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 53F and high of 75F. On average, Sumas gets about 1.82 inches of precipitation in July. Most residents are home owners (63%), have a high school diploma (57%) and are single, no kids (33%).
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