December weather forecast
McCallsburg, IA

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Weather in December

The first month of the winter, December, is also a subzero cold month in McCallsburg, Iowa, with an average temperature fluctuating between 20.5°F (-6.4°C) and 31.5°F (-0.3°C).

Temperature

McCallsburg's weather changes with the onset of December, slightly falling from a frosty 45°F (7.2°C) in November to a freezing cold 31.5°F (-0.3°C). During December, the average low-temperature is 20.5°F (-6.4°C).

Humidity

In December, the average relative humidity in McCallsburg is 81%.

Rainfall

In McCallsburg, during December, the rain falls for 5.6 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, in McCallsburg, Iowa, there are 143.3 rainfall days, and 29.25" (743mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in McCallsburg. In McCallsburg, in December, snow falls for 10.5 days, with typically accumulated 3.27" (83mm) of snow. In McCallsburg, Iowa, during the entire year, snow falls for 45.8 days and aggregates up to 16.85" (428mm) of snow.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of December in McCallsburg, Iowa, sunrise is at 7:23 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:51 pm CST.

Sunshine

The average sunshine in December is 4.5h.

UV index

The months with the lowest UV index in McCallsburg are January, February, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 2 during December translates into the following directions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

How cold is it in McCallsburg in December?

The high-temperature, in December, in McCallsburg, records 31.5°F (-0.3°C), while the low-temperature is 20.5°F (-6.4°C). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 87.8°F (31°C).

What is the average humidity in December in McCallsburg?

In McCallsburg, Iowa, the average relative humidity in December is 81%.

How many days does it rain in December in McCallsburg?

In December, the rain falls for 5.6 days. Throughout December, 1.46" (37mm) of precipitation is accumulated.

How many days does it snow in December in McCallsburg?

In McCallsburg, Iowa, during December, snow falls for 10.5 days and regularly aggregates up to 3.27" (83mm) of snow.

What is the month with the shortest days in McCallsburg?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

How many hours of daylight does McCallsburg have in December?

In McCallsburg, the average day length in December is 9h and 10min.

When is the sunrise / sunset in December in McCallsburg?

In December, on the first day of the month, sunrise is at 7:23 am and sunset at 4:42 pm. On the last day of the month, in McCallsburg, sunrise is at 7:42 am and sunset at 4:51 pm CST.

How long on average sun shines in December in McCallsburg?

The average sunshine duration in December in McCallsburg, Iowa, is 4.5h.

When is the lowest UV index in McCallsburg?

The months with the lowest UV index in McCallsburg, Iowa, are January, February, October through December, with an average maximum UV index of 2.

What is the UV index intensity in December in McCallsburg?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal hazard to health 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
McCallsburg, IA

Average temperature in December - McCallsburg, IA
  • Average high temperature in December: 31.5°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (25.5°F).

  • Average low temperature in December: 20.5°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).

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Average pressure in December
McCallsburg, IA

Average pressure in December - McCallsburg, IA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in December
McCallsburg, IA

Average wind speed in December - McCallsburg, IA
  • Average wind speed in December: 10.2mph

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).

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Average humidity in December
McCallsburg, IA

Average humidity in December - McCallsburg, IA
  • Average humidity in December: 81%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in December
McCallsburg, IA

Average rainfall in December - McCallsburg, IA
  • Average rainfall in December: 1.46"

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (0.98").

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Average rainfall days in December
McCallsburg, IA

Average rainfall days in December - McCallsburg, IA
  • Average rainfall days in December: 5.6 days

The months with the highest number of rainy days are May and June (19.2 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in December
McCallsburg, IA

Average snowfall in December - McCallsburg, IA
  • Average snowfall in December: 3.27"

The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
McCallsburg, IA

Average snowfall days in December - McCallsburg, IA
  • Average snowfall days in December: 10.5 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
McCallsburg, IA

Average daylight in December / Average sunshine in December - McCallsburg, 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 3min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in December
McCallsburg, IA

Average sunshine days in December - McCallsburg, IA
  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (8.5 days).

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Average UV index in December
McCallsburg, IA

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

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

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Average cloud cover in December
McCallsburg, IA

Average cloud cover in December - McCallsburg, IA
  • Average cloud cover in December: 53

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 31).

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Average visibility in December
McCallsburg, IA

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

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

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McCallsburg, Iowa, USA

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