Theseus Lake Rainfall ForecastUnited StatesWAChelan CountyTheseus LakeToday 16 AprNo RainThu 17 AprNo RainFri 18 Apr5%Sat 19 Apr30%Sun 20 Apr40%Mon 21 Apr25%Tue 22 Apr10%Theseus Lake rainfall forecast issued today at 7:04 am. Next forecast at approx. 9:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Seattle RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads