Remnants of Lee threaten substantial rain through midweek

What’s up with Katia and Lee? Hurricane Tracking Center

Today’s Daily Digit
A somewhat subjective rating of the
day’s weather, on a scale of 0 to 10.

Rain chances should hold off til late enough in the day or evening to squeeze out a summery, salvageable Sunday.
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Today: Partly sunny. 20% chance of afternoon storms. Upper 80s to near 90. | Tonight: 30% chance of showers, muggy. Low-to-mid 70s. | Labor Day: Mostly cloudy. Increasing chance of showers/storms. Near 80. | A Look Ahead | Get Express Forecast by E-mail


Our upcoming forecast period is an unsettled one. While today should be mostly pleasant, the threat of showers and storms increases tonight and tomorrow as a cold front gets closer. Rain isn’t a sure bet tomorrow, but I’d advise at least having a sheltered backup plan for any Labor Day outdoor activities. More significant periods of rain may develop Monday night into Wednesday as the remnants of Tropical Storm Lee head toward our area. Some areas may see several inches of rain today through midweek.

Radar & lightning: Latest D.C. area radar shows movement of precipitation and lightning strikes over past two hours. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

Today (Sunday): Pretty humid out there, but overall not bad for a holiday weekend Sunday. We should manage partly sunny skies, pushing our highs to the upper 80s to near 90. Showers and storms to the west, associated with an approaching cold front, probably stay west, with just a 20% chance a couple make it in here during the late afternoon. Confidence: Medium

Tonight: Even though we lose the daytime heat, shower/storm chances increase a bit to around 30% as the cold front moves closer. Mostly cloudy skies and a moist breeze from the south keep us mild and muggy through the night, with lows in the low-to-mid 70s. Confidence: Medium-High

Keep reading for the forecast through the midweek...

Tomorrow (Monday): Not an ideal forecast for Labor Day, as the cold front closes in and flow from the south begins to tap moisture from what is currently Tropical Storm Lee. Showers and storms are possible at any point in the day, with the best chances (60-70%) developing later in the afternoon into evening. Mostly cloudy skies hold highs to the upper 70s to low 80s with fairly high humidity. Confidence: Medium

Tomorrow night: Periods of rain are likely as a slug of tropical moisture arrives. Lows should be mainly in the mid-to-upper 60s. Confidence: Medium


Heading back to work on Tuesday and again on Wednesday, we’re still looking at tempestuous conditions. The remnants of Lee mingling with a cold front in the area spells a 70-80% chance of rain both days, with relatively cool highs in the 70s. Confidence: Low-Medium

Rain totals today through midweek may approach or exceed 3 inches in some areas. One bit of good news is the highest totals may end up being west toward the mountains, whereas Irene dumped the most rain east of I-95. Even so, flooding may be an issue so stay tuned.