The 10-day span for Tumwater runs from a high near 87° on Monday down to 48° overnight on Sunday. Models drop roughly 0.28 in of precipitation across the stretch — watch Monday (90%). The NWS alert board for this area is currently clear. Right now Tumwater is about 25° cooler than nearby Tri-Cities. Longer view: marine climate — mild, showery winters and dry, gentle summers.
Tumwater, WA · Elev 174 ft · 47.01°N, 122.91°W · Washington · Forecast computed for these exact coordinates