Summer is heating up. Temperatures expected to climb into the 80s this weekend
Bellingham and Whatcom County will see its first extended heat wave of the summer season as a “thermal trough” of warm air blankets Western Washington with a full weekend of perfect beach weather.
Much of Western Washington will be facing minor to moderate heat risk from Friday through Monday, the National Weather Service said in an online briefing.
Forecast highs are in the upper 70s and low 80s for Whatcom County on Sunday, which is expected to be the warmest day. Warmer temperatures are predicted south of Everett and in Eastern Washington.
“Elevated fire weather conditions are likely due to warm and prolonged dry conditions of both the fuels and expectation of low relative humidity. Expect minimum relative humidity values to be between 20 and 30 percent in Cascade Valleys and along the ridges,” the weather service said.
Low temperatures will be in the upper 50s Saturday and Sunday.
“This will limit the overnight relief from the heat for those without adequate cooling, or who rely on opening windows during the night hours,” the weather service said.
“Temperatures will gradually cool down into the beginning of next week, although some uncertainty exists as to how quickly temperatures cool, especially for the interior,” the weather service said.
The average high temperature for early June in Bellingham is 67 degrees. Full weather history for Bellingham is missing from the National Weather Service website because of recent upgrade, meteorologist Reid Wolcott told The Herald.
A temperature spike last week on May 28 saw the warmest day of 2025, with a high of 78 in Bellingham.
This story was originally published June 6, 2025 at 8:52 AM.
