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 sea temperature 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
With the onset of December, West Seneca's average high-temperature adjusts, receding from November's frosty 45.5°F (7.5°C) to a cold 35.2°F (1.8°C). In December, West Seneca's nights cool slightly to a consistent average temperature of 26.6°F (-3°C).Humidity
The average relative humidity in December is 84%.Rainfall
In West Seneca, in December, during 10.6 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, there are 174.7 rainfall days, and 28.7" (729mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 16.1 days. Throughout December, 5.75" (146mm) of snow is accumulated. In West Seneca, during the entire year, snow falls for 81.7 days and aggregates up to 31.73" (806mm) of snow.Ocean temperature
In West Seneca, New York, in December, the average water temperature is 41.5°F (5.3°C).Note: Swimming at temperatures less than 50°F (10°C) in 41.5°F (5.3°C) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 55.4°F (13°C) without adequate warmth can be discomforting.
Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:26 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 4:51 pm EST.
Sunshine
The average sunshine in December is 2.8h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: In December, the maximum UV index of 1 suggests this advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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?
How much does it snow in December?
How cold is the water in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does West Seneca have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
West Seneca, NY
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in December: 26.6°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
West Seneca, 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 (29.93"Hg).
Average wind speed in December
West Seneca, NY
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is January (11.3mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in December
West Seneca, NY
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are August and September (77%).
Average rainfall in December
West Seneca, NY
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in December
West Seneca, NY
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is October (18.4 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in December
West Seneca, NY
- Average snowfall in December: 5.75"
The month with the highest snowfall is February (7.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
West Seneca, NY
- Average snowfall days in December: 16.1 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
West Seneca, NY
- Average sea temperature in December: 41.5°F
The best month for swimming (with the highest average sea temperature) is August (74.2°F).
The coldest month (with the lowest average sea temperature) is February (34.9°F).
Average daylight in December /
Average sunshine in December
West Seneca, 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 months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in December
West Seneca, NY
- Average sunshine days in December: 7.4 days
The month with the most sunshine days is September (12.2 days).
The month with the least sunshine days is February (5.7 days).
Average UV index in December
West Seneca, 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, February and December (UV index 1).
Average cloud cover in December
West Seneca, NY
- Average cloud cover in December: 71
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
West Seneca, 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).
West Seneca, New York, USA
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