The 10-day span for Umatilla runs from a high near 103° on Tuesday down to 59° overnight on Wednesday. Rain totals look negligible: a dry run of days ahead. Wind is the one to watch: gusts to 32 mph around Monday. The NWS alert board for this area is currently clear. Right now Umatilla is about 21° cooler than nearby Tri-Cities. Longer view: marine climate — mild, showery winters and dry, gentle summers.
Umatilla, OR · Elev 322 ft · 45.92°N, 119.34°W · Oregon · Forecast computed for these exact coordinates