Today Partly cloudy. Highs: upper 30s Lows: low 20s Wednesday Mostly sunny. Highs: mid-40s Lows: low 30s Thursday Partly cloudy. Highs: mid-40s Lows: mid-30s Friday A chance of showers. Highs: low 40s Lows: low 30s Grass Valley High yesterday 39 Low yesterday 25 Precipitation to 5 p.m. Tr Nevada City High yesterday 30 Low yesterday 28 Precipitation to 7 a.m. .00 Area communities Alta Sierra 36/26/1.5"sn Cedar Ridge 35/26/2"sn Chicago Park NA/NA/NA Lake of the Pines 38/29/1.3"sn Lake Wildwood 37/26/.25"sn North San Juan 31/24/2"sn Peardale 33/24/3"sn Penn Valley 37/30/1.5"sn Washington 38/26/3"sn GV Rainfall Season to date 32.07 Last season to date 15.70 Normal to date 26.58 NC Rainfall Season to date 38.34 Last season …