Weather News

Here’s what to expect from the heat this week in Whatcom County

Bellingham and Whatcom County residents will see the warmest temperatures of the year this week as a heat wave bakes the entire West Coast.

This week’s hottest days likely will be Tuesday, July 26, and Wednesday, July 27, with daytime highs around 90 for areas closer to the Salish Sea and into the mid-90s and warmer for inland Whatcom County, the National Weather Service in Seattle said in an online briefing Monday, July 25.

“A heat advisory is in effect for much of the interior and Cascades where highs will reach the 90s (around 10-15 degrees warmer than average),” said meteorologist Jake DeFlitch in the online forecast discussion.

Environment Canada issued a heat warning for Abbotsford, B.C., where highs in the low to mid-90s were expected.

Daytime highs should cool to the mid- to upper 80s later in the week for the Bellingham area, but could remain around 90 in other parts of lowland Whatcom County.

Unseasonably warm temperatures will remain through at least Friday, when persistent high pressure is expected to dissipate, allowing cooler air to sweep in from the Pacific.

But don’t expect much of an evening sea breeze until later in the week as overnight low temperatures are expected to remain in the 60s.

Robert Mittendorf
The Bellingham Herald
Robert Mittendorf covers civic issues, weather, traffic and how people are coping with the high cost of housing for The Bellingham Herald. A journalist since 1984, he also served 22 years as a volunteer firefighter for South Whatcom Fire Authority before retiring in 2025.
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