December weather forecast
Manlius, NY

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Weather in December

The first month of the winter, December, is still a cold month in Manlius, New York, with temperature in the range of an average high of 34.2°F (1.2°C) and an average low of 25.2°F (-3.8°C).

Temperature

In Manlius, entering December brings a temperature decrement, reducing from November's frosty 44.8°F (7.1°C) to an icy 34.2°F (1.2°C). Manlius navigates through December with a barely noticeable decrease in temperature at night, stabilizing at a subzero cold 25.2°F (-3.8°C).

Humidity

In December, the average relative humidity is 85%.

Rainfall

In Manlius, during December, the rain falls for 8.8 days and regularly aggregates up to 1.97" (50mm) of precipitation. Throughout the year, there are 148.8 rainfall days, and 25" (635mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. December is the month with the most snowfall. Snow falls for 13.3 days and accumulates 5.87" (149mm) of snow.

Daylight

With an average of 9h and 6min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:16 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:39 pm EST.

Sunshine

The average sunshine in December is 2.9h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A typical high UV index of 1 in December suggests the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

The average high-temperature and low-temperature during December are 34.2°F (1.2°C) and 25.2°F (-3.8°C) respectively.

What is the average humidity in December?

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

How many days does it rain in December?

In December, the rain falls for 8.8 days. Throughout December, 1.97" (50mm) of precipitation is accumulated.

What is the snowiest month?

December is the month with the most snowfall. Snow falls for 13.3 days and accumulates 5.87" (149mm) of snow.

How many days does it snow in December in Manlius?

In Manlius, in December, snow falls for 13.3 days, with typically accumulated 5.87" (149mm) 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.

What is the average length of the day in December in Manlius?

In Manlius, the average day length in December is 9h and 4min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:16 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:39 pm EST.

How long on average sun shines in December in Manlius?

In December, the average sunshine duration is 2.9h.

What are the months with the lowest UV index in Manlius?

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

How high is the UV index in December?

In Manlius, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health risk 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
Manlius, NY

Average temperature in December - Manlius, NY
  • Average high temperature in December: 34.2°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in December: 25.2°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

Average pressure in December
Manlius, NY

Average pressure in December - Manlius, NY
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in December
Manlius, NY

Average wind speed in December - Manlius, NY
  • Average wind speed in December: 9.9mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).

Average humidity in December
Manlius, NY

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

The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and May (78%).

Average rainfall in December
Manlius, NY

Average rainfall in December - Manlius, NY
  • Average rainfall in December: 1.97"

The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is January (1.42").

Average rainfall days in December
Manlius, NY

Average rainfall days in December - Manlius, NY
  • Average rainfall days in December: 8.8 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (6 days).

Average snowfall in December
Manlius, NY

Average snowfall in December - Manlius, NY
  • Average snowfall in December: 5.87"

The month with the highest snowfall is December (5.87").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Manlius, NY

Average snowfall days in December - Manlius, NY
  • Average snowfall days in December: 13.3 days

The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Manlius, 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: 2h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).

Average sunshine days in December
Manlius, NY

Average sunshine days in December - Manlius, NY
  • Average sunshine days in December: 11.4 days

The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (8.4 days).

Average UV index in December
Manlius, NY

Average UV index in December - Manlius, 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 and December (UV index 1).

Average cloud cover in December
Manlius, NY

Average cloud cover in December - Manlius, NY
  • Average cloud cover in December: 71

The months with the most cloud cover are January and February (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 34).

Average visibility in December
Manlius, NY

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

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

Manlius, New York, USA

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