December weather forecastLewiston, NY
December
Weather in December
December, the first month of the winter in Lewiston, is also a wintry month, with an average temperature fluctuating between 28.8°F (-1.8°C) and 36.3°F (2.4°C).Temperature
Lewiston in December experiences a subtle temperature decline, with average high-temperatures reducing from a chilly 45.9°F (7.7°C) in November to a wintry 36.3°F (2.4°C). December nights experience a minor temperature downturn to a subzero cold 28.8°F (-1.8°C).Humidity
In Lewiston, New York, the average relative humidity in December is 81%.Rainfall
In Lewiston, in December, it is raining for 11.1 days, with typically 2.24" (57mm) of accumulated precipitation. In Lewiston, New York, during the entire year, the rain falls for 169.3 days and collects up to 30.31" (770mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Lewiston. In Lewiston, in December, during 13.5 snowfall days, 3.7" (94mm) of snow is typically accumulated. Throughout the year, in Lewiston, there are 65.6 snowfall days, and 22.6" (574mm) of snow is accumulated.Daylight
December has the shortest days of the year in Lewiston, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:28 am and sunset at 4:42 pm. On the last day of December, in Lewiston, New York, sunrise is at 7:47 am and sunset at 4:51 pm EST.
Sunshine
The average sunshine in December in Lewiston 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 estimate of 2, and below, represents a low health risk 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:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lewiston, NY
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in December: 28.8°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in December
Lewiston, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Lewiston, NY
- Average wind speed in December: 11.5mph
The windiest month (with the highest average wind speed) is January (12.3mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in December
Lewiston, NY
- Average humidity in December: 81%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall in December
Lewiston, NY
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is July (3.11").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Lewiston, NY
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in December
Lewiston, NY
- Average snowfall in December: 3.7"
The month with the highest snowfall is February (7.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lewiston, NY
- Average snowfall days in December: 13.5 days
The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lewiston, NY
- Average daylight in December: 9h and 6min
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 54min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Lewiston, NY
- Average sunshine days in December: 9.1 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is January (6.8 days).
Average UV index in December
Lewiston, NY
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Lewiston, NY
- Average cloud cover in December: 69
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Lewiston, NY
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
