December weather forecastRayville, MO
December
Weather in December
The first month of the winter, December, is also an icy month in Rayville, Missouri, with an average temperature varying between 26.8°F (-2.9°C) and 40.1°F (4.5°C).Temperature
With the onset of December, Rayville experiences a modest temperature adjustment, with the average high-temperature receding from a fresh 52°F (11.1°C) in November to a wintry 40.1°F (4.5°C). Throughout December, an average low-temperature of 26.8°F (-2.9°C) is experienced in Rayville.Humidity
The average relative humidity in December is 76%.Rainfall
In December, in Rayville, the rain falls for 5.5 days. Throughout December, 1.54" (39mm) of precipitation is accumulated. Throughout the year, there are 137 rainfall days, and 27.52" (699mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Rayville. In December, it is snowing for 3.9 days. Throughout December, 1.14" (29mm) of snow is accumulated. Throughout the year, there are 18.1 snowfall days, and 9.13" (232mm) of snow is accumulated.Daylight
December has the shortest days of the year in Rayville, Missouri, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:17 am and sunset at 4:53 pm. On the last day of December, in Rayville, sunrise is at 7:36 am and sunset at 5:03 pm CST.
Sunshine
In Rayville, the average sunshine in December is 5.2h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The UV index of 2 during December translates into the following guidance:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rayville, MO
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in December: 26.8°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in December
Rayville, MO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Rayville, MO
- Average wind speed in December: 9mph
The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Rayville, MO
- Average humidity in December: 76%
The months with the highest relative humidity are May and June (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Rayville, MO
- Average rainfall in December: 1.54"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in December
Rayville, MO
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in December
Rayville, MO
- Average snowfall in December: 1.14"
The month with the highest snowfall is February (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rayville, MO
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rayville, MO
- Average daylight in December: 9h and 30min
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 30min).
- Average sunshine in December: 5h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Rayville, MO
- Average sunshine days in December: 21.5 days
The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in December
Rayville, 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
Rayville, MO
- Average cloud cover in December: 43
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Rayville, 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).
