December weather forecast
Genoa, NY

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Weather in December

The first month of the winter, December, is still a cold month in Genoa, New York, with an average temperature ranging between min 25.5°F (-3.6°C) and max 34.7°F (1.5°C).

Temperature

As December begins, there is a decrease in the average high-temperature, falling from a chilly 45.1°F (7.3°C) in November to an icy 34.7°F (1.5°C). The temperature lowers to an average of 25.5°F (-3.6°C) during December nights.

Humidity

The average relative humidity in December in Genoa is 85%.

Rainfall

In Genoa, during December, the rain falls for 8 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Genoa, during the entire year, the rain falls for 130.6 days and collects up to 11.46" (291mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Genoa, during December, snow falls for 11.6 days and regularly aggregates up to 1.46" (37mm) of snow. Throughout the year, there are 58.2 snowfall days, and 7.6" (193mm) 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 December, sunrise is at 7:17 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:42 pm EST.

Sunshine

The average sunshine in December is 3.2h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Genoa. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: An average maximum UV index of 1 in December leads to these recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. It's recommended to limit sun exposure when its radiation is at its peak during midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In December, the average high-temperature and low-temperature are 34.7°F (1.5°C) and 25.5°F (-3.6°C) respectively.

What is the average humidity in December?

In Genoa, the average relative humidity in December is 85%.

How much does it rain in December?

In Genoa, during December, the rain falls for 8 days and regularly aggregates up to 0.75" (19mm) of precipitation.

How many days does it snow in December in Genoa?

In Genoa, New York, during December, snow falls for 11.6 days and regularly aggregates up to 1.46" (37mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 6min of daylight.

How many hours of daylight does Genoa have in December?

In Genoa, the average day length in December is 9h and 7min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:17 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:42 pm EST.

How many hours of sunshine does Genoa have in December?

In Genoa, the average sunshine duration in December is 3.2h.

What is the month with the lowest UV index?

The months with the lowest UV index are January and December, with an average maximum UV index of 1.

What is the UV index reading in December?

In Genoa, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Genoa, NY

Average temperature in December - Genoa, NY
  • Average high temperature in December: 34.7°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (28.6°F).

  • Average low temperature in December: 25.5°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).

Average pressure in December
Genoa, NY

Average pressure in December - Genoa, 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
Genoa, NY

Average wind speed in December - Genoa, NY
  • Average wind speed in December: 9.5mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).

Average humidity in December
Genoa, NY

Average humidity in December - Genoa, NY
  • Average humidity in December: 85%

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and May (78%).

Average rainfall in December
Genoa, NY

Average rainfall in December - Genoa, NY
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is June (1.38").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in December
Genoa, NY

Average rainfall days in December - Genoa, NY
  • Average rainfall days in December: 8 days

The month with the highest number of rainy days is July (14.1 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in December
Genoa, NY

Average snowfall in December - Genoa, NY
  • Average snowfall in December: 1.46"

The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Genoa, NY

Average snowfall days in December - Genoa, NY
  • Average snowfall days in December: 11.6 days

The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Genoa, NY

Average daylight in December / Average sunshine in December - Genoa, 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 and 1min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).

Average sunshine days in December
Genoa, NY

Average sunshine days in December - Genoa, NY
  • Average sunshine days in December: 13.8 days

The month with the most sunshine days is September (17.2 days).
The month with the least sunshine days is February (11.2 days).

Average UV index in December
Genoa, NY

Average UV index in December - Genoa, 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
Genoa, NY

Average cloud cover in December - Genoa, NY
  • Average cloud cover in December: 68

The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 33).

Average visibility in December
Genoa, NY

Average visibility in December - Genoa, NY
  • Average visibility in December: 6mi

The months with the highest visibility are April, May, June, July, August, October, November and December (6mi).
The months with the lowest visibility are January, February, March and September (5mi).

Genoa, New York, USA

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