The first weekend of summer broke a nearly 30-year-old record for late June, according to the National Weather Service.
On Saturday, a high of 85 degrees was recorded just after 3 p.m. at Bellingham International Airport, breaking the record high of 83 degrees set in 1989. Normal high temperature for June is 66.7 degrees.
Temperatures are expected to be about the same or possibly warmer Sunday, according to meteorologist Johnny Burg in Seattle. The record high for June 25 also is 83 degrees, set in 2015.
A heat advisory was issued by the National Weather Service through 9 p.m. Sunday.
Despite the heat wave, area rivers are still carrying some snow pack runoff causing rivers and lakes in Western Washington to remain cold.
Meteorologists at the National Weather Service warn cold water can shock your system and result in hypothermia and drowning.
Temperatures will drop to a high of around 70 degrees starting Monday through next week. A south wind at 10 to 13 mph will cool the area and skies are expected to be partly cloudy.