Halfmoon Lake Rainfall ForecastUnited StatesWAAdams CountyHalfmoon LakeToday 19 Apr20%Sun 20 Apr5%Mon 21 AprNo RainTue 22 AprNo RainWed 23 AprNo RainThu 24 Apr10%Fri 25 Apr10%Halfmoon Lake rainfall forecast issued today at 2:04 am. Next forecast at approx. 4:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Pendleton RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads