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
With its high average temperature of 39.6°F (4.2°C) and a low of 31.6°F (-0.2°C), December is regarded as the coldest month.Humidity
In December, the average relative humidity is 85%.Rainfall
In Van Zandt, Washington, during December, the rain falls for 19.9 days and regularly aggregates up to 6.3" (160mm) of precipitation. In Van Zandt, during the entire year, the rain falls for 194.7 days and collects up to 48.66" (1236mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Van Zandt, during December, snow falls for 2.5 days and regularly aggregates up to 1.26" (32mm) of snow. Throughout the year, there are 12.8 snowfall days, and 9.45" (240mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 18min of daylight.On the first day of December, sunrise is at 7:41 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 8:01 am and sunset at 4:22 pm PST.
Sunshine
In December, the average sunshine is 4.1h.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Van Zandt have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Van Zandt, WA
- Average high temperature in December: 39.6°F
The warmest month (with the highest average high temperature) is August (73.2°F).
The month with the lowest average high temperature is December (39.6°F).
- Average low temperature in December: 31.6°F
The month with the highest average low temperature is August (51.3°F).
The coldest months (with the lowest average low temperature) are February and December (31.6°F).
Average pressure in December
Van Zandt, WA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March and August (30"Hg).
Average wind speed in December
Van Zandt, WA
- Average wind speed in December: 4.7mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).
Average humidity in December
Van Zandt, WA
- Average humidity in December: 85%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is July (73%).
Average rainfall in December
Van Zandt, WA
- Average rainfall in December: 6.3"
The wettest month (with the highest rainfall) is November (7.32").
The driest month (with the least rainfall) is July (1.02").
Average rainfall days in December
Van Zandt, WA
- Average rainfall days in December: 19.9 days
The month with the highest number of rainy days is March (21.6 days).
The month with the least rainy days is August (8.5 days).
Average snowfall in December
Van Zandt, WA
- Average snowfall in December: 1.26"
The month with the highest snowfall is February (2.99").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Van Zandt, WA
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Van Zandt, WA
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Van Zandt, WA
- Average sunshine days in December: 9.5 days
The months with the most sunshine days are July and August (20 days).
The month with the least sunshine days is March (7.8 days).
Average UV index in December
Van Zandt, WA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Van Zandt, WA
- Average cloud cover in December: 58
The months with the most cloud cover are January, March and December (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in December
Van Zandt, WA
- Average visibility in December: 5mi
The months with the highest visibility are July and August (6mi).
The month with the lowest visibility is January (4mi).
Van Zandt, Washington, USA
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