December weather forecastHarrah, WA
December
Weather in December
December, the first month of the winter in Harrah, is also a wintry month, with an average temperature ranging between min 25.7°F (-3.5°C) and max 37°F (2.8°C).Temperature
December is the coldest month of the year, registering average temperatures as high as 37°F (2.8°C) and as low as 25.7°F (-3.5°C).Humidity
In December, the average relative humidity in Harrah is 79%.Rainfall
In Harrah, during December, the rain falls for 8.5 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, there are 78.5 rainfall days, and 5.16" (131mm) of precipitation is accumulated.Snowfall
January through March, September, November and December are months with snowfall in Harrah. In Harrah, during December, snow falls for 3.5 days and regularly aggregates up to 1.57" (40mm) of snow. In Harrah, during the entire year, snow falls for 12.8 days and aggregates up to 5.35" (136mm) of snow.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year in Harrah, Washington.On the first day of December, sunrise is at 7:25 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 4:25 pm PST.
Sunshine
The average sunshine in December 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. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 in December translates into these instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Harrah, WA
- Average high temperature in December: 37°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is December (37°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is August (61.2°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in December
Harrah, 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
Harrah, WA
- Average wind speed in December: 4.6mph
The windiest months (with the highest average wind speed) are April and June (7.1mph).
The calmest month (with the lowest average wind speed) is December (4.6mph).
Average humidity in December
Harrah, WA
- Average humidity in December: 79%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (38%).
Average rainfall in December
Harrah, WA
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is January (0.83").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in December
Harrah, WA
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is March (9.8 days).
The month with the least rainy days is July (2.1 days).
Average snowfall in December
Harrah, WA
- Average snowfall in December: 1.57"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in December
Harrah, WA
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Harrah, 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: 5h and 54min
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
Harrah, WA
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is July (27.3 days).
The month with the least sunshine days is February (17.9 days).
Average UV index in December
Harrah, 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
Harrah, WA
- Average cloud cover in December: 37
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in December
Harrah, 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).
