Halloween temperatures in the region have varied widely over the years. The warmest Halloween on record at Seattle-Tacoma International Airport was in 1949, with a high of 71°F, while the coldest was in 2006, when temperatures dropped to a chilly 30°F. Similarly, Olympia experienced its warmest Halloween in 1949 at 74°F and its coldest in 2002 at a frigid 14°F. These extremes highlight the importance of checking the forecast and dressing appropriately for the weather.