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
Terrace's progression into December includes a drop in the average high-temperature, from a frosty 49.3°F (9.6°C) in November to an icy 39.6°F (4.2°C). Throughout the month of December, Terrace witnesses an average temperature of 28.4°F (-2°C).Humidity
In December, the average relative humidity is 83%.Rainfall
In Terrace, in December, it is raining for 8.5 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, there are 128 rainfall days, and 10.2" (259mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Terrace, in December, during 10.1 snowfall days, 1.26" (32mm) of snow is typically accumulated. In Terrace, during the entire year, snow falls for 50 days and aggregates up to 6.69" (170mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:23 am and sunset at 4:53 pm. On the last day of December, sunrise is at 7:42 am and sunset at 5:03 pm EST.
Sunshine
The average sunshine in December in Terrace is 3.4h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 1 during December leads to these advisories:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December in Terrace?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Terrace have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Terrace, PA
- Average high temperature in December: 39.6°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 (33.4°F).
- Average low temperature in December: 28.4°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Terrace, PA
- Average pressure in December: 30.11"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
Terrace, PA
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Terrace, PA
- Average humidity in December: 83%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Terrace, PA
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is May (1.26").
The driest months (with the least rainfall) are September and November (0.55").
Average rainfall days in December
Terrace, PA
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in December
Terrace, PA
- Average snowfall in December: 1.26"
The months with the highest snowfall are January and February (1.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Terrace, PA
- Average snowfall days in December: 10.1 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Terrace, 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 month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Terrace, PA
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Terrace, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Terrace, PA
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Terrace, PA
- Average visibility in December: 5mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
Terrace, Pennsylvania, USA
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