WDEF-TV News 12 Tennessee River Valley weather forecast Overnight: Mostly cloudy. Cool. Dry. Patchy dense fog at times. Lows: low 60’s. Winds: L&V Saturday: Mostly cloudy, warm. Dry. Highs: high 70’s. Winds: L&V. Overnight: Mostly cloudy. Cool. Dry. Lows: low 60’s. Winds: L&V Sunday: Cloud/Sun Mix. Warm. Windy at times. Highs: high 70’s. Winds: S…… MORE