December weather forecast
Guttenberg, IA

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Weather in December

December brings the onset of winter in Guttenberg. It’s noticeably colder than November, with temperatures dipping considerably. Snowfall increases substantially to its yearly height of 3.94" (100mm). The duration of daylight decreases to 9.1 hours and the humidity scales up to 83%. Despite the chilly temperatures, the wind speed moderates at 9.5mph (15.3km/h), making the weather feel colder than it actually is.

Temperature

In December, the average high-temperature decreases from a chilly 43.5°F (6.4°C) in November to a freezing cold 30.4°F (-0.9°C). December nights are marked by an average temperature drop to 20.3°F (-6.5°C).

Humidity

In Guttenberg, the average relative humidity in December is 83%.

Rainfall

In Guttenberg, in December, during 6 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. In Guttenberg, during the entire year, the rain falls for 138.5 days and collects up to 28.46" (723mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Guttenberg, in December, snow falls for 10.6 days, with typically accumulated 3.94" (100mm) of snow. In Guttenberg, Iowa, during the entire year, snow falls for 48.6 days and aggregates up to 19.57" (497mm) of snow.

Daylight

With an average of 9h and 6min of daylight, December has the shortest days of the year in Guttenberg.
On the first day of December in Guttenberg, sunrise is at 7:15 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:40 pm CST.

Sunshine

In Guttenberg, the average sunshine in December is 4h.

UV index

January, November 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 low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 1 suggests these recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

How cold is December in Guttenberg?

In December, the average high-temperature and low-temperature in Guttenberg are 30.4°F (-0.9°C) and 20.3°F (-6.5°C) respectively.

What is the average humidity in December in Guttenberg?

The average relative humidity in December in Guttenberg, Iowa, is 83%.

How many days does it rain in December in Guttenberg?

In Guttenberg, during December, the rain falls for 6 days and regularly aggregates up to 1.42" (36mm) of precipitation.

How many days does it snow in December in Guttenberg?

In Guttenberg, Iowa, during December, snow falls for 10.6 days and regularly aggregates up to 3.94" (100mm) of snow.

What is the month with the shortest days in Guttenberg?

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

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

In Guttenberg, the average day length in December is 9h and 5min.

What time are sunrise and sunset in December in Guttenberg?

On the first day of December in Guttenberg, Iowa, sunrise is at 7:15 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:40 pm CST.

How long on average sun shines in December in Guttenberg?

In December, the average sunshine duration is 4h.

When is the lowest UV index in Guttenberg?

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

What is the UV index reading in December in Guttenberg?

In December, the average daily maximum UV index in Guttenberg is 1. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to 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
Guttenberg, IA

Average temperature in December - Guttenberg, IA
  • Average high temperature in December: 30.4°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 (23.7°F).

  • Average low temperature in December: 20.3°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).

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Average pressure in December
Guttenberg, IA

Average pressure in December - Guttenberg, 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).

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Average wind speed in December
Guttenberg, IA

Average wind speed in December - Guttenberg, IA
  • Average wind speed in December: 9.5mph

The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in December
Guttenberg, IA

Average humidity in December - Guttenberg, IA
  • Average humidity in December: 83%

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in December
Guttenberg, IA

Average rainfall in December - Guttenberg, IA
  • Average rainfall in December: 1.42"

The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is January (1.18").

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Average rainfall days in December
Guttenberg, IA

Average rainfall days in December - Guttenberg, IA
  • Average rainfall days in December: 6 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (4.4 days).

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Average snowfall in December
Guttenberg, IA

Average snowfall in December - Guttenberg, IA
  • Average snowfall in December: 3.94"

The month with the highest snowfall is January (5.2").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Guttenberg, IA

Average snowfall days in December - Guttenberg, IA
  • Average snowfall days in December: 10.6 days

The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Guttenberg, IA

Average daylight in December / Average sunshine in December - Guttenberg, 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 0min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in December
Guttenberg, IA

Average sunshine days in December - Guttenberg, IA
  • Average sunshine days in December: 16.7 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in December
Guttenberg, IA

Average UV index in December - Guttenberg, IA
  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in December
Guttenberg, IA

Average cloud cover in December - Guttenberg, IA
  • Average cloud cover in December: 59

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in December
Guttenberg, IA

Average visibility in December - Guttenberg, 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).

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Guttenberg, Iowa, USA

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