December weather forecast
Oelwein, IA

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Weather in December

December, the first month of the winter in Oelwein, is still a freezing cold month, with an average temperature fluctuating between 20.1°F (-6.6°C) and 30.4°F (-0.9°C).

Temperature

December suggests a modest reduction in the average high-temperature, shifting from a frosty 43.5°F (6.4°C) in November to a subzero cold 30.4°F (-0.9°C). In the month of December, the temperature in Oelwein generally rests at an average low of 20.1°F (-6.6°C).

Humidity

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

Rainfall

In Oelwein, in December, during 5.5 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. Throughout the year, there are 135.7 rainfall days, and 29.65" (753mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Oelwein, Iowa, in December, during 8.7 snowfall days, 2.76" (70mm) of snow is typically accumulated. In Oelwein, during the entire year, snow falls for 42.1 days and aggregates up to 18.39" (467mm) of snow.

Daylight

The month with the shortest days in Oelwein is December, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 7:18 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 4:44 pm CST.

Sunshine

The average sunshine in December is 4.1h.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 1 during December translates into the following guidance:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is December in Oelwein?

December temperatures in Oelwein vary between a high-temperature of 30.4°F (-0.9°C) and a low-temperature of 20.1°F (-6.6°C).

What is the average humidity in December in Oelwein?

In December, the average relative humidity is 83%.

How much does it rain in Oelwein in December?

In December, in Oelwein, the rain falls for 5.5 days. Throughout December, 1.26" (32mm) of precipitation is accumulated.

How much does it snow in Oelwein in December?

In Oelwein, during December, snow falls for 8.7 days and regularly aggregates up to 2.76" (70mm) of snow.

What is the month with the shortest days in Oelwein?

With an average of 9h and 6min of daylight, December has the shortest days of the year in Oelwein, Iowa.

How many hours of daylight does Oelwein have in December?

The average day length in December in Oelwein, Iowa, is 9h and 7min.

When are sunrise and sunset in December in Oelwein?

On the first day of December in Oelwein, sunrise is at 7:18 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 4:44 pm CST.

How many hours of sunshine does Oelwein have in December?

The average sunshine duration in December in Oelwein, Iowa, is 4.1h.

What is the month with the lowest UV index in Oelwein?

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

What is the UV index intensity in December in Oelwein?

In Oelwein, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe 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
Oelwein, IA

Average temperature in December - Oelwein, IA
  • Average high temperature in December: 30.4°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (23.7°F).

  • Average low temperature in December: 20.1°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).

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Average pressure in December
Oelwein, IA

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

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

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Average wind speed in December
Oelwein, IA

Average wind speed in December - Oelwein, IA
  • Average wind speed in December: 10.1mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

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Average humidity in December
Oelwein, IA

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

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in December
Oelwein, IA

Average rainfall in December - Oelwein, IA
  • Average rainfall in December: 1.26"

The wettest month (with the highest rainfall) is June (5").
The driest month (with the least rainfall) is January (0.94").

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Average rainfall days in December
Oelwein, IA

Average rainfall days in December - Oelwein, IA
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is June (19.4 days).
The month with the least rainy days is January (3.5 days).

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Average snowfall in December
Oelwein, IA

Average snowfall in December - Oelwein, IA
  • Average snowfall in December: 2.76"

The month with the highest snowfall is February (5.08").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Oelwein, IA

Average snowfall days in December - Oelwein, IA
  • Average snowfall days in December: 8.7 days

The month with the highest number of snowfall days is February (10.5 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
Oelwein, IA

Average daylight in December / Average sunshine in December - Oelwein, 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 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 36min).

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Average sunshine days in December
Oelwein, IA

Average sunshine days in December - Oelwein, IA
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is June (7.8 days).

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Average UV index in December
Oelwein, IA

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

The month with the highest UV index is June (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
Oelwein, IA

Average cloud cover in December - Oelwein, IA
  • Average cloud cover in December: 58

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in December
Oelwein, IA

Average visibility in December - Oelwein, IA
  • Average visibility in December: 6mi

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

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Oelwein, Iowa, USA

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