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
Pasco records the coldest temperatures in December, averaging a high of 37.8°F (3.2°C) and a low of 27.7°F (-2.4°C).Humidity
The average relative humidity in December is 78%.Rainfall
In Pasco, in December, during 10.8 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Pasco, during the entire year, the rain falls for 101.7 days and collects up to 7.36" (187mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Pasco, during December, snow falls for 3.2 days and regularly aggregates up to 0.91" (23mm) of snow. In Pasco, during the entire year, snow falls for 11 days and aggregates up to 4.53" (115mm) of snow.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:19 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:20 pm PST.
Sunshine
The average sunshine in December in Pasco is 5.5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is December in Pasco?
What is the average humidity in December?
How many days 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 in Pasco?
What time are sunrise and sunset in December?
How many hours of sunshine does Pasco have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Pasco, WA
- Average high temperature in December: 37.8°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is December (37.8°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is December (27.7°F).
Average pressure in December
Pasco, WA
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in December
Pasco, WA
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (8.4mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).
Average humidity in December
Pasco, WA
- Average humidity in December: 78%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is July (35%).
Average rainfall in December
Pasco, WA
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is January (0.94").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in December
Pasco, WA
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in December
Pasco, WA
- Average snowfall in December: 0.91"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Pasco, WA
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Pasco, WA
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in December
Pasco, WA
- Average sunshine days in December: 17.2 days
The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is February (14.7 days).
Average UV index in December
Pasco, 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
Pasco, WA
- Average cloud cover in December: 43
The month with the most cloud cover is January (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in December
Pasco, WA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Pasco, Washington, USA
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