FORECAST: Week starts mild, but much cooler arrives late week
Nov 17, 2024
With the clouds in place, temperatures will run a few degrees above normal tonight, so it won't be as cold as last evening. Forecasted overnight lows range from the mid-30s in the coldest locations to the mid-40s around the Beltway.
On Monday, a weak cold front crosses the region, and other than an isolated sprinkle or shower along and west of the Allegheny Front in western Maryland, the front will pass dry. Before the front arrives, expect it to start mild. The thermometer is forecast to reach into the 60s to around 70 on Monday afternoon east of the mountains, with 50s for the higher elevations.
A stalled front will linger into the DMV Tuesday into Tuesday night. This could spark up a few isolated showers. Highs on Tuesday will remain in the 60s. By Wednesday, a storm system from the west will begin to inch closer to the DMV. Spotty showers will be seen throughout the day on Wednesday, with highs remaining in the mid to upper 60s. A secondary storm system will develop on Wednesday night, and the associated cold front will race through the DMV. This will spark widespread showers and an isolated rumble of thunder, and gusty winds can not be ruled out Wednesday night.
Tuesday, the cold front that passes through the area Monday night stalls south of D.C. and returns north as a warm front. As a result, our rain chances will gradually increase from southwest to northeast heading into Tuesday night. It's not as mild as Monday, but the DMV will see temperatures above average and in the 60s.
On Wednesday, wet weather is still expected, along with above-normal daytime highs. Expect mid-week highs in the mid-60s to low 70s ahead of Wednesday's front and the welcome rain before dropping dramatically on Thursday and Friday. In addition, this storm system has quite a bit of wind, so expect the initial warm wind to be followed by a chilly northwest wind heading into Thursday afternoon. The focus then shifts to our furthest western counties in Maryland and West Virginia, where the season's first snows will likely occur. Model guidance continues to favor prolonged snow showers, some becoming moderate to heavy at times, as overall mountain travel may become very difficult given the expectation of snow-covered roads and areas of blowing snow. The threat of snow showers will likely persist into Saturday, with improving conditions to finish the weekend.
Thursday into Friday, most people can expect high temperatures to range from the mid-40s to low 50s, with 30s in the mountains. Winds gusting between 25 and 35 mph could bring wind chills into play. All the precipitation looks to end by Sunday, but it stays cool even with increasing sunshine.
7-Day Forecast:
Tonight: Partly cloudy skies with lows in the 40s.
Monday: Partly cloudy skies. Highs in the 60s, with overnight lows in the upper 40s.
Tuesday: Some early sunshine, followed by increasing clouds and spotty mountain showers at night. Highs will be in the 60s, with overnight lows in the upper 40s to lower 50s.
Wednesday: Mainly cloudy skies with rain showers that develop through the afternoon and evening. Highs will be in the mid-to-upper 60s and a few lower 70s, with overnight lows dropping into the upper 30s to mid-40s.
Thursday: Variably cloudy skies with scattered showers, rain, and snow for the mountains. Breezy. Highs will be in the upper 40s to mid-50s, with overnight lows in the 30s.
Friday: Mostly cloudy skies with a chance of mountain showers and breezy conditions. Highs will be in the upper 40s to lower 50s, with overnight lows in the upper 30s to lower 40s.
Saturday: It will be partly cloudy and breezy, with some mountain snow flurries. Highs will be in the 50s, with overnight lows in the upper 30s to lower 40s.
Sunday: Partly cloudy skies. Highs will be in the 50s, with overnight lows in the upper 30s to lower 40s.