Waitsburg was first settled in 1859 by Robert Kennedy. The town name commemorates Sylvester M. Wait, who established a mill there in 1864.
Waitsburg was officially incorporated November 25, 1881.
Waitsburg is located at 46°16′N 118°9′W (46.2681, -118.1543).
According to the United States Census Bureau, the city has a total area of 1.12 square miles, all of it land.
The climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 30's.
The warmest month of the year is July with an average maximum temperature of 86.60 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 26.20 degrees Fahrenheit.
Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 31 degrees Fahrenheit, and fairly limited during winter with an average difference of 15 degrees Fahrenheit.
The annual average precipitation at Waitsburg is 19.55 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is November with an average rainfall of 2.67 Inches.
Waitsburg has a unique city classification in the State of Washington. It is the only city which still operates under its territorial charter.