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 transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a frosty 46.2°F (7.9°C) in November to a cold 36.5°F (2.5°C). In the month of December, an average of 26.4°F (-3.1°C) marks the low-temperature.Humidity
In Saint Michael, the average relative humidity in December is 85%.Rainfall
In December, the rain falls for 9.2 days. Throughout December, 2.64" (67mm) of precipitation is accumulated. Throughout the year, in Saint Michael, there are 128.8 rainfall days, and 22.95" (583mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Saint Michael, in December, snow falls for 10.3 days, with typically accumulated 5.16" (131mm) of snow. Throughout the year, there are 58.2 snowfall days, and 31.81" (808mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:19 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:37 am and sunset at 4:59 pm EST.
Sunshine
The average sunshine in December is 3.6h.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Enhance your sun protection with tightly woven, yet airy clothing. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Saint Michael have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Saint Michael, PA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Saint Michael, 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
Saint Michael, PA
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Saint Michael, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and July (78%).
Average rainfall in December
Saint Michael, PA
- Average rainfall in December: 2.64"
The wettest month (with the highest rainfall) is February (2.68").
The driest month (with the least rainfall) is August (1.1").
Average rainfall days in December
Saint Michael, PA
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is April (14.6 days).
The month with the least rainy days is November (7 days).
Average snowfall in December
Saint Michael, PA
- Average snowfall in December: 5.16"
The month with the highest snowfall is February (7.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Saint Michael, PA
- Average snowfall days in December: 10.3 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Saint Michael, 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 months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Saint Michael, PA
- Average sunshine days in December: 13.7 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is January (8.3 days).
Average UV index in December
Saint Michael, PA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Saint Michael, 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
Saint Michael, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Saint Michael, Pennsylvania, USA
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