Chehalis River - Preachers Slough Entrance UV IndexUnited StatesWAGrays Harbor CountyChehalis River - Preachers Slough Entrance1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAChehalis River - Preachers Slough Entrance UV forecast issued yesterday at 12:17 pm. Next forecast at approx. 12:17 pm.Get WillyWeather+ to remove ads