December weather forecastKalama, WA
December
Weather in December
December, the first month of the winter in Kalama, is still a cold month, with an average temperature fluctuating between 42.1°F (5.6°C) and 32.5°F (0.3°C).Temperature
December, with its average high-temperature of 42.1°F (5.6°C) and an average low-temperature of 32.5°F (0.3°C), holds the record as the coldest month.Humidity
In December, the average relative humidity is 87%.Rainfall
In Kalama, during December, the rain falls for 20 days and regularly aggregates up to 5.91" (150mm) of precipitation. In Kalama, Washington, during the entire year, the rain falls for 190.2 days and collects up to 42.48" (1079mm) of precipitation.Snowfall
Months with snowfall in Kalama are January through March, November and December. In December, in Kalama, Washington, it is snowing for 1.4 days. Throughout December, 0.51" (13mm) of snow is accumulated. In Kalama, during the entire year, snow falls for 9.7 days and aggregates up to 7.28" (185mm) of snow.Daylight
The month with the shortest days in Kalama, Washington, is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:33 am and sunset at 4:27 pm. On the last day of December, in Kalama, sunrise is at 7:53 am and sunset at 4:36 pm PST.
Sunshine
In December, the average sunshine is 3.5h.UV index
The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health hazard 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:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. To avoid the Sun's strongest rays, limit exposure around the mid-day period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Kalama, WA
- Average high temperature in December: 42.1°F
The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is December (42.1°F).
- Average low temperature in December: 32.5°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (32.5°F).
Average pressure in December
Kalama, 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
Kalama, WA
- Average wind speed in December: 4.8mph
The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in December
Kalama, WA
- Average humidity in December: 87%
The months with the highest relative humidity are February and November (88%).
The months with the lowest relative humidity are July and August (72%).
Average rainfall in December
Kalama, WA
- Average rainfall in December: 5.91"
The wettest month (with the highest rainfall) is January (6.34").
The driest month (with the least rainfall) is July (0.55").
Average rainfall days in December
Kalama, WA
- Average rainfall days in December: 20 days
The month with the highest number of rainy days is March (21.6 days).
The month with the least rainy days is July (6.7 days).
Average snowfall in December
Kalama, WA
- Average snowfall in December: 0.51"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Kalama, WA
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is February (3.6 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
Kalama, WA
- Average daylight in December: 8h and 42min
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 30min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 3h and 24min).
Average sunshine days in December
Kalama, WA
- Average sunshine days in December: 8.5 days
The month with the most sunshine days is August (21.3 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in December
Kalama, 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
Kalama, WA
- Average cloud cover in December: 64
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in December
Kalama, WA
- Average visibility in December: 4mi
The months with the highest visibility are July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (4mi).
