December weather forecast
New Hartford, IA

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Weather in December

The first month of the winter, December, is also a subzero cold month in New Hartford, Iowa, with an average temperature ranging between min 19.9°F (-6.7°C) and max 30.6°F (-0.8°C).

Temperature

The transition into December involves a decrease in the average high-temperature, falling from a chilly 43.9°F (6.6°C) in November to a freezing cold 30.6°F (-0.8°C). New Hartford records an average nighttime low-temperature of 19.9°F (-6.7°C) throughout December.

Humidity

In December, the average relative humidity is 83%.

Rainfall

In New Hartford, in December, it is raining for 6.4 days, with typically 1.65" (42mm) of accumulated precipitation. Throughout the year, there are 148.3 rainfall days, and 31.02" (788mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In New Hartford, in December, during 12.5 snowfall days, 4.13" (105mm) of snow is typically accumulated. In New Hartford, during the entire year, snow falls for 53.2 days and aggregates up to 22.4" (569mm) 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 7:21 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:47 pm CST.

Sunshine

In New Hartford, the average sunshine in December is 4.3h.

UV index

In New Hartford, the average daily maximum UV index in December is 2. 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: The maximum UV index of 2 during December translates into these guidelines:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. To avoid the Sun's strongest rays, limit exposure around the mid-day period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In New Hartford, 30.6°F (-0.8°C) is the average high-temperature and 19.9°F (-6.7°C) is the average low-temperature during December.

What is the average humidity in December in New Hartford?

The average relative humidity in December is 83%.

How many days does it rain in December?

In New Hartford, in December, it is raining for 6.4 days, with typically 1.65" (42mm) of accumulated precipitation.

How many days does it snow in December?

In New Hartford, during December, snow falls for 12.5 days and regularly aggregates up to 4.13" (105mm) of snow.

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.

How many hours of daylight does New Hartford have in December?

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

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:21 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:47 pm CST.

How many hours of sunshine does New Hartford have in December?

In New Hartford, the average sunshine duration in December is 4.3h.

What is the UV index intensity in December?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents 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
New Hartford, IA

Average temperature in December - New Hartford, IA
  • Average high temperature in December: 30.6°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (24.1°F).

  • Average low temperature in December: 19.9°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (11.8°F).

Average pressure in December
New Hartford, IA

Average pressure in December - New Hartford, IA
  • Average pressure in December: 30.11"Hg

The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in December
New Hartford, IA

Average wind speed in December - New Hartford, IA
  • Average wind speed in December: 10.3mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

Average humidity in December
New Hartford, IA

Average humidity in December - New Hartford, IA
  • Average humidity in December: 83%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (71%).

Average rainfall in December
New Hartford, IA

Average rainfall in December - New Hartford, IA
  • Average rainfall in December: 1.65"

The wettest month (with the highest rainfall) is June (4.76").
The driest month (with the least rainfall) is January (1.14").

Average rainfall days in December
New Hartford, IA

Average rainfall days in December - New Hartford, IA
  • Average rainfall days in December: 6.4 days

The month with the highest number of rainy days is June (20.1 days).
The month with the least rainy days is February (4.9 days).

Average snowfall in December
New Hartford, IA

Average snowfall in December - New Hartford, IA
  • Average snowfall in December: 4.13"

The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
New Hartford, IA

Average snowfall days in December - New Hartford, IA
  • Average snowfall days in December: 12.5 days

The month with the highest number of snowfall days is January (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
New Hartford, IA

Average daylight in December / Average sunshine in December - New Hartford, IA
  • 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: 4h and 2min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in December
New Hartford, IA

Average sunshine days in December - New Hartford, IA
  • Average sunshine days in December: 15.8 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (7.8 days).

Average UV index in December
New Hartford, IA

Average UV index in December - New Hartford, IA
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in December
New Hartford, IA

Average cloud cover in December - New Hartford, IA
  • Average cloud cover in December: 56

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 31).

Average visibility in December
New Hartford, IA

Average visibility in December - New Hartford, IA
  • Average visibility in December: 6mi

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

New Hartford, Iowa, USA

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