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
December, with its high-temperature average of 36.9°F (2.7°C) and a low-temperature average of 25.5°F (-3.6°C), is the coldest month.Humidity
In Terrace Heights, the average relative humidity in December is 80%.Rainfall
In December, the rain falls for 9.1 days. Throughout December, 0.83" (21mm) of precipitation is accumulated. In Terrace Heights, Washington, during the entire year, the rain falls for 82.2 days and collects up to 5.43" (138mm) of precipitation.Snowfall
Months with snowfall in Terrace Heights, Washington, are January through March, September, November and December. December is the month with the most snowfall. Snow falls for 5.4 days and accumulates 2.76" (70mm) of snow.Daylight
With an average of 8h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:26 am and sunset at 4:15 pm. On the last day of December, sunrise is at 7:45 am and sunset at 4:24 pm PST.
Sunshine
The average sunshine in December in Terrace Heights is 5.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Terrace Heights. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In December, an average UV index of 2 transforms into the following instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. It's recommended to limit sun exposure when its radiation is at its peak during midday. During bright days, sunglasses that offer UVA and UVB defense are recommended. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
What are the coldest months in Terrace Heights?
How cold is December in Terrace Heights?
What is the average humidity in December in Terrace Heights?
How many days does it rain in December in Terrace Heights?
What is the snowiest month in Terrace Heights?
How many days does it snow in December in Terrace Heights?
What is the month with the shortest days in Terrace Heights?
How many hours of daylight does Terrace Heights have in December?
When is the sunrise / sunset in December in Terrace Heights?
How long on average sun shines in December in Terrace Heights?
When is the lowest UV index in Terrace Heights?
How high is the UV index in December in Terrace Heights?
Average temperature in December
Terrace Heights, WA
- Average high temperature in December: 36.9°F
The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is December (36.9°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (25.5°F).
Average pressure in December
Terrace Heights, WA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in December
Terrace Heights, WA
- Average wind speed in December: 4.4mph
The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest month (with the lowest average wind speed) is December (4.4mph).
Average humidity in December
Terrace Heights, WA
- Average humidity in December: 80%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (39%).
Average rainfall in December
Terrace Heights, WA
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is January (0.87").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in December
Terrace Heights, WA
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is August (2 days).
Average snowfall in December
Terrace Heights, WA
- Average snowfall in December: 2.76"
The month with the highest snowfall is December (2.76").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in December
Terrace Heights, WA
- Average snowfall days in December: 5.4 days
The month with the highest number of snowfall days is December (5.4 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Terrace Heights, WA
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 5h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in December
Terrace Heights, WA
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is July (27.5 days).
The month with the least sunshine days is February (15.8 days).
Average UV index in December
Terrace Heights, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Terrace Heights, WA
- Average cloud cover in December: 37
The month with the most cloud cover is January (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in December
Terrace Heights, WA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Terrace Heights, Washington, USA
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