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
As December begins, there is a decrease in the average high-temperature, falling from a cool 51.1°F (10.6°C) in November to a cold 42.1°F (5.6°C). Spring Grove reports a consistent average low-temperature of 30°F (-1.1°C) throughout December nights.Humidity
In December, the average relative humidity in Spring Grove is 79%.Rainfall
In Spring Grove, in December, during 8.1 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, in Spring Grove, there are 124 rainfall days, and 11.85" (301mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In Spring Grove, in December, snow falls for 3.4 days, with typically accumulated 0.55" (14mm) of snow. In Spring Grove, during the entire year, snow falls for 18.1 days and aggregates up to 3.27" (83mm) 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 Spring Grove, sunrise is at 7:10 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:52 pm EST.
Sunshine
The average sunshine in December in Spring Grove is 5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
Is it cold in Spring Grove during December?
What is the average humidity in December in Spring Grove?
How much does it rain in Spring Grove in December?
How much does it snow in Spring Grove in December?
What is the month with the shortest days in Spring Grove?
What is the average length of the day in December in Spring Grove?
When is the sunrise / sunset in December in Spring Grove?
How many hours of sunshine does Spring Grove have in December?
What are the months with the lowest UV index in Spring Grove?
How high is the UV index in December in Spring Grove?
Average temperature in December
Spring Grove, PA
- Average high temperature in December: 42.1°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
Spring Grove, 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 (29.94"Hg).
Average wind speed in December
Spring Grove, PA
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Spring Grove, PA
- Average humidity in December: 79%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Spring Grove, PA
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is May (1.38").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in December
Spring Grove, PA
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in December
Spring Grove, PA
- Average snowfall in December: 0.55"
The month with the highest snowfall is January (1.02").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Spring Grove, PA
- Average snowfall days in December: 3.4 days
The month with the highest number of snowfall days is January (5.8 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
Spring Grove, 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: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Spring Grove, PA
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is May (13.2 days).
Average UV index in December
Spring Grove, 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, November and December (UV index 2).
Average cloud cover in December
Spring Grove, PA
- Average cloud cover in December: 47
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Spring Grove, 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).
Spring Grove, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location
