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 shift from November to December involves a decrease in the average high-temperature, from a fresh 52.2°F (11.2°C) to a cold 42.6°F (5.9°C). December nights in Petra observe an average temperature dip to a freezing cold 31.3°F (-0.4°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 81%.Rainfall
In Petra, during December, the rain falls for 11.4 days and regularly aggregates up to 2.13" (54mm) of precipitation. Throughout the year, there are 156.2 rainfall days, and 26.1" (663mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In December, it is snowing for 7.7 days. Throughout December, 1.14" (29mm) of snow is accumulated. In Petra, during the entire year, snow falls for 32.5 days and aggregates up to 7.4" (188mm) 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 December, sunrise is at 7:36 am and sunset at 5:15 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 5:25 pm EST.
Sunshine
The average sunshine in December is 4.2h.UV index
January, February, November 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 low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December in Petra?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Petra, KY
- Average high temperature in December: 42.6°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 (37.4°F).
- Average low temperature in December: 31.3°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in December
Petra, KY
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Petra, KY
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in December
Petra, KY
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Petra, KY
- Average rainfall in December: 2.13"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in December
Petra, KY
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is November (9.8 days).
Average snowfall in December
Petra, KY
- Average snowfall in December: 1.14"
The month with the highest snowfall is January (1.89").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Petra, KY
- Average snowfall days in December: 7.7 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Petra, KY
- 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Petra, KY
- Average sunshine days in December: 13.2 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in December
Petra, KY
- 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
Petra, KY
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Petra, KY
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are February, May and July (5mi).
Petra, Kentucky, USA
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