December weather forecast
Monticello, AR

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Weather in December

By December, Monticello is steeped in winter, with lingering cold temperatures making their presence felt. Short days and long, chilly nights become the norm, defining December weather in the city. The occasional snowfall, although minimal at 0.04" (1mm), adds to the wintry atmosphere of Monticello. With rainfall accounting for 3.86" (98mm), this month witnesses the second-highest precipitation after March, mostly falling as rain. As the year draws to a close, the chill in the air lends a frosty touch to the city, wrapping up the weather cycle in Monticello.

Temperature

The onset of December is marked by a minor decrease in temperature, transitioning from an enjoyable 61.9°F (16.6°C) in November to a cool 53.8°F (12.1°C). Throughout December, Monticello records an average temperature of 40.3°F (4.6°C) at night.

Humidity

The months with the highest humidity are February, March and December, with an average relative humidity of 79%.

Rainfall

In Monticello, during December, the rain falls for 11.9 days and regularly aggregates up to 3.86" (98mm) of precipitation. Throughout the year, there are 156.2 rainfall days, and 38.82" (986mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.4 snowfall days, it receives 0.04" (1mm) of snow. In Monticello, during the entire year, snow falls for 2.6 days and aggregates up to 1.18" (30mm) of snow.

Daylight

The month with the shortest days is December, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 6:54 am and sunset at 4:58 pm. On the last day of December, sunrise is at 7:11 am and sunset at 5:09 pm CST.

Sunshine

The average sunshine in December is 5.1h.

UV index

January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 3 translates into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Monticello in December?

In Monticello, 53.8°F (12.1°C) is the average high-temperature and 40.3°F (4.6°C) is the average low-temperature during December. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in September is evaluated at 96.8°F (36°C).

What is the most humid month?

The months with the highest humidity are February, March and December, with an average relative humidity of 79%.

What is the average humidity in December?

In Monticello, the average relative humidity in December is 79%.

How many days does it rain in December?

In Monticello, in December, it is raining for 11.9 days, with typically 3.86" (98mm) of accumulated precipitation.

When does it start to snow?

December is the first month it typically snows. Throughout December, in the average 0.4 snowfall days, it receives 0.04" (1mm) of snow.

What is the month with the shortest days?

With an average of 10h and 0min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

In December, the average day length is 9h and 58min.

What time are sunrise and sunset in December in Monticello?

In December, on the first day of the month, sunrise is at 6:54 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:09 pm CST.

How many hours of sunshine does Monticello have in December?

The average sunshine duration in December is 5.1h.

When is the lowest UV index in Monticello?

The months with the lowest UV index are January and December, with an average maximum UV index of 3.

What is the UV index intensity in December?

The average daily maximum UV index in December in Monticello is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Monticello, AR

Average temperature in December - Monticello, AR
  • Average high temperature in December: 53.8°F

The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (51.1°F).

  • Average low temperature in December: 40.3°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).

Average pressure in December
Monticello, AR

Average pressure in December - Monticello, AR
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
Monticello, AR

Average wind speed in December - Monticello, AR
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in December
Monticello, AR

Average humidity in December - Monticello, AR
  • Average humidity in December: 79%

The months with the highest relative humidity are February, March and December (79%).
The month with the lowest relative humidity is October (69%).

Average rainfall in December
Monticello, AR

Average rainfall in December - Monticello, AR
  • Average rainfall in December: 3.86"

The wettest month (with the highest rainfall) is April (4.53").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in December
Monticello, AR

Average rainfall days in December - Monticello, AR
  • Average rainfall days in December: 11.9 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is October (9.6 days).

Average snowfall in December
Monticello, AR

Average snowfall in December - Monticello, AR
  • Average snowfall in December: 0.04"

The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Monticello, AR

Average snowfall days in December - Monticello, AR
  • Average snowfall days in December: 0.4 days

The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Monticello, AR

Average daylight in December / Average sunshine in December - Monticello, AR
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in December
Monticello, AR

Average sunshine days in December - Monticello, AR
  • Average sunshine days in December: 17 days

The month with the most sunshine days is October (20.4 days).
The month with the least sunshine days is August (12.3 days).

Average UV index in December
Monticello, AR

Average UV index in December - Monticello, AR
  • Average UV index in December: 3

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in December
Monticello, AR

Average cloud cover in December - Monticello, AR
  • Average cloud cover in December: 45

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 25).

Average visibility in December
Monticello, AR

Average visibility in December - Monticello, AR
  • 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).

Monticello, Arkansas, USA

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