December weather forecast
Hartsburg, MO

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Weather in December

The first month of the winter, December, is also a wintry month in Hartsburg, Missouri, with temperature in the range of an average low of 28.9°F (-1.7°C) and an average high of 42.4°F (5.8°C).

Temperature

During Hartsburg's transition into December, the average high-temperature lessens, moving from a cool 53.4°F (11.9°C) in November to an icy 42.4°F (5.8°C). Hartsburg throughout December, records an average low-temperature of 28.9°F (-1.7°C).

Humidity

The average relative humidity in December in Hartsburg is 76%.

Rainfall

In Hartsburg, in December, it is raining for 6.3 days, with typically 1.22" (31mm) of accumulated precipitation. In Hartsburg, during the entire year, the rain falls for 133.5 days and collects up to 25.2" (640mm) of precipitation.

Snowfall

January through March, October through December are months with snowfall. In December, it is snowing for 3.2 days. Throughout December, 1.06" (27mm) of snow is accumulated. Throughout the year, in Hartsburg, there are 18.2 snowfall days, and 6.97" (177mm) of snow is accumulated.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year in Hartsburg.
On the first day of the month, sunrise is at 7:08 am and sunset at 4:48 pm. On the last day of December, in Hartsburg, Missouri, sunrise is at 7:27 am and sunset at 4:58 pm CST.

Sunshine

The average sunshine in December in Hartsburg is 5.1h.

UV index

The months with the lowest UV index in Hartsburg are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: An average maximum UV index of 2 in December leads to these recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold in Hartsburg during December?

The high-temperature, in December, in Hartsburg, is 42.4°F (5.8°C), while the low-temperature averages to 28.9°F (-1.7°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 estimated at 100.4°F (38°C).

What is the average humidity in December in Hartsburg?

The average relative humidity in December in Hartsburg is 76%.

How many days does it rain in December in Hartsburg?

In Hartsburg, Missouri, during December, the rain falls for 6.3 days and regularly aggregates up to 1.22" (31mm) of precipitation.

How many days does it snow in December in Hartsburg?

In Hartsburg, in December, snow falls for 3.2 days, with typically accumulated 1.06" (27mm) of snow.

What is the month with the shortest days in Hartsburg?

The month with the shortest days is December, with an average of 9h and 30min of daylight.

How many hours of daylight does Hartsburg have in December?

In Hartsburg, the average day length in December is 9h and 31min.

When are sunrise and sunset in December in Hartsburg?

On the first day of December in Hartsburg, Missouri, sunrise is at 7:08 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:58 pm CST.

How many hours of sunshine does Hartsburg have in December?

In December, the average sunshine duration is 5.1h.

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

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 Hartsburg?

The average daily maximum UV index in December in Hartsburg is 2. A UV Index estimate of 2, and below, represents a low health threat 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
Hartsburg, MO

Average temperature in December - Hartsburg, MO
  • Average high temperature in December: 42.4°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (38.3°F).

  • Average low temperature in December: 28.9°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in December
Hartsburg, MO

Average pressure in December - Hartsburg, 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
Hartsburg, MO

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

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).

Average humidity in December
Hartsburg, MO

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

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is October (72%).

Average rainfall in December
Hartsburg, MO

Average rainfall in December - Hartsburg, MO
  • Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is January (1.14").

Average rainfall days in December
Hartsburg, MO

Average rainfall days in December - Hartsburg, MO
  • Average rainfall days in December: 6.3 days

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (5.9 days).

Average snowfall in December
Hartsburg, MO

Average snowfall in December - Hartsburg, MO
  • Average snowfall in December: 1.06"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are April, May, June, July, August and September (0").

Average snowfall days in December
Hartsburg, MO

Average snowfall days in December - Hartsburg, MO
  • Average snowfall days in December: 3.2 days

The month with the highest number of snowfall days is February (6.1 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
Hartsburg, MO

Average daylight in December / Average sunshine in December - Hartsburg, MO
  • Average daylight in December: 9h and 3min

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 30min).

  • 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 February (Average sunshine: 4h and 48min).

Average sunshine days in December
Hartsburg, MO

Average sunshine days in December - Hartsburg, MO
  • Average sunshine days in December: 20.8 days

The month with the most sunshine days is December (20.8 days).
The month with the least sunshine days is July (13.7 days).

Average UV index in December
Hartsburg, MO

Average UV index in December - Hartsburg, 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
Hartsburg, MO

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

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 28).

Average visibility in December
Hartsburg, MO

Average visibility in December - Hartsburg, 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).

Hartsburg, Missouri, USA

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