December weather forecast
Fairfax, MO

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Weather in December

The first month of the winter, December, is also an icy month in Fairfax, Missouri, with an average temperature varying between 36.5°F (2.5°C) and 23.9°F (-4.5°C).

Temperature

Fairfax, Missouri, in December demonstrates a small temperature transition, adjusting from an average high of a cool 50.2°F (10.1°C) in November to a wintry 36.5°F (2.5°C). The temperature in Fairfax dips to an average of 23.9°F (-4.5°C) during December nights.

Humidity

In December, the average relative humidity in Fairfax is 76%.

Rainfall

In December, the rain falls for 4 days. Throughout December, 0.94" (24mm) of precipitation is accumulated. Throughout the year, in Fairfax, Missouri, there are 120.8 rainfall days, and 24.09" (612mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In Fairfax, in December, snow falls for 4.5 days, with typically accumulated 1.46" (37mm) of snow. In Fairfax, during the entire year, snow falls for 23.5 days and aggregates up to 10.51" (267mm) of snow.

Daylight

The month with the shortest days in Fairfax is December, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:25 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:05 pm CST.

Sunshine

The average sunshine in December in Fairfax 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 in Fairfax. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 2 in December translates into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. To guard against the harmful effects of the Sun, minimize exposure during midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Frequently asked questions

How cold is December in Fairfax?

An average high-temperature, in December, in Fairfax, is 36.5°F (2.5°C) and the average low-temperature is 23.9°F (-4.5°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 91.4°F (33°C).

What is the average humidity in December in Fairfax?

In December, the average relative humidity in Fairfax is 76%.

How many days does it rain in December in Fairfax?

In Fairfax, Missouri, in December, it is raining for 4 days, with typically 0.94" (24mm) of accumulated precipitation.

How much does it snow in Fairfax in December?

In December, it is snowing for 4.5 days. Throughout December, 1.46" (37mm) of snow is accumulated.

What is the month with the shortest days in Fairfax?

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

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

The average day length in December is 9h and 21min.

When are sunrise and sunset in December in Fairfax?

In December, on the first day of the month, sunrise is at 7:25 am and sunset at 4:55 pm. On the last day of the month, in Fairfax, sunrise is at 7:44 am and sunset at 5:05 pm CST.

How many hours of sunshine does Fairfax have in December?

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

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

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

How high is the UV index in December in Fairfax?

In Fairfax, 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
Fairfax, MO

Average temperature in December - Fairfax, MO
  • Average high temperature in December: 36.5°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in December: 23.9°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

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Average pressure in December
Fairfax, MO

Average pressure in December - Fairfax, 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 (29.87"Hg).

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Average wind speed in December
Fairfax, MO

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

The windiest months (with the highest average wind speed) are March and April (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in December
Fairfax, MO

Average humidity in December - Fairfax, MO
  • Average humidity in December: 76%

The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in December
Fairfax, MO

Average rainfall in December - Fairfax, MO
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is June (4.21").
The driest month (with the least rainfall) is February (0.67").

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Average rainfall days in December
Fairfax, MO

Average rainfall days in December - Fairfax, MO
  • Average rainfall days in December: 4 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in December
Fairfax, MO

Average snowfall in December - Fairfax, MO
  • Average snowfall in December: 1.46"

The month with the highest snowfall is January (3.03").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Fairfax, MO

Average snowfall days in December - Fairfax, MO
  • Average snowfall days in December: 4.5 days

The months with the highest number of snowfall days are January and February (6.7 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
Fairfax, MO

Average daylight in December / Average sunshine in December - Fairfax, MO
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

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Average sunshine days in December
Fairfax, MO

Average sunshine days in December - Fairfax, MO
  • Average sunshine days in December: 21.5 days

The months with the most sunshine days are November and December (21.5 days).
The month with the least sunshine days is May (11.4 days).

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Average UV index in December
Fairfax, MO

Average UV index in December - Fairfax, 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
Fairfax, MO

Average cloud cover in December - Fairfax, MO
  • Average cloud cover in December: 43

The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in December
Fairfax, MO

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

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