December weather forecast
Peterson, IA

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Weather in December

December, the first month of the winter in Peterson, is also a subzero cold month, with an average temperature ranging between max 29.1°F (-1.6°C) and min 19°F (-7.2°C).

Temperature

Peterson, Iowa, experiences a noticeable temperature shift with the start of December, with average high-temperatures moving from a frosty 44.1°F (6.7°C) in November to a freezing cold 29.1°F (-1.6°C). During the month of December, the temperature falls to an average of 19°F (-7.2°C).

Humidity

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

Rainfall

In Peterson, in December, it is raining for 4.2 days, with typically 0.94" (24mm) of accumulated precipitation. In Peterson, Iowa, during the entire year, the rain falls for 117 days and collects up to 19.84" (504mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In December, in Peterson, it is snowing for 8 days. Throughout December, 1.77" (45mm) of snow is accumulated. In Peterson, during the entire year, snow falls for 36.4 days and aggregates up to 10.67" (271mm) of snow.

Daylight

December has the shortest days of the year in Peterson, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 7:33 am and sunset at 4:48 pm. On the last day of December, in Peterson, Iowa, sunrise is at 7:52 am and sunset at 4:57 pm CST.

Sunshine

The average sunshine in December is 4.7h.

UV index

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Frequently asked questions

How cold is December in Peterson?

In Peterson, in December, the average high-temperature is 29.1°F (-1.6°C), and the average low-temperature is 19°F (-7.2°C). In July, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in December in Peterson?

The average relative humidity in December in Peterson is 82%.

How many days does it rain in December in Peterson?

In Peterson, during December, the rain falls for 4.2 days and regularly aggregates up to 0.94" (24mm) of precipitation.

How many days does it snow in December in Peterson?

In Peterson, Iowa, during December, snow falls for 8 days and regularly aggregates up to 1.77" (45mm) of snow.

What is the month with the shortest days in Peterson?

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

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

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

When is the sunrise / sunset in December in Peterson?

On the first day of December, sunrise is at 7:33 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 4:57 pm CST.

How many hours of sunshine does Peterson have in December?

In December, the average sunshine duration in Peterson, Iowa, is 4.7h.

What is the UV index intensity in December in Peterson?

The average daily maximum UV index in December in Peterson is 2. A UV Index of 2, and less, symbolizes 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
Peterson, IA

Average temperature in December - Peterson, IA
  • Average high temperature in December: 29.1°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (24.4°F).

  • Average low temperature in December: 19°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12°F).

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Average pressure in December
Peterson, IA

Average pressure in December - Peterson, IA
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in December
Peterson, IA

Average wind speed in December - Peterson, IA
  • Average wind speed in December: 10.4mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

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Average humidity in December
Peterson, IA

Average humidity in December - Peterson, IA
  • Average humidity in December: 82%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (68%).

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Average rainfall in December
Peterson, IA

Average rainfall in December - Peterson, IA
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is June (3.15").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in December
Peterson, IA

Average rainfall days in December - Peterson, IA
  • Average rainfall days in December: 4.2 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.6 days).

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Average snowfall in December
Peterson, IA

Average snowfall in December - Peterson, IA
  • Average snowfall in December: 1.77"

The month with the highest snowfall is February (3.19").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Peterson, IA

Average snowfall days in December - Peterson, IA
  • Average snowfall days in December: 8 days

The month with the highest number of snowfall days is January (9.1 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
Peterson, IA

Average daylight in December / Average sunshine in December - Peterson, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in December
Peterson, IA

Average sunshine days in December - Peterson, IA
  • Average sunshine days in December: 20.4 days

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (11.1 days).

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Average UV index in December
Peterson, IA

Average UV index in December - Peterson, IA
  • Average UV index in December: 2

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

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Average cloud cover in December
Peterson, IA

Average cloud cover in December - Peterson, IA
  • Average cloud cover in December: 52

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in December
Peterson, IA

Average visibility in December - Peterson, IA
  • 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).

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Peterson, Iowa, USA

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