Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The transition into December is accompanied by a slight temperature decrease, with the average high-temperature shifting from a moderate 58.5°F (14.7°C) in November to a frosty 49.6°F (9.8°C). Mount Vernon's nights in December cool down to an average low-temperature of 35.8°F (2.1°C).Humidity
The average relative humidity in December in Mount Vernon is 77%.Rainfall
In Mount Vernon, in December, during 8 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. Throughout the year, in Mount Vernon, Arkansas, there are 118 rainfall days, and 13.58" (345mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Mount Vernon, in December, during 0.4 snowfall days, 0.08" (2mm) of snow is typically accumulated. Throughout the year, there are 3.9 snowfall days, and 0.71" (18mm) of snow is accumulated.Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:59 am and sunset at 4:56 pm. On the last day of December, sunrise is at 7:16 am and sunset at 5:06 pm CST.
Sunshine
In December, the average sunshine is 5.4h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Mount Vernon. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 2 in December suggests the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Mount Vernon?
What is the average humidity in December in Mount Vernon?
How much does it rain in Mount Vernon in December?
How many days does it snow in December in Mount Vernon?
What is the month with the shortest days in Mount Vernon?
How many hours of daylight does Mount Vernon have in December?
What time are sunrise and sunset in December in Mount Vernon?
How long on average sun shines in December in Mount Vernon?
When is the lowest UV index in Mount Vernon?
What is the UV index reading in December in Mount Vernon?
Average temperature in December
Mount Vernon, AR
- Average high temperature in December: 49.6°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (46.9°F).
- Average low temperature in December: 35.8°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (32.2°F).
Average pressure in December
Mount Vernon, 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 (29.94"Hg).
Average wind speed in December
Mount Vernon, AR
- Average wind speed in December: 6.7mph
The windiest months (with the highest average wind speed) are March and April (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Mount Vernon, AR
- Average humidity in December: 77%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Mount Vernon, AR
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in December
Mount Vernon, AR
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is October (7.2 days).
Average snowfall in December
Mount Vernon, AR
- Average snowfall in December: 0.08"
The month with the highest snowfall is March (0.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Mount Vernon, AR
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is January (1.5 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
Mount Vernon, AR
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in December
Mount Vernon, AR
- Average sunshine days in December: 21.1 days
The month with the most sunshine days is October (21.6 days).
The month with the least sunshine days is July (14 days).
Average UV index in December
Mount Vernon, AR
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Mount Vernon, AR
- Average cloud cover in December: 41
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in December
Mount Vernon, AR
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Mount Vernon, Arkansas, USA
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