Heat Advisory Issued as First Summer Heat Wave Builds Across Region
Triple-digit temperatures are expected in parts of Southern Oregon and Northern California through Tuesday.
MEDFORD, Ore. — The first significant heat wave of the summer is expected to bring 90-degree and triple-digit temperatures to much of Southern Oregon and Northern California this weekend, prompting heat advisories across several west side valleys, coastal areas and parts of far Northern California.
The National Weather Service says hot temperatures will build Saturday and continue through Tuesday, with the hottest conditions expected Sunday through Tuesday for many inland valleys.
Forecasters expect highs in the 90s to near 100 degrees across much of the region. Some west side valleys could reach 100 to 105 degrees, while portions of western Siskiyou County could climb as high as 105 to 110 degrees.
A National Weather Service Medford forecast graphic shows elevated HeatRisk Sunday through Tuesday, with the hottest temperatures expected Monday in several west side valleys. Graphic courtesy National Weather Service Medford.
The heat advisory includes Jackson County, Josephine County, eastern Curry County, parts of Douglas County, portions of Siskiyou County and interior Del Norte County. East Side communities in Klamath, Lake and Modoc counties are not the main focus of the advisory, but still are expected to see some of the warmest temperatures of the year so far, with highs reaching the upper 80s and 90s.
In Jackson and Josephine counties, including Medford, Ashland, Grants Pass, Cave Junction, Shady Cove, Jacksonville and surrounding communities, the advisory is scheduled from 11 a.m. Sunday to 11 p.m. Tuesday. Highs of 94 to 104 degrees are expected.
In central Douglas County and the eastern Douglas County foothills, including Roseburg, Sutherlin, Canyonville and Glendale, the advisory runs from 11 a.m. Sunday to 11 p.m. Monday, with highs of 90 to 102 degrees expected.
The National Weather Service in Medford has issued heat advisories for parts of Southern Oregon and Northern California as the first significant heat wave of the summer builds across the region. Graphic courtesy National Weather Service Medford.
Western Siskiyou County, including Happy Camp, Fort Jones, Etna and Callahan, is under a heat advisory from 11 a.m. Saturday to 11 p.m. Tuesday. Highs of 100 to 110 degrees are expected. Central and south-central Siskiyou County, including Yreka, Weed, Mount Shasta, Dunsmuir and McCloud, are under an advisory from 11 a.m. Sunday to 11 p.m. Tuesday.
Interior Del Norte County, including Gasquet, is under a heat advisory from 11 a.m. Saturday to 10 p.m. Tuesday, with warmer interior valleys expected to reach 95 to 102 degrees.
The National Weather Service says the heat will bring moderate to locally major HeatRisk levels, especially for people without reliable cooling or adequate hydration. Because these are the warmest temperatures of the year so far, forecasters say many people may not be used to this level of heat yet.
Residents are encouraged to drink plenty of fluids, stay in air-conditioned spaces when possible, avoid the sun during the hottest part of the day and check on relatives, neighbors, older adults and others who may be more vulnerable to heat.
People working or recreating outside should wear lightweight, loose-fitting clothing and try to limit strenuous activity to the early morning or evening.
Forecasters also are reminding the public that rivers, lakes and reservoirs remain cold even as air temperatures climb. Anyone heading to the water should wear a life jacket, limit time in cold water, never swim alone and keep a throwable flotation device nearby.
Temperatures are expected to trend cooler during the second half of next week.
Cover image: A heat advisory is in effect as the first significant heat wave of summer builds across Southern Oregon and Northern California, with highs up to 110 degrees possible in some areas. AI-generated image by HiveWire Daily.
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