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, on average, is the coldest month, registering a high temperature of 42.3°F (5.7°C) and a low of 32.7°F (0.4°C).Humidity
The months with the highest humidity are January, February, November and December, with an average relative humidity of 88%.Rainfall
In Kelso, during December, the rain falls for 18.5 days and regularly aggregates up to 3.58" (91mm) of precipitation. Throughout the year, in Kelso, there are 175.5 rainfall days, and 25.83" (656mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Kelso, during December, snow falls for 0.9 days and regularly aggregates up to 0.24" (6mm) of snow. In Kelso, Washington, during the entire year, snow falls for 6.7 days and aggregates up to 3.54" (90mm) of snow.Daylight
The month with the shortest days in Kelso is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:34 am and sunset at 4:27 pm. On the last day of December, in Kelso, sunrise is at 7:53 am and sunset at 4:36 pm PST.
Sunshine
The months with the least sunshine in Kelso are January, February and December, with an average of 3.5h of sunshine.UV index
In December, the average daily maximum UV index in Kelso, Washington, is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
What are the coldest months in Kelso?
Is it cold in Kelso during December?
What are the most humid months in Kelso?
What is the average humidity in December in Kelso?
How many days does it rain in December in Kelso?
How many days does it snow in December in Kelso?
What is the month with the shortest days in Kelso?
How many hours of daylight does Kelso have in December?
When are sunrise and sunset in December in Kelso?
What is the month with the least sunshine in Kelso?
How many hours of sunshine does Kelso have in December?
What is the UV index reading in December in Kelso?
Average temperature in December
Kelso, WA
- Average high temperature in December: 42.3°F
The warmest month (with the highest average high temperature) is August (77.9°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).
Average pressure in December
Kelso, WA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in December
Kelso, 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 September (3.9mph).
Average humidity in December
Kelso, WA
- Average humidity in December: 88%
The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is July (72%).
Average rainfall in December
Kelso, WA
- Average rainfall in December: 3.58"
The wettest month (with the highest rainfall) is January (3.9").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in December
Kelso, WA
- Average rainfall days in December: 18.5 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is July (6.1 days).
Average snowfall in December
Kelso, WA
- Average snowfall in December: 0.24"
The month with the highest snowfall is January (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Kelso, WA
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is February (2.2 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
Kelso, 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: 3h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 30min).
Average sunshine days in December
Kelso, WA
- Average sunshine days in December: 10.2 days
The month with the most sunshine days is July (22 days).
The month with the least sunshine days is March (8.9 days).
Average UV index in December
Kelso, WA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in December
Kelso, WA
- Average cloud cover in December: 64
The months with the most cloud cover are February and March (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in December
Kelso, WA
- Average visibility in December: 4mi
The month with the highest visibility is August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (4mi).
Kelso, Washington, USA
Weather forecast for your location
2. Allow the app to use your location
