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
With December's arrival, Ellisville's weather changes as the average high-temperature falls from a fresh 53.8°F (12.1°C) in November to a chilly 43.3°F (6.3°C). During December, Ellisville's temperature falls to a steady low-temperature average of 30.2°F (-1°C).Humidity
In December, the average relative humidity is 76%.Rainfall
In December, in Ellisville, the rain falls for 6.1 days. Throughout December, 1.42" (36mm) of precipitation is accumulated. Throughout the year, there are 134.1 rainfall days, and 23.82" (605mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. The month with the most snowfall is December, when snow falls for 4.1 days and typically aggregates up to 1.3" (33mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:51 pm CST.
Sunshine
The average sunshine in December is 4.8h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Ellisville. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Enhance your sun protection with tightly woven, yet airy clothing. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Ellisville during December?
What is the average humidity in December in Ellisville?
How much does it rain in Ellisville in December?
When does it snow the most in Ellisville?
How much does it snow in Ellisville in December?
What is the month with the shortest days in Ellisville?
How many hours of daylight does Ellisville have in December?
When is the sunrise / sunset in December in Ellisville?
How many hours of sunshine does Ellisville have in December?
What are the months with the lowest UV index in Ellisville?
What is the UV index reading in December in Ellisville?
Average temperature in December
Ellisville, MO
- Average high temperature in December: 43.3°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (38.5°F).
- Average low temperature in December: 30.2°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in December
Ellisville, MO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Ellisville, MO
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Ellisville, 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 (71%).
Average rainfall in December
Ellisville, MO
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is February (1.1").
Average rainfall days in December
Ellisville, MO
- Average rainfall days in December: 6.1 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is December (6.1 days).
Average snowfall in December
Ellisville, MO
- Average snowfall in December: 1.3"
The month with the highest snowfall is December (1.3").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Ellisville, MO
- Average snowfall days in December: 4.1 days
The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Ellisville, MO
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- 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 36min).
Average sunshine days in December
Ellisville, MO
- Average sunshine days in December: 20.3 days
The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is May (12.6 days).
Average UV index in December
Ellisville, MO
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Ellisville, 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 June, July and August (Cloud cover 29).
Average visibility in December
Ellisville, 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).
Ellisville, Missouri, USA
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