Oregon Braces for Weather Whiplash as Temperatures Climb

Parts of the state could see highs in the 70s, while the Portland area remains rainy and cool.

Mar. 16, 2026 at 1:23pm

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Much of Oregon is expected to see a significant temperature spike this week, with some areas reaching the high 70s - up to 20 degrees warmer than normal. However, the Portland area and northwest Oregon coast will remain cooler and wetter, as an atmospheric river system brings rain to the region. The warm weather could exacerbate concerns about the upcoming wildfire season, as snowpack levels in the state's mountains are already well below normal.

Why it matters

The dramatic temperature swings and lack of snowpack highlight the unpredictable nature of Oregon's weather patterns, which have major implications for the state's agriculture, water resources, and wildfire risk. This 'weather whiplash' is becoming more common due to climate change, and communities must adapt to increasingly volatile conditions.

The details

While much of California and Arizona could see dangerous heat dome temperatures near 105 degrees, Oregon will avoid the triple-digit highs. However, areas like Medford, Lakeview, Klamath Falls and Ashland could still see temperatures climb into the high 70s - up to 20 degrees above normal. Meanwhile, the Portland area and northwest Oregon coast will remain cooler and wetter, as an atmospheric river system brings rain to the region. Inland areas from Pendleton to Bend are also expected to see highs in the low 70s.

  • Temperatures are expected to climb starting on Tuesday, March 18, 2026.
  • The warm, dry weather is forecast to last through the end of next week.

The players

National Weather Service

The federal agency responsible for weather forecasting and issuing weather-related warnings and advisories.

Dam operators

Agencies and organizations responsible for managing and maintaining dams and reservoirs in Oregon, who are working to keep reservoir levels higher in anticipation of less snowmelt.

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What they’re saying

“The majority of the moisture is aimed more towards northern Washington and British Columbia but the southern part of that moisture could still graze the Portland area.”

— Hannah Chandler-Cooley, Meteorologist, National Weather Service (OPB)

“They're trying to keep those reservoirs a little higher, knowing they won't get as much snow melt.”

— Hannah Chandler-Cooley, Meteorologist, National Weather Service (OPB)

What’s next

Dam operators will continue to monitor reservoir levels and make adjustments to prepare for the expected lack of snowmelt this spring and summer.

The takeaway

Oregon's rapidly changing weather patterns, driven by climate change, are creating new challenges for the state's water resources, agriculture, and wildfire preparedness. Communities must adapt to this 'weather whiplash' by implementing resilient infrastructure and emergency planning measures.