December weather forecast
Elmhurst, NY

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Weather in December

December, the first month of the winter in Elmhurst, is also an icy month, with an average temperature fluctuating between 34.2°F (1.2°C) and 42.4°F (5.8°C).

Temperature

The arrival of December corresponds with a minor reduction in the average high-temperature, down from November's fresh 51.3°F (10.7°C) to a wintry 42.4°F (5.8°C). Elmhurst's nighttime temperatures in December see a subtle dip to an average of 34.2°F (1.2°C).

Humidity

February, May and December, with an average relative humidity of 75%, are the most humid months.

Rainfall

In Elmhurst, in December, it is raining for 5.8 days, with typically 0.71" (18mm) of accumulated precipitation. In Elmhurst, during the entire year, the rain falls for 89.8 days and collects up to 6.73" (171mm) of precipitation.

Snowfall

January through March and December are months with snowfall. The months with the most snowfall are February, March and December, with an average 0.16" (4mm) of accumulated snow.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of December in Elmhurst, sunrise is at 7:00 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:38 pm EST.

Sunshine

The average sunshine in December is 5h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 2 during December translates into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.

Frequently asked questions

How cold is December?

The high-temperature during December is 42.4°F (5.8°C) and the low-temperature is 34.2°F (1.2°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in August is computed to be 86°F (30°C).

What are the most humid months?

The months with the highest humidity are February, May and December, with an average relative humidity of 75%.

What is the average humidity in December?

In Elmhurst, the average relative humidity in December is 75%.

How many days does it rain in December?

In Elmhurst, in December, during 5.8 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

When does it snow the most?

The months with the most snowfall are February, March and December, with an average 0.16" (4mm) of accumulated snow.

When does it start to snow?

December is the first month it typically snows. Throughout December, in the average 1.5 snowfall days, it receives 0.16" (4mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 18min of daylight.

How many hours of daylight does Elmhurst have in December?

The average day length in December is 9h and 19min.

When is the sunrise / sunset in December in Elmhurst?

In December, on the first day of the month, sunrise is at 7:00 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:38 pm EST.

How many hours of sunshine does Elmhurst have in December?

The average sunshine duration in December is 5h.

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

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.

What is the UV index reading in December?

In Elmhurst, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Elmhurst, NY

Average temperature in December - Elmhurst, NY
  • Average high temperature in December: 42.4°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in December: 34.2°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

Average pressure in December
Elmhurst, NY

Average pressure in December - Elmhurst, 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
Elmhurst, NY

Average wind speed in December - Elmhurst, NY
  • Average wind speed in December: 10.1mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

Average humidity in December
Elmhurst, NY

Average humidity in December - Elmhurst, NY
  • Average humidity in December: 75%

The months with the highest relative humidity are February, May and December (75%).
The month with the lowest relative humidity is August (70%).

Average rainfall in December
Elmhurst, NY

Average rainfall in December - Elmhurst, NY
  • Average rainfall in December: 0.71"

The wettest month (with the highest rainfall) is July (0.75").
The driest month (with the least rainfall) is September (0.2").

Average rainfall days in December
Elmhurst, NY

Average rainfall days in December - Elmhurst, NY
  • Average rainfall days in December: 5.8 days

The month with the highest number of rainy days is July (9.9 days).
The month with the least rainy days is January (4.8 days).

Average snowfall in December
Elmhurst, NY

Average snowfall in December - Elmhurst, NY
  • Average snowfall in December: 0.16"

The months with the highest snowfall are February, March and December (0.16").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Elmhurst, NY

Average snowfall days in December - Elmhurst, NY
  • Average snowfall days in December: 1.5 days

The months with the highest number of snowfall days are January and February (2.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Elmhurst, NY
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Elmhurst, NY

Average sunshine days in December - Elmhurst, NY
  • Average sunshine days in December: 24 days

The months with the most sunshine days are January and December (24 days).
The month with the least sunshine days is June (17.8 days).

Average UV index in December
Elmhurst, NY

Average UV index in December - Elmhurst, NY
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Elmhurst, NY

Average cloud cover in December - Elmhurst, NY
  • Average cloud cover in December: 47

The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 29).

Average visibility in December
Elmhurst, NY

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

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

Elmhurst, New York, USA

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