Extreme Heat Watch

Locations Affected

Portland, OR ∙ Vancouver, WA ∙ Salem, OR ∙ Gresham, OR ∙ Hillsboro, OR ∙ Beaverton, OR ∙ Marshland Division, OR ∙ Cedar Hills, OR ∙ Monmouth, OR ∙ Lake Oswego, OR

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Portland OR 128 PM PDT Thu Jul 10 2025 ...EXTREME HEAT WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY EVENING... * WHAT...Dangerously hot conditions with temperatures between 95 and 105 degrees possible. Low temperatures between 65 to 70 degrees are possible, which would limit overnight relief. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Lower Columbia River and Cowlitz River Valleys, and Central Willamette Valley. * WHEN...From Tuesday afternoon through Wednesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...There is a 40-50% chance that Tuesday night low temperatures remain above 70 degrees. There is also a 20-40% chance that Tuesday and Wednesday high temperatures exceed 105 degrees across the Willamette Valley. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night, unless air quality is degraded due to wildfire smoke. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Monitor the latest forecasts and warnings for updates.

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