December weather forecast and climate
Treloar, MO

The first month of the winter, December, is still a chilly month in Treloar, Missouri, with average temperature varying between 43°F (6.1°C) and 29.5°F (-1.4°C).

Temperature

In Treloar, the average high-temperature drops, from a fresh 53.8°F (12.1°C) in November, to a frosty 43°F (6.1°C). The average low-temperature, in December, is 29.5°F (-1.4°C).

Humidity

The average relative humidity in December is 76%.

Rainfall

In Treloar, during December, the rain falls for 6.8 days and regularly aggregates up to 1.18" (30mm) of precipitation. In Treloar, during the entire year, the rain falls for 129.1 days and collects up to 20.59" (523mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Treloar, during December, snow falls for 4.3 days and regularly aggregates up to 1.18" (30mm) of snow. Throughout the year, in Treloar, Missouri, there are 21.5 snowfall days, and 4.92" (125mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9.5h of daylight.

Sunshine

The average sunshine in Treloar is 4.9h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Treloar. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Treloar?

The average high-temperature, in December, in Treloar, Missouri, is 43°F (6.1°C), while the average low-temperature is 29.5°F (-1.4°C).

What is the average humidity in December in Treloar?

The average relative humidity in December in Treloar, Missouri, is 76%.

How much does it rain in Treloar in December?

In Treloar, during December, the rain falls for 6.8 days and regularly aggregates up to 1.18" (30mm) of precipitation.

How much does it snow in Treloar in December?

In Treloar, in December, snow falls for 4.3 days, with typically accumulated 1.18" (30mm) of snow.

What is the month with the shortest days in Treloar?

December has the shortest days of the year in Treloar, with an average of 9.5h of daylight.

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

In Treloar, the average length of the day in December is 9.5h.

How long on average sun shines in December in Treloar?

In Treloar, Missouri, the average sunshine in December is 4.9h.

When is the lowest UV index in Treloar?

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

How high is the UV index in December in Treloar?

In Treloar, Missouri, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to the UV radiation.
Average temperature in December - Treloar, MO
  • Average high temperature in December: 6.1°C

The warmest month (with the highest average high temperature) is July (31.7°C).
The month with the lowest average high temperature is January (3.6°C).

  • Average low temperature in December: -1.4°C

The month with the highest average low temperature is July (19.9°C).
The coldest month (with the lowest average low temperature) is January (-4.4°C).

Average pressure in December - Treloar, MO
  • Average pressure in December: 1020.3mbar

The month with the highest atmospheric pressure is January (1021.2mbar).
The month with the lowest atmospheric pressure is June (1013.1mbar).

Average wind speed in December - Treloar, MO
  • Average wind speed in December: 12.8km/h

The windiest month (with the highest average wind speed) is January (13.6km/h).
The calmest months (with the lowest average wind speed) are July and August (8.6km/h).

Average humidity in December - Treloar, 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 - Treloar, MO
  • Average rainfall in December: 30mm

The wettest month (with the highest rainfall) is May (65mm).
The driest month (with the least rainfall) is January (26mm).

Average rainfall days in December - Treloar, MO
  • Average rainfall days in December: 6.8 days

The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (6.4 days).

Average snowfall in December - Treloar, MO
  • Average snowfall in December: 30mm

The month with the highest snowfall is February (43mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in December - Treloar, MO
  • Average snowfall days in December: 4.3 days

The month with the highest number of snowfall days is January (6.7 days).
Months with the least snowfall days are May, June, July and August (0 days).

Average daylight in December / Average sunshine in December - Treloar, MO
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 4.9h

The month with the most sunshine is June (Average sunshine: 10.5h).
Months with the least sunshine are January and February (Average sunshine: 4.7).

Average sunshine days in December - Treloar, MO
  • Average sunshine days in December: 19.8 days

The month with the most sunshine days is January (20.2 days).
The month with the least sunshine days is May (12.8 days).

Average UV index in December - Treloar, MO
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December - Treloar, MO
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in December - Treloar, MO
  • Average visibility in December: 9km

Months with the highest visibility are January, February, March, April, June, July, September, October, November and December (9km).
Months with the lowest visibility are May and August (8km).