Washington County

Extreme Heat Watch issued June 9 at 9:16PM PDT until June 15 at 11:00PM PDT by NWS Portland OR

* WHAT...Dangerously hot conditions with temperatures between 95 and 100 degrees possible. * WHERE...Portland Metro Lowlands, Western Columbia River Gorge, Inner Vancouver Metro, and East Clark County Lowlands. * WHEN...From Sunday morning through Monday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Low temperatures between 63 to 66 degrees are possible for Monday morning and Tuesday morning. However, there is a 10-20% chance that low temperatures remain above 70 degrees, which would lead to limited overnight relief.