December weather forecast
Vinton, IA

Weather in December

The first month of the winter, December, is also a wintry month in Vinton, Iowa, with temperature in the range of an average high of 32.2°F (0.1°C) and an average low of 21.6°F (-5.8°C).

Temperature

In December, the average high-temperature drops from a chilly 45°F (7.2°C) in November to a wintry 32.2°F (0.1°C). In Vinton, the average low-temperature is 21.6°F (-5.8°C).

Humidity

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

Rainfall

In Vinton, Iowa, in December, it is raining for 3.8 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, there are 103.1 rainfall days, and 10.63" (270mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In Vinton, Iowa, during December, snow falls for 5.5 days and regularly aggregates up to 0.47" (12mm) of snow. In Vinton, during the entire year, snow falls for 29.1 days and aggregates up to 4.92" (125mm) of snow.

Daylight

December has the shortest days of the year in Vinton, with an average of 9h and 10min of daylight.
On the first day of December, sunrise is at 7:17 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:45 pm CST.

Sunshine

In December, the average sunshine in Vinton is 4.3h.

UV index

December is the month with the lowest UV index in Vinton, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in December in Vinton?

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

How much does it rain in Vinton in December?

In Vinton, in December, during 3.8 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

How many days does it snow in December in Vinton?

In Vinton, Iowa, in December, during 5.5 snowfall days, 0.47" (12mm) of snow is typically accumulated.

What is the month with the shortest days in Vinton?

The month with the shortest days in Vinton, Iowa, is December, with an average of 9h and 10min of daylight.

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

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

When is the sunrise / sunset in December in Vinton?

In December, on the first day of the month, sunrise is at 7:17 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:45 pm CST.

How long on average sun shines in December in Vinton?

In December, the average sunshine duration is 4.3h.

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

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

What is the UV index reading in December in Vinton?

The average daily maximum UV index in December in Vinton, Iowa, is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Vinton, IA

Average temperature in December - Vinton, IA
  • Average high temperature in December: 32.2°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 (25.3°F).

  • Average low temperature in December: 21.6°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).

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Average pressure in December
Vinton, IA

Average pressure in December - Vinton, 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
Vinton, IA

Average wind speed in December - Vinton, 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).

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Average humidity in December
Vinton, IA

Average humidity in December - Vinton, 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 (72%).

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Average rainfall in December
Vinton, IA

Average rainfall in December - Vinton, IA
  • Average rainfall in December: 0.43"

The wettest month (with the highest rainfall) is May (1.85").
The driest month (with the least rainfall) is February (0.39").

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Average rainfall days in December
Vinton, IA

Average rainfall days in December - Vinton, IA
  • Average rainfall days in December: 3.8 days

The month with the highest number of rainy days is June (13.9 days).
The month with the least rainy days is February (3.4 days).

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Average snowfall in December
Vinton, IA

Average snowfall in December - Vinton, IA
  • Average snowfall in December: 0.47"

The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Vinton, IA

Average snowfall days in December - Vinton, IA
  • Average snowfall days in December: 5.5 days

The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Vinton, IA
  • Average daylight in December: 9h and 10min

The month with the longest days is June (Average daylight: 15h and 13min).
The month with the shortest days is December (Average daylight: 9h and 10min).

  • Average sunshine in December: 4h and 18min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in December
Vinton, IA

Average sunshine days in December - Vinton, IA
  • Average sunshine days in December: 21.9 days

The month with the most sunshine days is December (21.9 days).
The month with the least sunshine days is June (13.4 days).

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Average UV index in December
Vinton, IA

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

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

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Average cloud cover in December
Vinton, IA

Average cloud cover in December - Vinton, IA
  • Average cloud cover in December: 55

The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 31).

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Average visibility in December
Vinton, IA

Average visibility in December - Vinton, 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).

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