December weather forecast
Palmyra, MO

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Weather in December

The first month of the winter, December, is also a wintry month in Palmyra, Missouri, with an average temperature ranging between min 27.1°F (-2.7°C) and max 39.6°F (4.2°C).

Temperature

December brings a minor decrease, with the average high-temperature reducing from a fresh 50.9°F (10.5°C) in November to a wintry 39.6°F (4.2°C). An average low-temperature of 27.1°F (-2.7°C) is recorded during the nights in December in Palmyra.

Humidity

In Palmyra, the average relative humidity in December is 77%.

Rainfall

In Palmyra, during December, the rain falls for 7.2 days and regularly aggregates up to 1.54" (39mm) of precipitation. In Palmyra, during the entire year, the rain falls for 138.1 days and collects up to 26.97" (685mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In Palmyra, in December, during 4.5 snowfall days, 1.54" (39mm) of snow is typically accumulated. Throughout the year, there are 23 snowfall days, and 9.92" (252mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:08 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:51 pm CST.

Sunshine

In Palmyra, the average sunshine in December 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. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

The high-temperature, in December, in Palmyra, is 39.6°F (4.2°C), while the low-temperature averages to 27.1°F (-2.7°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is evaluated at 93.2°F (34°C).

What is the average humidity in December?

In December, the average relative humidity is 77%.

How much does it rain in December?

In Palmyra, in December, it is raining for 7.2 days, with typically 1.54" (39mm) of accumulated precipitation.

How much does it snow in December?

In Palmyra, during December, snow falls for 4.5 days and regularly aggregates up to 1.54" (39mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does Palmyra have in December?

The average day length in December is 9h and 25min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:08 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:51 pm CST.

How many hours of sunshine does Palmyra have in December?

The average sunshine duration in December is 4.9h.

What is the month 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 reading in December?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from 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
Palmyra, MO

Average temperature in December - Palmyra, MO
  • Average high temperature in December: 39.6°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in December: 27.1°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average pressure in December
Palmyra, MO

Average pressure in December - Palmyra, MO
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in December
Palmyra, MO

Average wind speed in December - Palmyra, MO
  • Average wind speed in December: 9.6mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).

Average humidity in December
Palmyra, MO

Average humidity in December - Palmyra, MO
  • Average humidity in December: 77%

The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (70%).

Average rainfall in December
Palmyra, MO

Average rainfall in December - Palmyra, MO
  • Average rainfall in December: 1.54"

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is January (1.3").

Average rainfall days in December
Palmyra, MO

Average rainfall days in December - Palmyra, MO
  • Average rainfall days in December: 7.2 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (5.4 days).

Average snowfall in December
Palmyra, MO

Average snowfall in December - Palmyra, MO
  • Average snowfall in December: 1.54"

The month with the highest snowfall is January (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Palmyra, MO

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

The month with the highest number of snowfall days is January (7.3 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
Palmyra, MO

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in December
Palmyra, MO

Average sunshine days in December - Palmyra, MO
  • Average sunshine days in December: 19.4 days

The months with the most sunshine days are January and December (19.4 days).
The month with the least sunshine days is May (11.8 days).

Average UV index in December
Palmyra, MO

Average UV index in December - Palmyra, 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
Palmyra, MO

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

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in December
Palmyra, MO

Average visibility in December - Palmyra, 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).

Palmyra, Missouri, USA

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