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 move into December indicates a slight reduction in the average high-temperature, down from November's fresh 51.1°F (10.6°C) to a cold 42.3°F (5.7°C). During the month of December, Phoenixville anticipates a mean low-temperature of 30.9°F (-0.6°C).Humidity
The average relative humidity in December in Phoenixville is 79%.Rainfall
In Phoenixville, during December, the rain falls for 7.9 days and regularly aggregates up to 0.98" (25mm) of precipitation. Throughout the year, there are 132.3 rainfall days, and 13.98" (355mm) of precipitation is accumulated.Snowfall
Months with snowfall in Phoenixville are January through March, November and December. In Phoenixville, in December, snow falls for 2.5 days, with typically accumulated 0.51" (13mm) of snow. In Phoenixville, during the entire year, snow falls for 15.1 days and aggregates up to 2.2" (56mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December in Phoenixville, Pennsylvania, sunrise is at 7:05 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:46 pm EST.
Sunshine
In December, the average sunshine is 4.8h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
Is December cold in Phoenixville?
What is the average humidity in December in Phoenixville?
How much does it rain in Phoenixville in December?
How much does it snow in Phoenixville in December?
What is the month with the shortest days in Phoenixville?
What is the average length of the day in December in Phoenixville?
What time are sunrise and sunset in December in Phoenixville?
How long on average sun shines in December in Phoenixville?
What are the months with the lowest UV index in Phoenixville?
How high is the UV index in December in Phoenixville?
Average temperature in December
Phoenixville, PA
- Average high temperature in December: 42.3°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in December: 30.9°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in December
Phoenixville, 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
Phoenixville, 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 (5.2mph).
Average humidity in December
Phoenixville, PA
- Average humidity in December: 79%
The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in December
Phoenixville, PA
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is August (1.77").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in December
Phoenixville, PA
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in December
Phoenixville, PA
- Average snowfall in December: 0.51"
The months with the highest snowfall are January and February (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Phoenixville, PA
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is February (4.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Phoenixville, PA
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Phoenixville, PA
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in December
Phoenixville, PA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (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
Phoenixville, PA
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Phoenixville, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Phoenixville, Pennsylvania, USA
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