Sumas is located in Whatcom County, Washington. There are roughly 244 residents, living in 88 households. The average temperature for Sumas this time of the year is low of 45F and high of 65F. On average, Sumas gets about 3.27 inches of precipitation in May. Most residents are home owners (63%), have a high school diploma (57%) and are single, no kids (33%).
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