December weather forecast
Ionia, MO

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Weather in December

December, the first month of the winter in Ionia, is still a cold month, with an average temperature varying between 28.6°F (-1.9°C) and 42.3°F (5.7°C).

Temperature

December suggests a modest reduction in the average high-temperature, shifting from a fresh 53.1°F (11.7°C) in November to a cold 42.3°F (5.7°C). During the month of December, the nighttime temperature in Ionia, Missouri, falls to an average of 28.6°F (-1.9°C).

Humidity

In Ionia, the average relative humidity in December is 75%.

Rainfall

In Ionia, during December, the rain falls for 7.1 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, in Ionia, there are 130 rainfall days, and 21.81" (554mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, November and December. In December, in Ionia, Missouri, it is snowing for 3.7 days. Throughout December, 1.18" (30mm) of snow is accumulated. Throughout the year, in Ionia, there are 19.3 snowfall days, and 5.39" (137mm) of snow is accumulated.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of December in Ionia, sunrise is at 7:12 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:02 pm CST.

Sunshine

In Ionia, the average sunshine in December is 5.2h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: In December, the UV index of 2 transforms into the following advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. When the Sun is at its strongest around midday, find shade and limit exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is it in Ionia in December?

The average high-temperature, in December, in Ionia, is 42.3°F (5.7°C), while the average low-temperature is 28.6°F (-1.9°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 95°F (35°C).

What is the average humidity in December in Ionia?

In Ionia, Missouri, the average relative humidity in December is 75%.

How much does it rain in Ionia in December?

In Ionia, Missouri, during December, the rain falls for 7.1 days and regularly aggregates up to 1.14" (29mm) of precipitation.

How many days does it snow in December in Ionia?

In Ionia, Missouri, during December, snow falls for 3.7 days and regularly aggregates up to 1.18" (30mm) of snow.

What is the month with the shortest days in Ionia?

December has the shortest days of the year in Ionia, with an average of 9h and 30min of daylight.

How many hours of daylight does Ionia have in December?

The average day length in December in Ionia is 9h and 32min.

What time are sunrise and sunset in December in Ionia?

On the first day of December in Ionia, sunrise is at 7:12 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:02 pm CST.

How many hours of sunshine does Ionia have in December?

The average sunshine duration in December in Ionia, Missouri, is 5.2h.

When is the lowest UV index in Ionia?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Ionia, Missouri.

What is the UV index reading in December in Ionia?

In Ionia, Missouri, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk 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
Ionia, MO

Average temperature in December - Ionia, MO
  • Average high temperature in December: 42.3°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in December: 28.6°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).

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Average pressure in December
Ionia, MO

Average pressure in December - Ionia, MO
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
Ionia, MO

Average wind speed in December - Ionia, MO
  • Average wind speed in December: 9.6mph

The windiest month (with the highest average wind speed) is March (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in December
Ionia, MO

Average humidity in December - Ionia, MO
  • Average humidity in December: 75%

The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in December
Ionia, MO

Average rainfall in December - Ionia, MO
  • Average rainfall in December: 1.14"

The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is January (0.87").

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Average rainfall days in December
Ionia, MO

Average rainfall days in December - Ionia, MO
  • Average rainfall days in December: 7.1 days

The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (5.5 days).

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Average snowfall in December
Ionia, MO

Average snowfall in December - Ionia, MO
  • Average snowfall in December: 1.18"

The month with the highest snowfall is January (1.77").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in December
Ionia, MO

Average snowfall days in December - Ionia, MO
  • Average snowfall days in December: 3.7 days

The month with the highest number of snowfall days is February (6.1 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
Ionia, MO

Average daylight in December / Average sunshine in December - Ionia, MO
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

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Average sunshine days in December
Ionia, MO

Average sunshine days in December - Ionia, MO
  • Average sunshine days in December: 20.6 days

The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is May (12.9 days).

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Average UV index in December
Ionia, MO

Average UV index in December - Ionia, MO
  • Average UV index in December: 2

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

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Average cloud cover in December
Ionia, MO

Average cloud cover in December - Ionia, MO
  • Average cloud cover in December: 44

The month with the most cloud cover is March (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 28).

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Average visibility in December
Ionia, MO

Average visibility in December - Ionia, MO
  • 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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Ionia, Missouri, USA

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