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 shift to December brings a decrease in the average high-temperature, falling from a chilly 45.5°F (7.5°C) in November to an icy 36.3°F (2.4°C). Lake Harmony registers a consistent average low-temperature of 25.5°F (-3.6°C) during December.Humidity
February and December, with an average relative humidity of 84%, are the most humid months in Lake Harmony, Pennsylvania.Rainfall
In Lake Harmony, Pennsylvania, during December, the rain falls for 12.5 days and regularly aggregates up to 3.15" (80mm) of precipitation. In Lake Harmony, during the entire year, the rain falls for 173.5 days and collects up to 36.57" (929mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Lake Harmony, Pennsylvania. In Lake Harmony, in December, snow falls for 12.3 days, with typically accumulated 6.89" (175mm) of snow. In Lake Harmony, Pennsylvania, during the entire year, snow falls for 62.9 days and aggregates up to 38.11" (968mm) of snow.Daylight
December has the shortest days of the year in Lake Harmony, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:08 am and sunset at 4:34 pm. On the last day of December, in Lake Harmony, sunrise is at 7:27 am and sunset at 4:44 pm EST.
Sunshine
In December, the average sunshine in Lake Harmony is 3.9h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 1 in December leads to these guidelines:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
How cold is it in Lake Harmony in December?
What is the most humid month in Lake Harmony?
What is the average humidity in December in Lake Harmony?
How much does it rain in Lake Harmony in December?
How many days does it snow in December in Lake Harmony?
What is the month with the shortest days in Lake Harmony?
How many hours of daylight does Lake Harmony have in December?
When are sunrise and sunset in December in Lake Harmony?
How long on average sun shines in December in Lake Harmony?
What is the month with the lowest UV index in Lake Harmony?
How high is the UV index in December in Lake Harmony?
Average temperature in December
Lake Harmony, PA
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in December
Lake Harmony, PA
- Average pressure in December: 30.09"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
Lake Harmony, PA
- Average wind speed in December: 8mph
The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Lake Harmony, PA
- Average humidity in December: 84%
The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (78%).
Average rainfall in December
Lake Harmony, PA
- Average rainfall in December: 3.15"
The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
Lake Harmony, PA
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (9.2 days).
Average snowfall in December
Lake Harmony, PA
- Average snowfall in December: 6.89"
The month with the highest snowfall is January (9.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lake Harmony, PA
- Average snowfall days in December: 12.3 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lake Harmony, PA
- Average daylight in December: 9h and 2min
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: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in December
Lake Harmony, PA
- Average sunshine days in December: 12.4 days
The month with the most sunshine days is September (14.8 days).
The month with the least sunshine days is February (9.4 days).
Average UV index in December
Lake Harmony, 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
Lake Harmony, PA
- Average cloud cover in December: 60
The months with the most cloud cover are February and December (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Lake Harmony, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Lake Harmony, Pennsylvania, USA
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