Weather in December
The first month of the winter, December, is still a cold month in Greater Rochester International Airport, New York, with an average temperature ranging between min 21.2°F (-6°C) and max 35.6°F (2°C).
Note: Caution: 41°F (5°C) temperatures below 50°F (10°C) during swimming can result in intense cold shock and quickened breathing.
On the first day of December, sunrise is at 7:23 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:45 pm EST.
Note: An average UV index of 1 in December transforms into this advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
[Resources]Temperature
December weather is marked by a drop in the average high-temperature, falling from a frosty 48.2°F (9°C) in November to a wintry 35.6°F (2°C). Throughout December, Greater Rochester International Airport records an average temperature of 21.2°F (-6°C) at night.Rainfall
In December, the rain falls for 17 days. Throughout December, 2.52" (64mm) of precipitation is accumulated. In Greater Rochester International Airport, New York, during the entire year, the rain falls for 152 days and collects up to 31.89" (810mm) of precipitation.Ocean temperature
In Greater Rochester International Airport, in December, the average water temperature is 41°F (5°C).Note: Caution: 41°F (5°C) temperatures below 50°F (10°C) during swimming can result in intense cold shock and quickened breathing.
Daylight
The month with the shortest days in Greater Rochester International Airport, New York, is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:23 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:45 pm EST.
Sunshine
The months with the least sunshine in Greater Rochester International Airport are January, November and December, with an average of 3h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: An average UV index of 1 in December transforms into this advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
How cold is December in Greater Rochester International Airport?
Greater Rochester International Airport in December has an average high-temperature of 35.6°F (2°C) and an average low-temperature of 21.2°F (-6°C).
How many days does it rain in December in Greater Rochester International Airport?
In December, in Greater Rochester International Airport, New York, the rain falls for 17 days. Throughout December, 2.52" (64mm) of precipitation is accumulated.
What is the ocean temperature in December in Greater Rochester International Airport?
In December, the average ocean temperature in Greater Rochester International Airport is 41°F (5°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.
What is the month with the shortest days in Greater Rochester International Airport?
December has the shortest days of the year in Greater Rochester International Airport, with an average of 9h and 6min of daylight.
What is the average length of the day in December in Greater Rochester International Airport?
The average day length in December in Greater Rochester International Airport is 9h and 4min.
When are sunrise and sunset in December in Greater Rochester International Airport?
In December, on the first day of the month, sunrise is at 7:23 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:45 pm EST.
What is the month with the least sunshine in Greater Rochester International Airport?
The months with the least sunshine in Greater Rochester International Airport are January, November and December, with an average of 3h of sunshine.
How many hours of sunshine does Greater Rochester International Airport have in December?
The average sunshine duration in December in Greater Rochester International Airport is 3h.
What are the months with the lowest UV index in Greater Rochester International Airport?
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Greater Rochester International Airport, New York.
How high is the UV index in December in Greater Rochester International Airport?
The average daily maximum UV index in December in Greater Rochester International Airport is 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.
Average temperature in December
Greater Rochester International Airport, NY
- Average high temperature in December: 36°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 21°F
The months with the highest average low temperature are July and August (59°F).
The coldest months (with the lowest average low temperature) are January and February (16°F).
Average rainfall in December
Greater Rochester International Airport, NY
- Average rainfall in December: 2.5"
The wettest month (with the highest rainfall) is August (3.3").
The driest months (with the least rainfall) are January and February (2").
Average rainfall days in December
Greater Rochester International Airport, NY
- Average rainfall days in December: 17 days
The month with the highest number of rainy days is December (17 days).
The month with the least rainy days is July (9 days).
Average sea temperature in December
Greater Rochester International Airport, NY
- Average sea temperature in December: 41°F
The best month for swimming (with the highest average sea temperature) is August (70°F).
The coldest months (with the lowest average sea temperature) are February and March (36°F).
Average daylight in December /
Average sunshine in December
Greater Rochester International Airport, NY
- Average daylight in December: 9h and 1min
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: 3h
The months with the most sunshine are June and July (Average sunshine: 10h).
The months with the least sunshine are January, November and December (Average sunshine: 3h).
Average UV index in December
Greater Rochester International Airport, NY
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are January and December (UV index 1).
Greater Rochester International Airport, New York, USA
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