Portland, OR – Triple-digit heat may not be back just yet, but summer heat makes a firm comeback in Oregon as temperatures climb near 87°F in Portland by Friday, July 18. With dry air and light northwest winds, drivers on I-84 could face harsh afternoon glare and high in-car temps.
According to the National Weather Service in Portland, Friday will be sunny and calm with temperatures rising into the upper 80s. Winds may shift west-northwest in the afternoon, reaching 6 mph. Nighttime cooling will bring some relief, with lows dipping to a comfortable 58°F.
Weekend conditions remain dry and seasonably warm. Saturday will top out near 80°F under mostly sunny skies. Sunday begins cloudy but will clear, with highs around 79°F. Residents should take extra care with hydration and sun protection, especially during midday hours. With dry conditions persisting, fire risk remains elevated in forested areas across Multnomah and Clackamas counties.
Expect cooler nights throughout the weekend and into early next week, keeping overnight lows in the upper 50s. That temperature dip offers ideal windows for early morning exercise or energy-saving ventilation.
📆 Five-Day Outlook for Portland (July 18–July 23):
- Friday, July 18: Sunny, high near 87°F; low 58°F. Light wind.
- Saturday, July 19: Mostly sunny, high near 80°F; low 58°F.
- Sunday, July 20: Decreasing clouds, high near 79°F; low 58°F.
- Monday, July 21: Mostly sunny, high near 79°F; mostly clear night low around 58°F.
- Tuesday, July 22: Sunny, high near 83°F; clear and mild Tuesday night.
- Wednesday, July 23: Sunny, warmer, high near 87°F.
More updates will follow if temperature advisories or air quality alerts are issued.
