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Posted at 4:35 PM ET, 05/16/2010

Forecast: Ready for a rainy, cool Monday?

By Brian Jackson

Rain arrives before or during a.m. rush

* Severe storms footage | Measuring the diameter of lightning *
* Outside now? Clouds, webcam & more: Weather Wall *

Today's Daily Digit
A somewhat subjective rating of the day's weather, on a scale of 0 to 10.
9Mild with filtered sun is a pretty decent way to finish a nice spring weekend.
Get tomorrow's 'Digit' on Twitter tonight


Today: Increasing clouds. Low-to-mid 70s. | Tonight: Cloudy. Rain develops late. Upper 50s to near 60. | Tomorrow: Rain. Low 60s to near 60. | A Look Ahead | Get Express Forecast by E-mail


Yesterday was the jewel of this weekend but today won't exactly be a lump of coal. Highs in the low-to-mid 70s are nothing to sneeze at even with building clouds. Should be a perfectly fine day for the last day of the Joint Service Open House and Air Show at Andrews Air Force Base. If you have anything to do outside, I'd get it done today. Rain is a good bet Monday into Tuesday -- maybe near or over an inch of it -- and shower chances could extend into midweek.

Temperatures: Latest D.C. area temperature map powered by iMapWeather (base map by Google). Click and hold on map to pan. Double-click to zoom. Refresh page to update. See larger map on our Weather Wall.

Today (Sunday): Another fairly tranquil day rounds out our weekend. We'll see a fair amount of clouds with highs in the low-to-mid 70s, though some sun should be able to shine through the clouds before they thicken later in the day. There is a threat of an isolated shower (20% chance), especially the further south and west you are. But most spots more than likely stay dry. Winds light from the north/northeast. Confidence: Medium-High

Tonight: We'll keep a slight (20%) chance of a shower into the overnight as skies become overcast. Rain is then likely to move into the area from southwest to northeast between around 4 and 7 a.m. Winds continue light, from the east/northeast, with lows in the upper 50s to near 60. Confidence: Medium

How rainy are we talking? Keep reading for the forecast through midweek...

Tomorrow (Monday): We've had some requests for rain recently (parts of the area are around 3" below normal since March 1, though there's no immediate threat of drought), and tomorrow looks to answer those. Rain starts from southwest to northeast across the area between around 4 and 7 a.m. Periods of rain continue through the day with temperatures mainly steady in the low 60s to near 60, as flow from the east/northeast, low pressure approaching from the southwest, and another low forming off the coast combine for a cool, damp and overcast one. Confidence: Medium-High

Tomorrow Night: Showers should lighten and may even break a bit overnight, but continued onshore flow keeps us socked in with overcast and possibly some fog and/or drizzle. All in all, not that great of a night. Lows should drop back to the mid-50s. Confidence: Medium


The coastal low pulls away on Tuesday. But it leaves behind an upper-level area of low pressure, keeping clouds around and showers chances up near 60%. Afternoon highs will again be on the cool side, in the low 60s. Rain chances decrease Tuesday night but spotty showers may remain with lows mainly in the low-to-mid 50s. Confidence: Medium

Wednesday promises to be less rainy than the previous two days. But with the upper-level low still spinning nearby, mostly cloudy skies are a likely with a chance of isolated to scattered showers. Highs should be slightly warmer, in the mid-to-upper 60s. Confidence: Medium

By Brian Jackson  | May 16, 2010; 4:35 PM ET
Categories:  Forecasts  
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Some sprinkles SW of Front Royal. Yesterday would have been a much better day to hang out laundry, but I couldn't, so today is it. I have about a 5 hour errand ahead so I have to put it out now. Hopefully these sprinkles will shift north and we'll get a little bit of a drying breeze or a patch or two of sun.

Posted by: eric654 | May 16, 2010 7:00 AM | Report abuse

Yesterday was gorgeous for events like the first Gaithersburg Book Festival, the Preak, the Great Urban Race downtown, the yoga on the Mall, the Air Show and lots of tourists, as the season kicks in.

Posted by: jaybird926 | May 16, 2010 7:27 AM | Report abuse

It didn't get nearly as cool last night as predicted because of clouds moving in. It doesn't look from here as though we're going to see *any* sun today.

Posted by: HenryFPotter | May 16, 2010 7:36 AM | Report abuse

Any idea when the rain will start in the morning? I wonder if I can plan on biking or if I should be thinking of alternate transportation. Thanks!

Posted by: lhaller | May 16, 2010 11:53 AM | Report abuse

What a fabulous spring weekend.
We have happy garden.

Posted by: FIREDRAGON47 | May 16, 2010 12:25 PM | Report abuse

Back from errand, had about the same weather from Nelson county up to Warren which was patchy dim sunshine and mild. The laundry is mostly dry, gave it a flip and it will be done in two hours or so.

Posted by: eric654 | May 16, 2010 1:30 PM | Report abuse


We'll update the forecast above later this afternoon with a timing estimate. For now, I'd say rain arrives across the region from southwest to northeast between 4-8 a.m. -Dan, CWG

Posted by: CapitalWeatherGang | May 16, 2010 2:32 PM | Report abuse

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