December weather forecastPittsford, NY
December
Weather in December
The first month of the winter, December, is also an icy month in Pittsford, New York, with temperature in the range of an average high of 35.8°F (2.1°C) and an average low of 27°F (-2.8°C).Temperature
The shift from November to December involves a decrease in the average high-temperature, from a frosty 46.2°F (7.9°C) to an icy 35.8°F (2.1°C). An average low-temperature of 27°F (-2.8°C) is witnessed throughout the month of December, a mere drop from the daytime peak.Humidity
The average relative humidity in December in Pittsford is 83%.Rainfall
In Pittsford, in December, during 9.6 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 161.2 rainfall days, and 27.87" (708mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Pittsford, during December, snow falls for 13 days and regularly aggregates up to 5.04" (128mm) of snow. Throughout the year, in Pittsford, New York, there are 60.8 snowfall days, and 24.53" (623mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:22 am and sunset at 4:36 pm. On the last day of December, in Pittsford, sunrise is at 7:41 am and sunset at 4:45 pm EST.
Sunshine
In December, the average sunshine 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 threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 1 in December translates into these instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Pittsford, NY
- Average high temperature in December: 35.8°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 (29.7°F).
- Average low temperature in December: 27°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in December
Pittsford, 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
Pittsford, NY
- Average wind speed in December: 10.3mph
The windiest months (with the highest average wind speed) are January and February (11.1mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in December
Pittsford, NY
- Average humidity in December: 83%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, May, July, August and September (77%).
Average rainfall in December
Pittsford, NY
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is January (1.5").
Average rainfall days in December
Pittsford, NY
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is February (7 days).
Average snowfall in December
Pittsford, NY
- Average snowfall in December: 5.04"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Pittsford, NY
- Average snowfall days in December: 13 days
The month with the highest number of snowfall days is January (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Pittsford, 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 24min).
The months with the least sunshine are January and February (Average sunshine: 2h and 36min).
Average sunshine days in December
Pittsford, NY
- Average sunshine days in December: 10.7 days
The month with the most sunshine days is November (14.5 days).
The month with the least sunshine days is February (9.4 days).
Average UV index in December
Pittsford, 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
Pittsford, NY
- Average cloud cover in December: 70
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in December
Pittsford, 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).
