Summit Lake Rainfall ForecastUnited StatesWAThurston CountySummit LakeToday 19 Apr15%Sun 20 Apr60%Mon 21 Apr15%Tue 22 AprNo RainWed 23 AprNo RainThu 24 Apr20%Fri 25 Apr35%Summit Lake rainfall forecast issued today at 3:04 pm. Next forecast at approx. 5:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Langley Hill RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads