The early-season Oregon heat wave broke records in Portland, Hillsboro and Eugene on Sunday.

The National Weather Service reported Sunday evening that the high temperature in Portland reached 96 degrees, breaking the previous record for June 8, which was 94 degrees in 1955. In Hillsboro, the high also reached 96 degrees, breaking the 1948 record of 95.

Eugene hit 94 degrees, which broke the record of 93 degrees set in 1955.

The heat wave continues throughout much of Oregon on Monday. A heat advisory is in place until 10 p.m. for much of the Willamette Valley, the Columbia River Gorge, the Hood River Valley and the Central Oregon Cascades. Temperatures in those areas could reach the high 90s.

The NWS warns these areas are at a moderate heat risk level. The high temperatures will impact people who are sensitive to heat, especially those without effective cooling or adequate hydration.

Temps are climbing. Older adults living alone are most at risk. Please check on your older neighbors. Help them make a plan to get somewhere cool. https://t.co/MHb2GQvRx9

— Portland/Multnomah 911 (@911BOEC) June 8, 2025

Portland Public Schools announced Sunday evening that schools would be closing three hours early on Monday, due to the extreme heat. All after-school activities were canceled.

Heat advisories are also in place for areas of northeastern Oregon, where temperatures could exceed 100 degrees. This poses a moderate to major risk of heat-related illness.

Temperatures across Oregon will begin to cool down on Tuesday, according to NWS forecasts.

News Source : https://www.opb.org/article/2025/06/09/portland-forecast-heat-record/