Guerneville Rainfall ForecastUnited StatesCASonoma CountyGuernevilleToday 12 AprNo RainSun 13 AprNo RainMon 14 AprNo RainTue 15 AprNo RainWed 16 AprNo RainThu 17 Apr5%Fri 18 AprNo RainGuerneville rainfall forecast issued today at 5:05 pm. Next forecast at approx. 7:05 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Sacramento RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads