State forecast for S.D.

Today...Partly cloudy west. Mostly cloudy east with decreasing clouds in the afternoon. Areas of light snow east...Mainly in the morning. Highs in the upper 30s northeast with 40s elsewhere.

Tonight...Partly cloudy. Lows 15 to 25.

Friday...Partly cloudy. Becoming mostly cloudy overnight with a slight chance of light snow or light freezing rain. Highs in the 30s northeast to the 50s southwest.

Saturday...Partly to mostly cloudy. Slight chance of light snow overnight northeast. Lows in the upper teens northeast to the upper 20s southwest. Highs around 40 northeast to near 70 southwest.

Sunday...Partly cloudy and warmer. Lows in the 30s. Highs around 50 northeast to near 70 southwest.

Monday...Partly cloudy. Slight chance of light rain showers southwest. Lows in the 30s. Highs in the mid 40s northeast to around 60 southwest.