December weather forecast
Tarkio, MO

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Weather in December

December brings back the wintry landscape of Tarkio, Missouri with temperatures plunging down to 23.9°F (-4.5°C). The first signs of snowfall are a clear indication of another cycle of cold weather ahead. This time of year paints a picturesque winter scene with snow-covered surfaces that add to the festive holiday spirit.

Temperature

Tarkio's transition into December involves a shift in temperature, receding from a cool 50.2°F (10.1°C) in November to a cold 36.5°F (2.5°C). An average low-temperature of 23.9°F (-4.5°C) is expected during December.

Humidity

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

Rainfall

In Tarkio, during December, the rain falls for 4 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, 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 Tarkio, Missouri, in December, snow falls for 4.5 days, with typically accumulated 1.46" (37mm) of snow. Throughout the year, there are 23.5 snowfall days, and 10.51" (267mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:26 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

In Tarkio, 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 reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: In December, an average UV index of 2 transforms into the following instructions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Updated: Jun 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

In Tarkio, in December, the average high-temperature 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. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 91.4°F (33°C).

What is the average humidity in December?

The average relative humidity in December is 76%.

How much does it rain in December?

In Tarkio, in December, during 4 rainfall days, 0.94" (24mm) of precipitation is typically accumulated.

How much does it snow in Tarkio in December?

In Tarkio, in December, snow falls for 4.5 days, with typically accumulated 1.46" (37mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

How many hours of daylight does Tarkio have in December?

In December, the average day length is 9h and 20min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:26 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.

How long on average sun shines in December?

In December, the average sunshine duration is 5.2h.

When is the lowest UV index?

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

What is the UV index reading in December?

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 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
Tarkio, MO

Average temperature in December - Tarkio, 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).

Average pressure in December
Tarkio, MO

Average pressure in December - Tarkio, 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).

Average wind speed in December
Tarkio, MO

Average wind speed in December - Tarkio, 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).

Average humidity in December
Tarkio, MO

Average humidity in December - Tarkio, 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%).

Average rainfall in December
Tarkio, MO

Average rainfall in December - Tarkio, 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").

Average rainfall days in December
Tarkio, MO

Average rainfall days in December - Tarkio, 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).

Average snowfall in December
Tarkio, MO

Average snowfall in December - Tarkio, 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").

Average snowfall days in December
Tarkio, MO

Average snowfall days in December - Tarkio, 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).

Average daylight in December /
Average sunshine in December
Tarkio, MO

Average daylight in December / Average sunshine in December - Tarkio, 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 18min).

  • 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).

Average sunshine days in December
Tarkio, MO

Average sunshine days in December - Tarkio, 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).

Average UV index in December
Tarkio, MO

Average UV index in December - Tarkio, 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
Tarkio, MO

Average cloud cover in December - Tarkio, 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).

Average visibility in December
Tarkio, MO

Average visibility in December - Tarkio, 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).

Tarkio, Missouri, USA

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