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
In Summit Hill, the average high-temperature in December drops from a frosty 47.3°F (8.5°C) in November to a cold 38.1°F (3.4°C). An average low-temperature of 27.3°F (-2.6°C) marks the month of December.Humidity
The months with the highest humidity in Summit Hill, Pennsylvania, are February and December, with an average relative humidity of 83%.Rainfall
In Summit Hill, during December, the rain falls for 12.2 days and regularly aggregates up to 2.87" (73mm) of precipitation. In Summit Hill, during the entire year, the rain falls for 167.5 days and collects up to 33.66" (855mm) of precipitation.Snowfall
Months with snowfall in Summit Hill are January through May, October through December. In Summit Hill, Pennsylvania, in December, during 8.7 snowfall days, 4.06" (103mm) of snow is typically accumulated. In Summit Hill, Pennsylvania, during the entire year, snow falls for 49.4 days and aggregates up to 27.56" (700mm) of snow.Daylight
December has the shortest days of the year in Summit Hill, with an average of 9h and 18min of daylight.On the first day of December in Summit Hill, Pennsylvania, sunrise is at 7:09 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:45 pm EST.
Sunshine
In Summit Hill, Pennsylvania, the average sunshine in December is 4.4h.UV index
January through March, 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 minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
How cold is it in Summit Hill in December?
What are the most humid months in Summit Hill?
What is the average humidity in December in Summit Hill?
How many days does it rain in December in Summit Hill?
How much does it snow in Summit Hill in December?
What is the month with the shortest days in Summit Hill?
What is the average length of the day in December in Summit Hill?
What time are sunrise and sunset in December in Summit Hill?
How many hours of sunshine does Summit Hill have in December?
When is the lowest UV index in Summit Hill?
What is the UV index reading in December in Summit Hill?
Average temperature in December
Summit Hill, PA
- Average high temperature in December: 38.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in December: 27.3°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in December
Summit Hill, PA
- Average pressure in December: 30.09"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
Summit Hill, PA
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Summit Hill, PA
- Average humidity in December: 83%
The months with the highest relative humidity are February and December (83%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Summit Hill, PA
- Average rainfall in December: 2.87"
The wettest months (with the highest rainfall) are May, July and August (3.19").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
Summit Hill, PA
- Average rainfall days in December: 12.2 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (9.6 days).
Average snowfall in December
Summit Hill, PA
- Average snowfall in December: 4.06"
The month with the highest snowfall is January (6.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Summit Hill, PA
- Average snowfall days in December: 8.7 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Summit Hill, 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: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Summit Hill, PA
- Average sunshine days in December: 14 days
The month with the most sunshine days is November (15.7 days).
The month with the least sunshine days is May (9.7 days).
Average UV index in December
Summit Hill, PA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Summit Hill, PA
- Average cloud cover in December: 54
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Summit Hill, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Summit Hill, Pennsylvania, USA
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