Area Forecast5-day Forecast Grass ValleyTodayPM T-stormsHigh:89Low:58MondayPartly CloudyHigh:87Low:56TuesdayClearHigh:87Low:55WednesdayPartly CloudyHigh:85Low:55ThursdayPartly CloudyHigh:84Low:55MotherlodeToday: Haze and smoke. Highs: 85 to 90. Tonight: Variably cloudy. Lows: 56 to 61.Tomorrow: More smoke and haze. Highs: 88 to 93.Sacramento RegionToday: Widespread haze. Highs: 90 to 95.Tonight: Areas of smoke. Lows: 61 to 66.Tomorrow: Very warm, some smoke. Highs: 89 to 94.Sierra NevadaToday: Thunder possible. Highs: 81 to 86. Tonight: Increasing clouds. Lows: 43 to 48.Tomorrow: Breezy, chance of thunder. Highs: 78 to 83.Bay AreaToday: Areas of smoke. Highs: 66 to 71.Tonight: Haze and smoke. Lows: 52 to 57.Tomorrow: Morning patchy fog. Highs: 67 to 72.ALMANACGrass ValleyAvg. High this …