![]() ![]() Note: The daily maximum UV index of 1 in December interpret into the following advice: A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person. UV index February and December, with an average maximum UV index of 1, are months with the lowest UV index in Spokane. Sunshine With an average of 3.9h of sunshine, December has the least sunshine of the year. On the last day of December, in Spokane, sunrise is at 7:37 am and sunset at 4:07 pm PST. On the first day of the month, sunrise is at 7:17 am and sunset at 4:00 pm. DaylightWith an average of 8h and 30min of daylight, December has the shortest days of the year in Spokane. Throughout the year, there are 62.3 snowfall days, and 37.83" (961mm) of snow is accumulated. In Spokane, Washington, during December, snow falls for 15.6 days and regularly aggregates up to 8.74" (222mm) of snow. Snowfall January through May, September through December are months with snowfall in Spokane. ![]() Throughout the year, in Spokane, there are 127.8 rainfall days, and 16.93" (430mm) of precipitation is accumulated. Rainfall In Spokane, Washington, during 9.6 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. HumidityIn December, the average relative humidity in Spokane is 86%. TemperatureThe coldest month is December, with an average high-temperature of 32.2☏ (0.1☌) and an average low-temperature of 22.1☏ (-5.5☌). December, the first month of the winter in Spokane, is still a cold month, with temperature in the range of an average low of 22.1☏ (-5.5☌) and an average high of 32.2☏ (0.1☌).
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