December weather forecastHawthorn, PA
December
Weather in December
The first month of the winter, December, is also an icy month in Hawthorn, Pennsylvania, with an average temperature fluctuating between 25.5°F (-3.6°C) and 36.5°F (2.5°C).Temperature
In the transition to December, Hawthorn observes a drop in the average high-temperature, moving from a frosty 45.7°F (7.6°C) in November to an icy 36.5°F (2.5°C). In Hawthorn, the nighttime temperature averages to a freezing cold 25.5°F (-3.6°C) during December.Humidity
The average relative humidity in December is 86%.Rainfall
In Hawthorn, in December, during 10.2 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. Throughout the year, there are 150.5 rainfall days, and 22.05" (560mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Hawthorn, during December, snow falls for 13.5 days and regularly aggregates up to 3.74" (95mm) of snow. Throughout the year, there are 72.4 snowfall days, and 22.28" (566mm) of snow is accumulated.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 7:23 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:41 am and sunset at 4:58 pm EST.
Sunshine
The average sunshine in December is 2.7h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Stay sun-safe with clothing that is both closely woven and worn loosely. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hawthorn, PA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in December
Hawthorn, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Hawthorn, PA
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Hawthorn, PA
- Average humidity in December: 86%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).
Average rainfall in December
Hawthorn, PA
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is April (2.56").
The driest month (with the least rainfall) is November (1.26").
Average rainfall days in December
Hawthorn, PA
- Average rainfall days in December: 10.2 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in December
Hawthorn, PA
- Average snowfall in December: 3.74"
The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hawthorn, PA
- Average snowfall days in December: 13.5 days
The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hawthorn, PA
- Average daylight in December: 9h and 18min
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: 2h and 42min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in December
Hawthorn, PA
- Average sunshine days in December: 11.4 days
The month with the most sunshine days is November (15.3 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in December
Hawthorn, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Hawthorn, PA
- Average cloud cover in December: 72
The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in December
Hawthorn, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is February (4mi).
