- Average snowfall days in December: 12.5 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Manchester, NY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 2h and 36min).
Average sunshine days in December
Manchester, NY
- Average sunshine days in December: 13.9 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is April (12 days).
Average UV index in December
Manchester, 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
Manchester, NY
- Average cloud cover in December: 70
The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in December
Manchester, NY
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Manchester, New York, USA
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