December weather forecast
Mendon, MO

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Weather in December

The first month of the winter, December, is still a cold month in Mendon, Missouri, with an average temperature varying between 38.7°F (3.7°C) and 26.1°F (-3.3°C).

Temperature

The shift from November to December involves a decrease in the average high-temperature, from a fresh 50.9°F (10.5°C) to a cold 38.7°F (3.7°C). Mendon's temperature lowers to a mean of 26.1°F (-3.3°C) during the nights in December.

Humidity

In Mendon, Missouri, the average relative humidity in December is 78%.

Rainfall

The month with the least rainfall in Mendon is December, when the rain falls for 4.5 days and typically collects 0.43" (11mm) of precipitation.

Snowfall

Months with snowfall in Mendon, Missouri, are January through April, October through December. In Mendon, in December, during 4.1 snowfall days, 0.35" (9mm) of snow is typically accumulated. In Mendon, during the entire year, snow falls for 20.6 days and aggregates up to 2.99" (76mm) of snow.

Daylight

December has the shortest days of the year in Mendon, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:14 am and sunset at 4:48 pm. On the last day of December, in Mendon, sunrise is at 7:33 am and sunset at 4:58 pm CST.

Sunshine

The average sunshine in December in Mendon is 5h.

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 reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 2 in December transforms into the following instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Boost your sun resistance with garments that are densely woven yet spacious. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

How cold does it get in Mendon in December?

In December, in Mendon, the average high-temperature is 38.7°F (3.7°C), and the average low-temperature is 26.1°F (-3.3°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 91.4°F (33°C).

What is the average humidity in December in Mendon?

In December, the average relative humidity is 78%.

What is the driest month in Mendon?

The month with the least rainfall is December, when the rain falls for 4.5 days and typically collects 0.43" (11mm) of precipitation.

How much does it rain in Mendon in December?

In Mendon, Missouri, in December, it is raining for 4.5 days, with typically 0.43" (11mm) of accumulated precipitation.

How many days does it snow in December in Mendon?

In December, in Mendon, it is snowing for 4.1 days. Throughout December, 0.35" (9mm) of snow is accumulated.

What is the month with the shortest days in Mendon?

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

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

In Mendon, Missouri, the average day length in December is 9h and 26min.

When are sunrise and sunset in December in Mendon?

On the first day of December in Mendon, sunrise is at 7:14 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:58 pm CST.

How many hours of sunshine does Mendon have in December?

The average sunshine duration in December is 5h.

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

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

How high is the UV index in December in Mendon?

In December, the average daily maximum UV index in Mendon is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Mendon, MO

Average temperature in December - Mendon, MO
  • Average high temperature in December: 38.7°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in December: 26.1°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

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Average pressure in December
Mendon, MO

Average pressure in December - Mendon, MO
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in December
Mendon, MO

Average wind speed in December - Mendon, MO
  • Average wind speed in December: 9.4mph

The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

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Average humidity in December
Mendon, MO

Average humidity in December - Mendon, MO
  • Average humidity in December: 78%

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

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Average rainfall in December
Mendon, MO

Average rainfall in December - Mendon, MO
  • Average rainfall in December: 0.43"

The wettest months (with the highest rainfall) are May and June (1.46").
The driest month (with the least rainfall) is December (0.43").

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Average rainfall days in December
Mendon, MO

Average rainfall days in December - Mendon, MO
  • Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is January (4.2 days).

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Average snowfall in December
Mendon, MO

Average snowfall in December - Mendon, MO
  • Average snowfall in December: 0.35"

The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Mendon, MO

Average snowfall days in December - Mendon, MO
  • Average snowfall days in December: 4.1 days

The month with the highest number of snowfall days is January (6.5 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
Mendon, MO

Average daylight in December / Average sunshine in December - Mendon, MO
  • 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: 5h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in December
Mendon, MO

Average sunshine days in December - Mendon, MO
  • Average sunshine days in December: 23.5 days

The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is May (13.8 days).

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Average UV index in December
Mendon, MO

Average UV index in December - Mendon, 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
Mendon, MO

Average cloud cover in December - Mendon, MO
  • Average cloud cover in December: 45

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in December
Mendon, MO

Average visibility in December - Mendon, 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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Mendon, Missouri, USA

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