December weather forecastPatterson Heights, PA
December
Weather in December
The first month of the winter, December, is also a wintry month in Patterson Heights, Pennsylvania, with an average temperature ranging between min 27.5°F (-2.5°C) and max 38.5°F (3.6°C).Temperature
December ushers in a slight temperature change, with average high-temperatures reducing from November's frosty 48.6°F (9.2°C) to a cold 38.5°F (3.6°C). Patterson Heights's nights in December cool down to an average low-temperature of 27.5°F (-2.5°C).Humidity
In Patterson Heights, the average relative humidity in December is 85%.Rainfall
In Patterson Heights, in December, it is raining for 11.5 days, with typically 1.57" (40mm) of accumulated precipitation. In Patterson Heights, during the entire year, the rain falls for 168.7 days and collects up to 21.22" (539mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Patterson Heights. In December, in Patterson Heights, it is snowing for 12 days. Throughout December, 2.44" (62mm) of snow is accumulated. In Patterson Heights, during the entire year, snow falls for 60.6 days and aggregates up to 11.93" (303mm) 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 December, sunrise is at 7:26 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 5:04 pm EST.
Sunshine
In December, the average sunshine is 3.3h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 1 during December translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Patterson Heights, PA
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Patterson Heights, 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
Patterson Heights, PA
- Average wind speed in December: 7.4mph
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 (4.8mph).
Average humidity in December
Patterson Heights, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in December
Patterson Heights, PA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is November (1.1").
Average rainfall days in December
Patterson Heights, PA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (10 days).
Average snowfall in December
Patterson Heights, PA
- Average snowfall in December: 2.44"
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Patterson Heights, PA
- Average snowfall days in December: 12 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Patterson Heights, PA
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Patterson Heights, PA
- Average sunshine days in December: 10.6 days
The month with the most sunshine days is November (15.1 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in December
Patterson Heights, 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
Patterson Heights, PA
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Patterson Heights, 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).
