The latest radar and satellite shows a potent storm system developing to the northwest. Overnight lows will fall into the middle 30s in the mountains to middle 40s closer to the District as a warm front approaches the mid-Atlantic. Above average temperatures are expected Monday with highs in the middle to upper 60s. Warmer readings will be possible to the south. A cold front arrives late afternoon and will trigger scattered showers along with the potential for isolated thunderstorms.

The cold front will stall just south of D.C. on Tuesday. Unsettled weather and a tight temperature gradient will make forecasting highs on Wednesday a bit tricky. Highs will differ significantly depending on the location of the front. To the north, daytime temperatures will be in the 40s, to the south, the upper 60s. Showers and thunderstorms are also expected. Check out the extended outlook by clicking here.

Stay with ABC7, Weather Now, TBD.com and News Channel 8 for additional updates.