Southern Oregon Weather Swings From Showers to Triple-Digit Heat
Showers and chilly overnight temperatures will open the week before a rapid warming trend pushes West Side valleys toward 100 degrees Sunday and Monday.
MEDFORD, Ore. — Southern Oregon will begin the week with showers, cool nights and the possibility of freezing temperatures east of the Cascades before conditions turn dramatically warmer heading into the weekend.
The National Weather Service in Medford expects showers to spread across the region Monday and continue into Tuesday morning. Rain will be most frequent from the coast to the Cascades, particularly Monday afternoon and Monday night.
Lighter showers could linger across portions of southwest Oregon Tuesday afternoon and into Wednesday.
Cool and breezy overnight conditions are also expected during the first half of the week. Frost or freezing temperatures may develop east of the Cascades early Wednesday and again early Thursday, according to forecasters.
Showers and cool, breezy conditions are expected across Southern Oregon early in the week before a strong warming trend pushes temperatures well above normal by the weekend. Frost or freezing conditions may also develop east of the Cascades. (National Weather Service Medford)
The cooler weather will not last long.
A strong warming and drying trend is expected to begin around midweek and continue through the weekend, with afternoon temperatures eventually climbing 15 to 20 degrees above normal.
Medford is forecast to warm from a high near 67 degrees Monday to 82 Wednesday, 91 Friday and 101 Sunday. Grants Pass could also reach 101 degrees Sunday, while Roseburg may reach 96 and Cave Junction could approach 97.
East of the Cascades, Klamath Falls is forecast to climb from around 60 degrees Monday to 87 Sunday and 89 next Monday. Lakeview could reach the lower to middle 80s by the end of the forecast period.
Temperatures are forecast to climb sharply across inland Southern Oregon, with Medford and Grants Pass potentially reaching 101 degrees Sunday. The National Weather Service expects a moderate risk of heat-related illness for people sensitive to heat or without adequate cooling and hydration. (National Weather Service Medford)
Moderate HeatRisk Expected
The National Weather Service expects a moderate level of HeatRisk across inland areas away from the immediate coast Sunday and Monday.
That level of heat can affect people who are particularly sensitive to high temperatures, including those without effective cooling or adequate hydration. Because the coming heat will be the warmest experienced in the region so far this year, residents may not yet be acclimated to the conditions.
People should drink plenty of water, wear lightweight clothing, take breaks in air-conditioned spaces or shade and move strenuous outdoor activities away from the hottest portion of the afternoon.
Temperatures are expected to begin trending cooler again after Monday.
Even as air temperatures climb, Southern Oregon rivers and lakes remain cold and may be running swiftly. The National Weather Service urges swimmers and boaters to wear life jackets, avoid swimming alone and keep flotation devices nearby. (National Weather Service Medford)
Rivers and Lakes Remain Cold
Despite the approaching heat, rivers and lakes throughout the region remain cold, and some waterways continue to run swiftly.
The National Weather Service is reminding swimmers, boaters and paddlers that warm air temperatures do not necessarily mean the water is safe or comfortable.
Anyone entering or traveling near the water should wear a life jacket, limit time in cold water and avoid swimming alone. Boaters and groups near the water should also keep a flotation device nearby that can be thrown to someone in distress.
Sudden exposure to cold water can quickly affect breathing, movement and a person’s ability to swim, even during hot weather.
Cover image: As Southern Oregon prepares for its first significant heat of the season, with triple-digit temperatures possible in West Side valleys. (AI-generated image)
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