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
Onset of December comes with a temperature decline, the average high falling from a frosty 42.8°F (6°C) in November to a wintry 33.1°F (0.6°C). Nighttime temperature in Rockwells Mills experiences an average drop to a subzero cold 23.2°F (-4.9°C) in December.Humidity
In Rockwells Mills, the average relative humidity in December is 87%.Rainfall
In Rockwells Mills, during December, the rain falls for 9.4 days and regularly aggregates up to 1.73" (44mm) of precipitation. Throughout the year, there are 144.3 rainfall days, and 23.07" (586mm) of precipitation is accumulated.Snowfall
Months with snowfall in Rockwells Mills are January through May, October through December. In Rockwells Mills, in December, snow falls for 13.1 days, with typically accumulated 5.75" (146mm) of snow. In Rockwells Mills, during the entire year, snow falls for 70.5 days and aggregates up to 26.26" (667mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:12 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:38 pm EST.
Sunshine
In Rockwells Mills, the average sunshine in December is 2.6h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the average maximum UV index of 1 translates into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Rockwells Mills in December?
What is the average humidity in December in Rockwells Mills?
How many days does it rain in December in Rockwells Mills?
How many days does it snow in December in Rockwells Mills?
What is the month with the shortest days in Rockwells Mills?
How many hours of daylight does Rockwells Mills have in December?
When is the sunrise / sunset in December in Rockwells Mills?
How long on average sun shines in December in Rockwells Mills?
What is the month with the lowest UV index in Rockwells Mills?
How high is the UV index in December in Rockwells Mills?
Average temperature in December
Rockwells Mills, NY
- Average high temperature in December: 33.1°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 (27°F).
- Average low temperature in December: 23.2°F
The month with the highest average low temperature is July (56.7°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in December
Rockwells Mills, NY
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Rockwells Mills, NY
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Rockwells Mills, NY
- Average humidity in December: 87%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April, May and July (80%).
Average rainfall in December
Rockwells Mills, NY
- Average rainfall in December: 1.73"
The wettest months (with the highest rainfall) are May and June (2.44").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in December
Rockwells Mills, NY
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in December
Rockwells Mills, NY
- Average snowfall in December: 5.75"
The month with the highest snowfall is February (6.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rockwells Mills, NY
- Average snowfall days in December: 13.1 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rockwells Mills, NY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 2h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).
Average sunshine days in December
Rockwells Mills, NY
- Average sunshine days in December: 11.2 days
The month with the most sunshine days is September (15.7 days).
The month with the least sunshine days is February (8.7 days).
Average UV index in December
Rockwells Mills, NY
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Rockwells Mills, NY
- Average cloud cover in December: 73
The month with the most cloud cover is February (Cloud cover 76).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in December
Rockwells Mills, NY
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Rockwells Mills, New York, USA
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