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
Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a frosty 48°F (8.9°C) to an icy 38.5°F (3.6°C). Kittanning's December nights cool down to an average low-temperature of 27.3°F (-2.6°C).Humidity
In December, the average relative humidity is 85%.Rainfall
In Kittanning, Pennsylvania, in December, it is raining for 12.6 days, with typically 2.8" (71mm) of accumulated precipitation. In Kittanning, during the entire year, the rain falls for 182.9 days and collects up to 34.88" (886mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Kittanning, Pennsylvania, during December, snow falls for 13 days and regularly aggregates up to 4.69" (119mm) of snow. Throughout the year, there are 64.2 snowfall days, and 24.25" (616mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:23 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:00 pm EST.
Sunshine
In December, the average sunshine is 3.1h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December in Kittanning?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Kittanning, PA
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.4°F).
- Average low temperature in December: 27.3°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Kittanning, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Kittanning, PA
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Kittanning, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in December
Kittanning, PA
- Average rainfall in December: 2.8"
The wettest month (with the highest rainfall) is May (3.7").
The driest month (with the least rainfall) is November (2.17").
Average rainfall days in December
Kittanning, PA
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in December
Kittanning, PA
- Average snowfall in December: 4.69"
The month with the highest snowfall is January (6.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Kittanning, PA
- Average snowfall days in December: 13 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Kittanning, PA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Kittanning, PA
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is November (14.1 days).
The month with the least sunshine days is February (7 days).
Average UV index in December
Kittanning, PA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Kittanning, PA
- Average cloud cover in December: 68
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Kittanning, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Kittanning, Pennsylvania, USA
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