December weather forecast
Ithaca, NY

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A stream of water flowing downstream from the Taughannock Waterfall in Ithaka, New York
A stream of water flowing downstream from the Taughannock Waterfall in Ithaka, New York

Weather in December

December welcomes the winter season in Ithaca, with cold temperatures and frequent snow showers. The weather is typified by the shortest daylight hours at 9.1, with the city delicately wrapped in holiday lights. Despite the lower visibility, the snowy landscape of Ithaca bears an enchanting charm, concluding the year on a wintry note.

Temperature

Ithaca's progression into December includes a drop in the average high-temperature, from a frosty 44.1°F (6.7°C) in November to a cold 33.6°F (0.9°C). In December, the average low-temperature is a subzero cold 24.1°F (-4.4°C).

Humidity

In December, the average relative humidity is 86%.

Rainfall

In Ithaca, in December, it is raining for 9.3 days, with typically 2.36" (60mm) of accumulated precipitation. In Ithaca, New York, during the entire year, the rain falls for 164.2 days and collects up to 32.56" (827mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Ithaca, in December, during 16 snowfall days, 6.77" (172mm) of snow is typically accumulated. In Ithaca, during the entire year, snow falls for 82.1 days and aggregates up to 34.57" (878mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 7:16 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:43 pm EST.

Sunshine

The average sunshine in December is 2.9h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 1 in December translates into these instructions:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.

Frequently asked questions

How cold is it in December?

In Ithaca, in December, the average high-temperature is 33.6°F (0.9°C), and the average low-temperature is 24.1°F (-4.4°C).

What is the average humidity in December?

In December, the average relative humidity is 86%.

How much does it rain in Ithaca in December?

In Ithaca, in December, during 9.3 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

How many days does it snow in December?

In December, it is snowing for 16 days. Throughout December, 6.77" (172mm) of snow is accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 6min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 8min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:16 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:43 pm EST.

How many hours of sunshine does Ithaca have in December?

The average sunshine duration in December is 2.9h.

When is the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
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
Ithaca, NY

Average temperature in December - Ithaca, NY
  • Average high temperature in December: 33.6°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in December: 24.1°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

Average pressure in December
Ithaca, NY

Average pressure in December - Ithaca, 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
Ithaca, NY

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

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

Average humidity in December
Ithaca, NY

Average humidity in December - Ithaca, NY
  • Average humidity in December: 86%

The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April and May (79%).

Average rainfall in December
Ithaca, NY

Average rainfall in December - Ithaca, NY
  • Average rainfall in December: 2.36"

The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is November (1.97").

Average rainfall days in December
Ithaca, NY

Average rainfall days in December - Ithaca, NY
  • Average rainfall days in December: 9.3 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (6.4 days).

Average snowfall in December
Ithaca, NY

Average snowfall in December - Ithaca, NY
  • Average snowfall in December: 6.77"

The month with the highest snowfall is February (8.35").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Ithaca, NY

Average snowfall days in December - Ithaca, NY
  • Average snowfall days in December: 16 days

The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Ithaca, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).

Average sunshine days in December
Ithaca, NY

Average sunshine days in December - Ithaca, NY
  • Average sunshine days in December: 8.5 days

The month with the most sunshine days is September (14.2 days).
The month with the least sunshine days is February (6.8 days).

Average UV index in December
Ithaca, NY

Average UV index in December - Ithaca, 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
Ithaca, NY

Average cloud cover in December - Ithaca, NY
  • Average cloud cover in December: 72

The month with the most cloud cover is February (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 38).

Average visibility in December
Ithaca, NY

Average visibility in December - Ithaca, NY
  • Average visibility in December: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).

Ithaca, New York, USA

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