December weather forecast
Meredosia, IL

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Weather in December

The first month of the winter, December, is also an icy month in Meredosia, Illinois, with an average temperature ranging between max 38.5°F (3.6°C) and min 26.8°F (-2.9°C).

Temperature

The decrease of average high-temperatures is mild in December, with a decline from a fresh 50°F (10°C) in November to a wintry 38.5°F (3.6°C). Meredosia throughout December, experiences an average nighttime temperature of 26.8°F (-2.9°C).

Humidity

The average relative humidity in December in Meredosia is 78%.

Rainfall

In Meredosia, in December, it is raining for 6.4 days, with typically 1.06" (27mm) of accumulated precipitation. Throughout the year, in Meredosia, there are 132 rainfall days, and 22.17" (563mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Meredosia are January through April, November and December. In Meredosia, during December, snow falls for 4.7 days and regularly aggregates up to 1.18" (30mm) of snow. In Meredosia, during the entire year, snow falls for 23.8 days and aggregates up to 8.5" (216mm) of snow.

Daylight

The month with the shortest days in Meredosia is December, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:05 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:47 pm CST.

Sunshine

The average sunshine in December is 4.6h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Meredosia. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: In December, the maximum UV index of 2 transforms into these recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Frequently asked questions

Is it cold in Meredosia during December?

December temperatures in Meredosia, Illinois, vary between a high-temperature of 38.5°F (3.6°C) and a low-temperature of 26.8°F (-2.9°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 91.4°F (33°C).

What is the average humidity in December in Meredosia?

In Meredosia, Illinois, the average relative humidity in December is 78%.

How much does it rain in Meredosia in December?

In Meredosia, Illinois, in December, during 6.4 rainfall days, 1.06" (27mm) of precipitation is typically accumulated.

How much does it snow in Meredosia in December?

In Meredosia, Illinois, in December, snow falls for 4.7 days, with typically accumulated 1.18" (30mm) of snow.

What is the month with the shortest days in Meredosia?

December has the shortest days of the year in Meredosia, with an average of 9h and 24min of daylight.

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

In December, the average day length in Meredosia is 9h and 24min.

When are sunrise and sunset in December in Meredosia?

In December, on the first day of the month, sunrise is at 7:05 am and sunset at 4:38 pm. On the last day of the month, in Meredosia, sunrise is at 7:23 am and sunset at 4:47 pm CST.

How many hours of sunshine does Meredosia have in December?

In Meredosia, the average sunshine duration in December is 4.6h.

What are the months with the lowest UV index in Meredosia?

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

How high is the UV index in December in Meredosia?

In December, the average daily maximum UV index in Meredosia is 2. A UV Index value of 2, and less, symbolizes 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
Meredosia, IL

Average temperature in December - Meredosia, IL
  • Average high temperature in December: 38.5°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (32.7°F).

  • Average low temperature in December: 26.8°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

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Average pressure in December
Meredosia, IL

Average pressure in December - Meredosia, IL
  • 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 (29.91"Hg).

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Average wind speed in December
Meredosia, IL

Average wind speed in December - Meredosia, IL
  • Average wind speed in December: 9.7mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).

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Average humidity in December
Meredosia, IL

Average humidity in December - Meredosia, IL
  • Average humidity in December: 78%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in December
Meredosia, IL

Average rainfall in December - Meredosia, IL
  • Average rainfall in December: 1.06"

The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (0.98").

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Average rainfall days in December
Meredosia, IL

Average rainfall days in December - Meredosia, IL
  • Average rainfall days in December: 6.4 days

The month with the highest number of rainy days is May (16.9 days).
The months with the least rainy days are January and February (5.3 days).

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Average snowfall in December
Meredosia, IL

Average snowfall in December - Meredosia, IL
  • Average snowfall in December: 1.18"

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

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Average snowfall days in December
Meredosia, IL

Average snowfall days in December - Meredosia, IL
  • Average snowfall days in December: 4.7 days

The month with the highest number of snowfall days is January (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
Meredosia, IL

Average daylight in December / Average sunshine in December - Meredosia, IL
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 4h and 4min

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 18min).

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Average sunshine days in December
Meredosia, IL

Average sunshine days in December - Meredosia, IL
  • Average sunshine days in December: 19.4 days

The month with the most sunshine days is January (20 days).
The month with the least sunshine days is May (11.4 days).

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Average UV index in December
Meredosia, IL

Average UV index in December - Meredosia, IL
  • 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
Meredosia, IL

Average cloud cover in December - Meredosia, IL
  • Average cloud cover in December: 50

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July, August and September (Cloud cover 30).

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Average visibility in December
Meredosia, IL

Average visibility in December - Meredosia, IL
  • 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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Meredosia, Illinois, USA

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