MEDFORD, Ore. (Aug. 2, 2026) — Southern Oregon is expected to face a dangerous combination of extreme wildfire conditions and prolonged, potentially record-challenging heat this week, prompting the National Weather Service in Medford to issue both a Red Flag Warning and a multi-day Heat Advisory for much of the region.
The Red Flag Warning will take effect at 2 p.m. Monday and remain in effect through 9 p.m. Tuesday, covering Fire Weather Zones 620, 621, 622 and 623. The warning includes Medford, Grants Pass, Ashland, Cave Junction, Eagle Point, Shady Cove, the Siskiyou Mountains and the southern Oregon Cascades.
Meteorologists said a combination of gusty afternoon winds, critically low humidity and exceptionally dry vegetation will create conditions favorable for rapid wildfire growth. Northwest winds are expected to increase to 10 to 15 mph Monday and Tuesday afternoons, with gusts reaching up to 25 mph before shifting to east and northeast overnight.
Relative humidity is forecast to drop to between 8% and 15% during the afternoon hours, while overnight recoveries are expected to remain poor, with humidity levels recovering to only around 20%. Those conditions will leave fuels critically dry and capable of supporting fast-moving fire behavior.
Forecasters warned that any wildfire ignitions during the warning period could spread quickly and become difficult to contain.
The warning comes as much of southwest Oregon is already in the “Extreme” Fire Danger category. Under that designation, activities capable of producing sparks are heavily restricted, and fire officials warn that even a single spark from equipment, vehicles or discarded smoking materials can quickly ignite dry grasses and brush. With fuels already cured by weeks of hot, dry weather, officials are urging residents and visitors to use extreme caution and avoid any activities that could start a wildfire.
The heightened fire weather concerns coincide with another stretch of intense summer heat expected to settle across the region beginning Tuesday.
The National Weather Service has issued a Heat Advisory from 11 a.m. Tuesday through 11 p.m. Thursday for the Rogue, Illinois, Applegate, Scott and Klamath River valleys.
Afternoon temperatures are forecast to climb between 105 and 113 degrees, while overnight lows are expected to remain only in the mid-60s, providing little opportunity for homes and buildings without air conditioning to cool overnight. Forecasters classify the expected conditions as posing a moderate heat risk, particularly for older adults, young children, outdoor workers and individuals with underlying medical conditions.
The combination of dangerous heat and elevated fire danger raises concerns for firefighters and emergency managers, as hot temperatures, low humidity and breezy conditions can increase wildfire activity while also creating hazardous conditions for those working outdoors.
The National Weather Service advises residents to drink plenty of water, remain in air-conditioned buildings whenever possible and limit strenuous outdoor activities during the hottest part of the day. Officials also encourage residents to check on elderly neighbors, family members and others who may be more vulnerable to heat-related illness.
For those who must work outdoors, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air-conditioned areas, staying hydrated and monitoring coworkers for signs of heat exhaustion or heat stroke.
Symptoms of heat-related illness include heavy sweating, dizziness, weakness, nausea, headache and confusion. Anyone showing signs of heat stroke should be moved immediately to a cool, shaded location while emergency medical services are contacted. Heat stroke is a life-threatening medical emergency, and officials urge the public to call 911 without delay if someone exhibits symptoms.
Fire officials are also reminding the public to remain aware of current fire restrictions, properly secure trailer chains, avoid parking vehicles over dry grass and ensure campfires are completely extinguished where they are permitted.
With hot, dry and breezy conditions expected to persist through much of the week, emergency officials say residents should remain prepared for rapidly changing fire conditions and monitor forecasts for any additional weather alerts.
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