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
December indicates a minor shift in the average high-temperature, from November's frosty 48.6°F (9.2°C) to an icy 39.6°F (4.2°C). During December, the nighttime temperature averages of 27.5°F (-2.5°C).Humidity
In December, the average relative humidity is 85%.Rainfall
In Chalkhill, during December, the rain falls for 12.4 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, in Chalkhill, there are 189.4 rainfall days, and 32.95" (837mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Chalkhill, in December, snow falls for 8.3 days, with typically accumulated 3.46" (88mm) of snow. In Chalkhill, during the entire year, snow falls for 42 days and aggregates up to 17.68" (449mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Chalkhill.On the first day of December, sunrise is at 7:21 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:03 pm EST.
Sunshine
The average sunshine in December is 3.6h.UV index
December is the month with the lowest UV index in Chalkhill, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 1 during December translates into the following guidance:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Enhance your sun protection with tightly woven, yet airy clothing. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
How cold does it get in Chalkhill in December?
What is the average humidity in December in Chalkhill?
How much does it rain in Chalkhill in December?
How much does it snow in Chalkhill in December?
What is the month with the shortest days in Chalkhill?
What is the average length of the day in December in Chalkhill?
When is the sunrise / sunset in December in Chalkhill?
How long on average sun shines in December in Chalkhill?
What is the month with the lowest UV index in Chalkhill?
What is the UV index intensity in December in Chalkhill?
Average temperature in December
Chalkhill, PA
- Average high temperature in December: 39.6°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in December
Chalkhill, PA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Chalkhill, PA
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Chalkhill, PA
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are June, July and August (78%).
Average rainfall in December
Chalkhill, PA
- Average rainfall in December: 2.83"
The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in December
Chalkhill, PA
- Average rainfall days in December: 12.4 days
The month with the highest number of rainy days is May (21.5 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in December
Chalkhill, PA
- Average snowfall in December: 3.46"
The month with the highest snowfall is January (5.39").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Chalkhill, PA
- Average snowfall days in December: 8.3 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Chalkhill, 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: 3h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in December
Chalkhill, PA
- Average sunshine days in December: 13 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (8 days).
Average UV index in December
Chalkhill, 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
Chalkhill, 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 37).
Average visibility in December
Chalkhill, PA
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is January (4mi).
Chalkhill, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location
