December weather forecast
Center Junction, IA

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Weather in December

December, the first month of the winter in Center Junction, is also an icy month, with an average temperature fluctuating between 22.1°F (-5.5°C) and 32.4°F (0.2°C).

Temperature

As November transitions into December, Center Junction sees a drop in the average high-temperature, transitioning from a chilly 44.8°F (7.1°C) to a cold 32.4°F (0.2°C). An average minimum temperature of 22.1°F (-5.5°C) is recorded during the month of December.

Humidity

In Center Junction, the average relative humidity in December is 82%.

Rainfall

In Center Junction, in December, it is raining for 6.5 days, with typically 1.3" (33mm) of accumulated precipitation. In Center Junction, during the entire year, the rain falls for 137.5 days and collects up to 27.68" (703mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Center Junction, Iowa, in December, during 8.7 snowfall days, 2.24" (57mm) of snow is typically accumulated. Throughout the year, in Center Junction, there are 38.8 snowfall days, and 15.16" (385mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:13 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:42 pm CST.

Sunshine

The average sunshine in December is 4.2h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.
Note: During December, 1 as the daily maximum UV index converts into the following advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Around midday, solar radiation is most harmful; hence, exposure should be limited. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.

Frequently asked questions

How cold is it in December?

In Center Junction, 32.4°F (0.2°C) is the average high-temperature and 22.1°F (-5.5°C) is the average low-temperature during December.

What is the average humidity in December?

In Center Junction, the average relative humidity in December is 82%.

How many days does it rain in December?

In December, the rain falls for 6.5 days. Throughout December, 1.3" (33mm) of precipitation is accumulated.

How many days does it snow in December?

In Center Junction, Iowa, in December, snow falls for 8.7 days, with typically accumulated 2.24" (57mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 12min of daylight.

What is the average length of the day in December?

The average day length in December is 9h and 10min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:13 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:42 pm CST.

How long on average sun shines in December in Center Junction?

The average sunshine duration in December is 4.2h.

What is the month with the lowest UV index?

The month with the lowest UV index is December, with an average maximum UV index of 1.

What is the UV index intensity in December?

The average daily maximum UV index in December is 1. 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
Center Junction, IA

Average temperature in December - Center Junction, IA
  • Average high temperature in December: 32.4°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.5°F).

  • Average low temperature in December: 22.1°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).

Average pressure in December
Center Junction, IA

Average pressure in December - Center Junction, IA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in December
Center Junction, IA

Average wind speed in December - Center Junction, IA
  • Average wind speed in December: 10mph

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 (7mph).

Average humidity in December
Center Junction, IA

Average humidity in December - Center Junction, IA
  • Average humidity in December: 82%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).

Average rainfall in December
Center Junction, IA

Average rainfall in December - Center Junction, IA
  • Average rainfall in December: 1.3"

The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is February (1.02").

Average rainfall days in December
Center Junction, IA

Average rainfall days in December - Center Junction, IA
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (4.1 days).

Average snowfall in December
Center Junction, IA

Average snowfall in December - Center Junction, IA
  • Average snowfall in December: 2.24"

The month with the highest snowfall is January (5.16").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Center Junction, IA

Average snowfall days in December - Center Junction, IA
  • Average snowfall days in December: 8.7 days

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Center Junction, IA

Average daylight in December / Average sunshine in December - Center Junction, IA
  • 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 12min).

  • Average sunshine in December: 4h and 1min

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

Average sunshine days in December
Center Junction, IA

Average sunshine days in December - Center Junction, IA
  • Average sunshine days in December: 18.2 days

The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in December
Center Junction, IA

Average UV index in December - Center Junction, IA
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Center Junction, IA

Average cloud cover in December - Center Junction, IA
  • Average cloud cover in December: 56

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in December
Center Junction, IA

Average visibility in December - Center Junction, IA
  • Average visibility in December: 6mi

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

Center Junction, Iowa, USA

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