1:15 p.m. update: A lot of the rain has evaporated on its way north, so the afternoon may well end up mainly dry as originally forecast. Here’s another midcourse correction: Chance of rain this afternoon down to 40% (slightly higher in southern Maryland and far southern Va. suburbs).
9:45 a.m. update: We need to up day time rain chances from 20% (below) to 60%. Big shield of rain has reached Richmond and is pushing north. Southern suburbs could see some drops by just after noon, with most of the area likely to see some showers by mid-to-late afternoon.EXPRESS FORECAST
Today: Cloudy, rain developing this afternoon. 70-75. | Tonight: Rain likely. 57-63. | Tomorrow: More rain, heavy at times. 68-73. | Get Express Forecast by E-mailFORECAST IN DETAIL
The familiar September cloud canopy is returning to our region today with a three to four-day stay, but hopefully an early exit just ahead of the upcoming weekend. The clouds come courtesy of a two-part story this week. It begins with a disturbance arriving from the South today into tomorrow (rains arriving tonight). It then ends with a Midwest weather system arriving on Thursday into early Friday. We could be free of all inclement weather by Friday afternoon in time for a comfortable, mostly sunny, but cooler weekend.
Today (Tuesday): (See update at top of post - this is from earlier) Mostly cloudy skies with cooler, but still comfortable high temperatures in the low-to-mid 70s. The approaching storm from the South will offer winds from the east at 5 to 10 mph, which will also increase the humidity levels too. We can’t entirely a rule out a sprinkle or light rain shower late (20% chance). Confidence: Medium-High
Tonight: Rain likely
especially after midnight. And it could be heavy at times toward dawn. Lows in the upper 50s to low 60s with winds from the east at 5 to 10 mph.
Keep reading for the forecast through the weekend...
Tomorrow (Wednesday): A dreary day is expected as cloudy skies and intermittent moderate to heavy rain affects the area. Rainfall totals could run 1 to 2” combined with Tuesday night’s activity, which could trigger some localized urban flooding issues. We could also hear some rumbles of thunder embedded in the rain. High temperatures are held to the upper 60s to low 70s. Confidence: Medium-High
Tomorrow night: A 40% chance of lingering showers, especially in the evening hours and then just mostly cloudy overnight. Lows should mainly be in the low-to-mid 60s due to our increased humidity and cloud cover, but some outlying areas could sneak down into the upper 50s. Confidence: MediumA LOOK AHEAD
Thursday is a transition day as one storm leaves and another one approaches. I believe we could see cloud breaks with sun at times, but partly to mostly sunny skies are most likely most of the time. We can’t rule out some showers too with a 40% chance, especially in the afternoon. Warmer than Wednesday with highs in the mid-to-upper 70s. Thursday night sees a better likelihood of showers (60%) under cloudy skies and lows in the mid-to-upper 50s. Confidence: Medium
Friday begins the weekend improvement process with partly cloudy skies in the morning (along with a 30% chance for a lingering shower) and then more chances for sunshine at times by afternoon. It will get breezy in the afternoon with highs ranging through the 70s. Friday night is also breezy and cooler with lows dropping down to the middle 40s in the outer suburbs to the low 50s in the city. Confidence: Low-Medium
A better weather weekend comes our way, but temperatures look to continue near or a bit cooler than normal. Highs in the mid-to-upper 60s with lows from the middle 40s to low 50s should prevail. Mostly sunny skies are likely, especially on Sunday. The biggest risk to our forecast is that an upper level low pressure area overhead and especially to our north generates a few more afternoon clouds than currently forecast. If that happens, our skies could be more on the partly sunny side. And it looks a bit breezy potentially again too. Confidence: Low-Medium.