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 transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a chilly 47.8°F (8.8°C) in November to a wintry 38.3°F (3.5°C). Butler records an average low of 27.1°F (-2.7°C) throughout the nights in December.Humidity
In December, the average relative humidity is 85%.Rainfall
In December, in Butler, Pennsylvania, the rain falls for 10.2 days. Throughout December, 1.93" (49mm) of precipitation is accumulated. In Butler, during the entire year, the rain falls for 162.5 days and collects up to 26.02" (661mm) of precipitation.Snowfall
Months with snowfall in Butler are January through May, October through December. In December, it is snowing for 12.6 days. Throughout December, 2.44" (62mm) of snow is accumulated. In Butler, during the entire year, snow falls for 58.1 days and aggregates up to 14.41" (366mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:25 am and sunset at 4:52 pm. On the last day of December, in Butler, sunrise is at 7:43 am and sunset at 5:01 pm EST.
Sunshine
In December, the average sunshine is 3h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The UV index of 1 during December leads to these advisories:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
Is it cold in Butler during December?
What is the average humidity in December in Butler?
How much does it rain in Butler in December?
How many days does it snow in December in Butler?
What is the month with the shortest days in Butler?
How many hours of daylight does Butler have in December?
What time are sunrise and sunset in December in Butler?
How long on average sun shines in December in Butler?
What is the month with the lowest UV index in Butler?
What is the UV index intensity in December in Butler?
Average temperature in December
Butler, PA
- Average high temperature in December: 38.3°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.1°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Butler, 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 (29.94"Hg).
Average wind speed in December
Butler, PA
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in December
Butler, 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
Butler, PA
- Average rainfall in December: 1.93"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is November (1.61").
Average rainfall days in December
Butler, PA
- Average rainfall days in December: 10.2 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in December
Butler, PA
- Average snowfall in December: 2.44"
The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Butler, PA
- Average snowfall days in December: 12.6 days
The month with the highest number of snowfall days is January (17 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Butler, 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 0min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Butler, PA
- Average sunshine days in December: 10.8 days
The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is February (9 days).
Average UV index in December
Butler, PA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Butler, 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
Butler, 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).
Butler, Pennsylvania, USA
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