Area Forecast5-day Forecast Grass ValleyTodayClearHigh:89Low:59FridayClearHigh:92Low:61SaturdayClearHigh:92Low:62SundayClearHigh:89Low:62MondayClearHigh:86Low:60MotherlodeToday: Sunny. Highs: 85 to 90. Tonight: Clear. Lows: 54 to 59. Sacramento RegionToday: Sunny and hot. Highs: 93 to 98. Tonight: Warm and clear. Lows: 58 to 63. Sierra NevadaToday: Lots of sunshine. Highs: 78 to 83. Tonight: Clear skies. Lows: 44 to 49. Bay AreaToday: Sunny. Highs: 66 to 71. Tonight: Clear with a breeze. Lows: 53 to 58. ALMANACGrass ValleyAvg. High this date: 87Avg. Low this date: 57Record High: 99 in 2006Record Low: 40 in 1987Record Precip.: 0.07" in 1979Precip. Last Year to Date: 0.00"Precip July 2007 to Date: 0.00"Avg. Year to Date …