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
December weather is marked by a drop in the average high-temperature, falling from a frosty 42.8°F (6°C) in November to a cold 32.2°F (0.1°C). Throughout the nights in December, Watertown notes an average low of 23.2°F (-4.9°C), a small dip from the daytime peak.Humidity
In Watertown, the average relative humidity in December is 85%.Rainfall
In Watertown, New York, in December, it is raining for 10.7 days, with typically 3.27" (83mm) of accumulated precipitation. Throughout the year, in Watertown, New York, there are 163.9 rainfall days, and 33.19" (843mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Watertown, in December, during 15.9 snowfall days, 9.96" (253mm) of snow is typically accumulated. Throughout the year, there are 84.4 snowfall days, and 43.58" (1107mm) of snow is accumulated.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of December in Watertown, sunrise is at 7:18 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 4:35 pm EST.
Sunshine
The average sunshine in December in Watertown is 3h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Watertown. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 1 suggests these recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Watertown?
What is the average humidity in December in Watertown?
How many days does it rain in December in Watertown?
How much does it snow in Watertown in December?
What is the month with the shortest days in Watertown?
How many hours of daylight does Watertown have in December?
When are sunrise and sunset in December in Watertown?
How long on average sun shines in December in Watertown?
What is the month with the lowest UV index in Watertown?
What is the UV index intensity in December in Watertown?
Average temperature in December
Watertown, NY
- Average high temperature in December: 32.2°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in December: 23.2°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in December
Watertown, 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
Watertown, NY
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in December
Watertown, NY
- Average humidity in December: 85%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and September (77%).
Average rainfall in December
Watertown, NY
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is October (3.54").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Watertown, NY
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is October (17.7 days).
The month with the least rainy days is February (7 days).
Average snowfall in December
Watertown, NY
- Average snowfall in December: 9.96"
The month with the highest snowfall is January (10.47").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Watertown, NY
- Average snowfall days in December: 15.9 days
The month with the highest number of snowfall days is January (19.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Watertown, 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: 3h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 2h and 42min).
Average sunshine days in December
Watertown, NY
- Average sunshine days in December: 7.9 days
The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is February (6.7 days).
Average UV index in December
Watertown, 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
Watertown, 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 31).
Average visibility in December
Watertown, 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).
Watertown, New York, USA
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