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
Milroy's December weather features a mild decline in high-temperatures, reducing from a frosty 47.5°F (8.6°C) in November to an icy 38.1°F (3.4°C). In Milroy, the average temperature during the nights of December drops to a subzero cold 27.1°F (-2.7°C).Humidity
In Milroy, the average relative humidity in December is 82%.Rainfall
In Milroy, Pennsylvania, during December, the rain falls for 8.1 days and regularly aggregates up to 1.18" (30mm) of precipitation. In Milroy, Pennsylvania, during the entire year, the rain falls for 132.8 days and collects up to 17.36" (441mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Milroy. In Milroy, Pennsylvania, in December, during 4.8 snowfall days, 1.61" (41mm) of snow is typically accumulated. Throughout the year, there are 28.7 snowfall days, and 9.76" (248mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Milroy.On the first day of December in Milroy, sunrise is at 7:15 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:53 pm EST.
Sunshine
In December, the average sunshine in Milroy is 4.1h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Milroy. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 2 during December leads to these advisories:
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. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
Is December cold in Milroy?
What is the average humidity in December in Milroy?
How much does it rain in Milroy in December?
How much does it snow in Milroy in December?
What is the month with the shortest days in Milroy?
What is the average length of the day in December in Milroy?
What time are sunrise and sunset in December in Milroy?
How many hours of sunshine does Milroy have in December?
What is the month with the lowest UV index in Milroy?
How high is the UV index in December in Milroy?
Average temperature in December
Milroy, PA
- Average high temperature in December: 38.1°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in December: 27.1°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Milroy, 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
Milroy, PA
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Milroy, PA
- Average humidity in December: 82%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is July (76%).
Average rainfall in December
Milroy, PA
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in December
Milroy, PA
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (6 days).
Average snowfall in December
Milroy, PA
- Average snowfall in December: 1.61"
The months with the highest snowfall are January and February (2.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Milroy, PA
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Milroy, 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: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Milroy, PA
- Average sunshine days in December: 20.3 days
The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in December
Milroy, PA
- Average UV index in December: 2
The month with the highest UV index is June (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
Milroy, PA
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Milroy, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Milroy, Pennsylvania, USA
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