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
Saint Johns observes a minor decrease in the average high-temperature with the arrival of December, falling from November's refreshing 55.6°F (13.1°C) to a frosty 46.2°F (7.9°C). In the month of December, Saint Johns witnesses a consistent average low-temperature of 34.2°F (1.2°C).Humidity
In Saint Johns, Kentucky, the average relative humidity in December is 78%.Rainfall
In December, the rain falls for 9 days. Throughout December, 1.14" (29mm) of precipitation is accumulated. In Saint Johns, during the entire year, the rain falls for 126.4 days and collects up to 16.89" (429mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Saint Johns, in December, snow falls for 1.4 days, with typically accumulated 0.08" (2mm) of snow. Throughout the year, in Saint Johns, there are 8.9 snowfall days, and 1.65" (42mm) of snow is accumulated.Daylight
The month with the shortest days in Saint Johns is December, with an average of 9h and 42min of daylight.On the first day of December in Saint Johns, sunrise is at 6:49 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 4:48 pm CST.
Sunshine
In Saint Johns, Kentucky, the average sunshine in December is 4.9h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 2 in December translates into this advice:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What are the temperatures in Saint Johns in December?
What is the average humidity in December in Saint Johns?
How many days does it rain in December in Saint Johns?
How many days does it snow in December in Saint Johns?
What is the month with the shortest days in Saint Johns?
What is the average length of the day in December in Saint Johns?
When is the sunrise / sunset in December in Saint Johns?
How long on average sun shines in December in Saint Johns?
What is the month with the lowest UV index in Saint Johns?
What is the UV index reading in December in Saint Johns?
Average temperature in December
Saint Johns, KY
- Average high temperature in December: 46.2°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in December: 34.2°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in December
Saint Johns, KY
- 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
Saint Johns, KY
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is April (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in December
Saint Johns, KY
- Average humidity in December: 78%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Saint Johns, KY
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is September (0.63").
Average rainfall days in December
Saint Johns, KY
- Average rainfall days in December: 9 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is October (7.6 days).
Average snowfall in December
Saint Johns, KY
- Average snowfall in December: 0.08"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Saint Johns, KY
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Saint Johns, KY
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 4h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Saint Johns, KY
- Average sunshine days in December: 20 days
The month with the most sunshine days is October (22.3 days).
The month with the least sunshine days is July (14.2 days).
Average UV index in December
Saint Johns, KY
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Saint Johns, KY
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 28).
Average visibility in December
Saint Johns, KY
- 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).
Saint Johns, Kentucky, USA
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