State forecast for S.D.

Flood watch in the black hills through tuesday...

Tonight...Partly cloudy west to mostly cloudy central and east. Chance of showers central to far south. Lows from 30 to 35 west to around 40 southeast.

Monday...Mostly sunny and warmer west. Decreasing clouds east. Chance of light rain far southeast early. Highs in the mid 60s west to the upper 50s east.

Monday night...Mostly clear southeast to partly cloudy northwest. Lows near 40 west to near 30 southeast.

Tuesday...Sunny east and becoming mostly cloudy west. Chance of showers or thunderstorms far west in the afternoon and evening. Highs around 70 west to near 60 northeast.

Wednesday...Mostly cloudy. Showers likely west and a chance of showers or thunderstorms central. Lows in the upper 30s to lower 40s. Highs from 50 to 55 west to 60 to 65 southeast.

Thursday and friday...Mostly cloudy with scattered showers and a chance of thunderstorms. Showers becoming mixed with snow black hills and extreme west. Lows from 30 to 35 far west to the upper 40s southeast. Highs in the mid 40s far west to the lower 60s southeast.