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 average high-temperature decreases in December, shifting from an icy 40.1°F (4.5°C) in November to a subzero cold 29.5°F (-1.4°C). Riparius reports an average nighttime low-temperature of 19.9°F (-6.7°C) in December.Humidity
The average relative humidity in December is 85%.Rainfall
In Riparius, New York, in December, during 12 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, there are 160 rainfall days, and 15.04" (382mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 17.1 days and typically aggregates up to 3.82" (97mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:09 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:28 pm EST.
Sunshine
In December, the average sunshine is 3.4h.UV index
The months with the lowest UV index are January through March and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 1 during December leads to these instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching 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 it in December?
What is the average humidity in December?
How many days does it rain in December?
What is the snowiest month?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Riparius, NY
- Average high temperature in December: 29.5°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in December: 19.9°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in December
Riparius, NY
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Riparius, NY
- Average wind speed in December: 6.7mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Riparius, NY
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is May (77%).
Average rainfall in December
Riparius, NY
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is October (1.73").
The driest months (with the least rainfall) are January and February (0.91").
Average rainfall days in December
Riparius, NY
- Average rainfall days in December: 12 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in December
Riparius, NY
- Average snowfall in December: 3.82"
The month with the highest snowfall is December (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Riparius, NY
- Average snowfall days in December: 17.1 days
The month with the highest number of snowfall days is January (20 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Riparius, 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 2min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in December
Riparius, NY
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is September (15.7 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in December
Riparius, NY
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in December
Riparius, NY
- Average cloud cover in December: 66
The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in December
Riparius, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, October, November and December (5mi).
The months with the lowest visibility are January, February, March, August and September (4mi).
Riparius, New York, USA
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