December weather forecast
Gravois Mills, MO

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Weather in December

December, the first month of the winter in Gravois Mills, is still a chilly month, with an average temperature varying between 29.3°F (-1.5°C) and 43.2°F (6.2°C).

Temperature

December shows a mild decline in the average high-temperature, falling from November's fresh 53.8°F (12.1°C) to a frosty 43.2°F (6.2°C). Throughout December nights, Gravois Mills experiences a consistent temperature average of 29.3°F (-1.5°C).

Humidity

The average relative humidity in December is 76%.

Rainfall

In Gravois Mills, during December, the rain falls for 7.2 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Gravois Mills, during the entire year, the rain falls for 145.6 days and collects up to 30.35" (771mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Gravois Mills, in December, snow falls for 4.1 days, with typically accumulated 1.18" (30mm) of snow. In Gravois Mills, during the entire year, snow falls for 19.9 days and aggregates up to 9.45" (240mm) of snow.

Daylight

December has the shortest days of the year in Gravois Mills, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:09 am and sunset at 4:51 pm. On the last day of December, sunrise is at 7:28 am and sunset at 5:01 pm CST.

Sunshine

The average sunshine in December is 5.2h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 2 during December translates into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

During December, Gravois Mills experiences an average high-temperature of 43.2°F (6.2°C) and a low-temperature of 29.3°F (-1.5°C). The average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 100.4°F (38°C).

What is the average humidity in December?

In December, the average relative humidity is 76%.

How many days does it rain in December?

In Gravois Mills, in December, during 7.2 rainfall days, 1.61" (41mm) of precipitation is typically accumulated.

How much does it snow in Gravois Mills in December?

In Gravois Mills, in December, snow falls for 4.1 days, with typically accumulated 1.18" (30mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 36min of daylight.

What is the average length of the day in December?

The average day length in December is 9h and 33min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:09 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:01 pm CST.

How long on average sun shines in December?

In Gravois Mills, the average sunshine duration in December is 5.2h.

What are the months with the lowest UV index?

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

What is the UV index intensity in December?

In Gravois Mills, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to the Sun's 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
Gravois Mills, MO

Average temperature in December - Gravois Mills, MO
  • Average high temperature in December: 43.2°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in December
Gravois Mills, MO

Average pressure in December - Gravois Mills, 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 (29.92"Hg).

Average wind speed in December
Gravois Mills, MO

Average wind speed in December - Gravois Mills, MO
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is January (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in December
Gravois Mills, MO

Average humidity in December - Gravois Mills, MO
  • Average humidity in December: 76%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).

Average rainfall in December
Gravois Mills, MO

Average rainfall in December - Gravois Mills, MO
  • Average rainfall in December: 1.61"

The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is January (1.38").

Average rainfall days in December
Gravois Mills, MO

Average rainfall days in December - Gravois Mills, MO
  • Average rainfall days in December: 7.2 days

The month with the highest number of rainy days is May (17 days).
The months with the least rainy days are January and December (7.2 days).

Average snowfall in December
Gravois Mills, MO

Average snowfall in December - Gravois Mills, MO
  • Average snowfall in December: 1.18"

The month with the highest snowfall is February (3.54").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Gravois Mills, MO

Average snowfall days in December - Gravois Mills, MO
  • Average snowfall days in December: 4.1 days

The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Gravois Mills, MO

Average daylight in December / Average sunshine in December - Gravois Mills, MO
  • Average daylight in December: 9h and 4min

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 36min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

Average sunshine days in December
Gravois Mills, MO

Average sunshine days in December - Gravois Mills, MO
  • Average sunshine days in December: 19.8 days

The month with the most sunshine days is December (19.8 days).
The month with the least sunshine days is May (11 days).

Average UV index in December
Gravois Mills, MO

Average UV index in December - Gravois Mills, 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).

Average cloud cover in December
Gravois Mills, MO

Average cloud cover in December - Gravois Mills, MO
  • Average cloud cover in December: 44

The months with the most cloud cover are February and March (Cloud cover 47).
The months with the least cloud cover are June, July and August (Cloud cover 28).

Average visibility in December
Gravois Mills, MO

Average visibility in December - Gravois Mills, MO
  • Average visibility in December: 6mi

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

Gravois Mills, Missouri, USA

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