Lake Merwin Campers Hideaway Rainfall ForecastUnited StatesWAClark CountyLake Merwin Campers HideawayToday 18 Apr25%Sat 19 Apr25%Sun 20 Apr60%Mon 21 Apr20%Tue 22 AprNo RainWed 23 Apr5%Thu 24 Apr30%Lake Merwin Campers Hideaway rainfall forecast issued today at 5:04 pm. Next forecast at approx. 7:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Portland RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads