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
Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a frosty 48.4°F (9.1°C) to an icy 38.7°F (3.7°C). An average low-temperature of 27.3°F (-2.6°C) is noted during the nights in December in Apollo, Pennsylvania.Humidity
In Apollo, the average relative humidity in December is 84%.Rainfall
In Apollo, Pennsylvania, during December, the rain falls for 10.1 days and regularly aggregates up to 1.38" (35mm) of precipitation. In Apollo, during the entire year, the rain falls for 147.1 days and collects up to 18.54" (471mm) of precipitation.Snowfall
Months with snowfall in Apollo are January through May, October through December. In Apollo, in December, during 9.1 snowfall days, 2.2" (56mm) of snow is typically accumulated. Throughout the year, in Apollo, Pennsylvania, there are 45.9 snowfall days, and 11.3" (287mm) 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 December, sunrise is at 7:23 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:01 pm EST.
Sunshine
The average sunshine in December is 3.1h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
How cold is it in Apollo in December?
What is the average humidity in December in Apollo?
How much does it rain in Apollo in December?
How many days does it snow in December in Apollo?
What is the month with the shortest days in Apollo?
What is the average length of the day in December in Apollo?
What time are sunrise and sunset in December in Apollo?
How long on average sun shines in December in Apollo?
What is the month with the lowest UV index in Apollo?
How high is the UV index in December in Apollo?
Average temperature in December
Apollo, PA
- Average high temperature in December: 38.7°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: 27.3°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Apollo, 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 (29.95"Hg).
Average wind speed in December
Apollo, PA
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Apollo, PA
- Average humidity in December: 84%
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
Apollo, PA
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is November (1.02").
Average rainfall days in December
Apollo, PA
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is May (17.6 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall in December
Apollo, PA
- Average snowfall in December: 2.2"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Apollo, PA
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Apollo, 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 18min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
Apollo, PA
- Average sunshine days in December: 14 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is May (10 days).
Average UV index in December
Apollo, 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
Apollo, PA
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Apollo, PA
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Apollo, Pennsylvania, USA
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