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 start of December involves a temperature drop, moving from a frosty 46.6°F (8.1°C) in November to an icy 36.9°F (2.7°C). Throughout December, an average low-temperature of 26.2°F (-3.2°C) is expected.Humidity
In Seward, the average relative humidity in December is 85%.Rainfall
In Seward, during December, the rain falls for 10.9 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, there are 183.9 rainfall days, and 33.03" (839mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Seward, in December, snow falls for 12.1 days, with typically accumulated 5.55" (141mm) of snow. Throughout the year, there are 63.4 snowfall days, and 29.65" (753mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Seward.On the first day of December in Seward, sunrise is at 7:20 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:59 pm EST.
Sunshine
The average sunshine in December is 3.4h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Seward. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 1 in December leads to these recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Frequently asked questions
How cold is it in Seward in December?
What is the average humidity in December in Seward?
How many days does it rain in December in Seward?
How many days does it snow in December in Seward?
What is the month with the shortest days in Seward?
How many hours of daylight does Seward have in December?
What time are sunrise and sunset in December in Seward?
How long on average sun shines in December in Seward?
What is the month with the lowest UV index in Seward?
What is the UV index reading in December in Seward?
Average temperature in December
Seward, PA
- Average high temperature in December: 36.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in December: 26.2°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Seward, 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
Seward, 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
Seward, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is July (78%).
Average rainfall in December
Seward, PA
- Average rainfall in December: 2.83"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is November (1.89").
Average rainfall days in December
Seward, PA
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is May (21.4 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in December
Seward, PA
- Average snowfall in December: 5.55"
The month with the highest snowfall is January (7.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Seward, PA
- Average snowfall days in December: 12.1 days
The month with the highest number of snowfall days is January (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Seward, 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 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Seward, PA
- Average sunshine days in December: 10.1 days
The month with the most sunshine days is November (13.2 days).
The month with the least sunshine days is February (7.4 days).
Average UV index in December
Seward, 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
Seward, PA
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in December
Seward, 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).
Seward, Pennsylvania, USA
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