Pendleton, OR — Rising spring temperatures and incoming rain have triggered flood concerns for Pendleton and surrounding areas through the weekend.
According to the National Weather Service in Pendleton, highs in the 60s and 70s through Thursday will rapidly melt snowpack across mid and high elevations. As rain moves in Thursday night and continues into Friday, runoff is expected to surge. This combination could push area rivers—including the John Day River—toward or above action stage by early Friday.
The John Day River near Service Creek is forecast to reach minor flood stage by Thursday night, peaking Friday morning. The Grande Ronde River at Troy and the Naches River at Cliffdell may approach similar levels but are less likely to exceed flood thresholds.
Drivers along U.S. Highway 395 should remain cautious as water levels rise along low-lying areas. Swift and frigid water increases hypothermia risks for anyone falling in. Stay away from creek banks, and supervise children and pets closely.
By Friday, daytime highs cool slightly into the 50s and 60s with lingering rain through early Saturday. Sunday appears drier, though another rain system may return Monday.
5-Day Spring Weather Outlook for Pendleton, OR:
- Thursday: Rain likely, high of 67°F
- Friday: Rain early, high of 61°F
- Saturday: Chance of rain, high near 58°F
- Sunday: Slight chance of rain, partly sunny, high of 63°F
- Monday: Rain likely, high around 58°F


