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
Jacksonville's December weather features a mild decline in high-temperatures, reducing from a fresh 51.8°F (11°C) in November to a cold 39.9°F (4.4°C). December nights in Jacksonville are marked by an average temperature drop to a subzero cold 27.3°F (-2.6°C).Humidity
In Jacksonville, the average relative humidity in December is 77%.Rainfall
In Jacksonville, in December, during 6.3 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 136.6 rainfall days, and 27.44" (697mm) of precipitation is accumulated.Snowfall
January through April, September through December are months with snowfall. In Jacksonville, Missouri, in December, snow falls for 3.8 days, with typically accumulated 1.38" (35mm) of snow. Throughout the year, in Jacksonville, there are 21.5 snowfall days, and 10.94" (278mm) of snow is accumulated.Daylight
December has the shortest days of the year in Jacksonville, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:12 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:56 pm CST.
Sunshine
The average sunshine in December is 5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Jacksonville, Missouri. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 2 in December interprets into the following advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Jacksonville in December?
What is the average humidity in December in Jacksonville?
How much does it rain in Jacksonville in December?
How much does it snow in Jacksonville in December?
What is the month with the shortest days in Jacksonville?
What is the average length of the day in December in Jacksonville?
When is the sunrise / sunset in December in Jacksonville?
How long on average sun shines in December in Jacksonville?
What is the month with the lowest UV index in Jacksonville?
How high is the UV index in December in Jacksonville?
Average temperature in December
Jacksonville, MO
- Average high temperature in December: 39.9°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 27.3°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in December
Jacksonville, 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 (29.91"Hg).
Average wind speed in December
Jacksonville, MO
- Average wind speed in December: 9.6mph
The windiest months (with the highest average wind speed) are January, February and March (10mph).
The calmest months (with the lowest average wind speed) are July and August (6.4mph).
Average humidity in December
Jacksonville, MO
- Average humidity in December: 77%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Jacksonville, MO
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in December
Jacksonville, MO
- Average rainfall days in December: 6.3 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
Jacksonville, MO
- Average snowfall in December: 1.38"
The month with the highest snowfall is January (3.7").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in December
Jacksonville, MO
- Average snowfall days in December: 3.8 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Jacksonville, 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: 5h and 0min
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
Jacksonville, MO
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in December
Jacksonville, 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
Jacksonville, MO
- Average cloud cover in December: 47
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Jacksonville, 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).
Jacksonville, Missouri, USA
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