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Posted at 8:15 AM ET, 05/18/2010

Forecast: Another damp day, then trending drier

By Matt Rogers

Warm-up starts tomorrow; much nicer Thurs & Fri

* Yesterday's rain: DCA (.49"); IAD (.53"); BWI (.29") *
* Photo sequence of severe thunderstorm | CWG T-Shirts *
* Outside now? Radar, temps & more: Weather Wall | Traffic *

Today's Daily Digit
A somewhat subjective rating of the day's weather, on a scale of 0 to 10.
2Another cool, dreary & dampish day, though some hope for p.m. drying raises the digit a notch from Monday.
Get tomorrow's 'Digit' on Twitter tonight


Today: Morning light rain with decreasing afternoon shower chances. 56-61. | Tonight: Mostly cloudy. 20% chance of showers. 51-54. | Tomorrow: Mostly cloudy. 20% chance of a passing shower. 66-70. | A Look Ahead | Get Express Forecast by E-mail


A complicated weather system continues to influence our area into tomorrow. First, a weakening area of low pressure toward the Ohio Valley transfers its energy to a low off the coast today. The coastal low should bring today's heaviest rains to the Eastern Shore, but we could still see some occasional showers and drizzle in the D.C. area. Then, a lingering upper-level area of low pressure likely keeps clouds around into a good part of tomorrow, before nicer weather Thursday and Friday and an uncertain weekend.

Radar: Latest regional radar shows movement of precipitation over past three hours. Powered by HAMweather. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

Today (Tuesday): Look for light rain around the area through the morning hours. Shower chances decrease this afternoon to about 30%, though even if there aren't showers, drizzle could remain. Temperatures struggle to do better than the upper 50s to near 60. Winds from the northeast should be slightly stronger than yesterday, around 10-15 mph, creating a wee bit more of a wind chill. How much rain today? Probably around .10" or less. Confidence: Low-Medium

Tonight: The cloud deck wants to linger as upper-level low pressure is slow to vacate the mid-Atlantic. We still run a small risk (20% chance) of scattered showers. Lows should be in the low-to-mid 50s with light breezes from the north. Confidence: Medium

Keep reading for the forecast through the weekend...

Tomorrow (Wednesday): Call it a transition day as temperatures improve some 10 degrees to at least the mid-to-upper 60s for highs, but clouds continue to dominate with a 20% chance of a passing shower. I wouldn't be surprised, however, to see some breaks of sun, especially by afternoon. With enough sun, some locations could hit 70. Winds light from the north. Confidence: Medium

Tomorrow Night: Partly cloudy skies are anticipated with slightly warmer low temperatures ranging through the mid-50s. Look for winds to stay light and non-annoying. Confidence: Medium


Thursday and Friday will compete for best day of the week. Partly to mostly sunny skies are expected Thursday with highs in the mid-to-upper 70s, followed by a partly cloudy Thursday night with lows in the 50s. The warmest day of the work week comes Friday (not as warm, though, or nearly as humid as last Friday's rather steamy upper 80s) as highs head for near 80 or as high as the low-to-mid 80s under mostly sunny skies. Confidence: Medium

The weekend doesn't look like a washout (at least not yet), but there is growing concern that another system not unlike the current one could deliver increasing clouds and showers. Although forecast confidence is low, we'll keep the caution flag up with a 40% chance of showers, highs in the 70s and morning lows in the 50s. If the models trend wetter and cooler, then we may have to take highs down to the 60s. Confidence: Low

By Matt Rogers  | May 18, 2010; 8:15 AM ET
Categories:  Forecasts  
Save & Share:  Send E-mail   Facebook   Twitter   Digg   Yahoo Buzz   StumbleUpon   Technorati   Google Buzz   Previous: PM Update: Steady rain to turn showery
Next: 2010 on track for warmest year on record


I'm not sure which way I like my moisture in the air more - from constant rain/drizzle like the last 2 days or fairly high humidity like we were having several days ago. Either way, as long as Mother Nature gets it out of her system by Memorial day weekend, it's ok with me...

Posted by: amaranthpa | May 18, 2010 7:57 AM | Report abuse

Happily, the kiwis, passion fruit vine, filberts and other things I planted on Sunday got 0.7 inches of free watering yesterday. Need to stop and get mulch tonight and think about what I'm going to do for lattices.

Posted by: eric654 | May 18, 2010 8:03 AM | Report abuse

anybody have any idea how bombo feels about today's weather? ;-)

bombo, good luck today.

Posted by: walter-in-fallschurch | May 18, 2010 8:49 AM | Report abuse

Okay, I know I complained about it being Monday AND damp AND chilly AND rainy yesterday; to be honest, though, I was kind of hoping for more of it to change than just the Monday part. (Can we at least get rid of the chilly part please? I can deal with the rain.)

Posted by: | May 18, 2010 10:05 AM | Report abuse

This seems to be one of the few consistent patterns in DC. In May, we always get this "Seattle" weather, for about two weeks. I'm betting we don't see the sun until the end of next week, then it becomes hot!

Posted by: ThinkGreen | May 18, 2010 10:12 AM | Report abuse

End of next week will be just in time for the Memorial Day Weekend (which actually does look sunny and in the 80s right now). But I'm betting instead that we'll also see sun for the second half of this week too. Hang in there!

Posted by: MattRogers | May 18, 2010 10:17 AM | Report abuse

how long does a thread remain "active"? i just tried to post a reply to eric654 on a thread that started on may 10 and it didn't work. do you guys monitor the threads and "close" it after the comments die down? or do the threads close on their own?

Posted by: walter-in-fallschurch | May 18, 2010 10:32 AM | Report abuse

Sorry walter, looks like it has to be in the active week page (not in archives)

Posted by: Camden-CapitalWeatherGang | May 18, 2010 10:55 AM | Report abuse

Walter...not too happy about the low extractions are scheduled at 4 pm...but we aren't getting the thunderstorms predicted earlier which would have raised issues WRT my travel to and from the oral surgeon's I posted earlier this week, the rain is less an issue than the possible effect of lower pressure on my recuperation from the extractions.

Will try to post an update when I get home this evening.

Posted by: Bombo47jea | May 18, 2010 12:22 PM | Report abuse

Hi Walter, you can probably reply in the new global warming thread without stretching the topic too much (or just talk about how warm April was around here - I for one enjoyed the warmth).

Posted by: eric654 | May 18, 2010 12:33 PM | Report abuse

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