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Posted at 5:00 AM ET, 05/25/2010

Forecast: More sun with warming temperatures

By Matt Rogers

Turning hot tomorrow

* Hurricane chimp's cheap shot | Haiti's hurricane worries *
* 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.
8Less clouds, more sun, and warmer temperatures boost us up to a solid eight.
Get tomorrow's 'Digit' on Twitter tonight


Today: Patchy morning fog, then partly to mostly sunny, warmer. 77-81. | Tonight: Partly cloudy. 60-64. | Tomorrow: Mostly sunny, warmer. 86-90. | A Look Ahead | Get Express Forecast by E-mail


At this point in late May, the weather patterns in the mid-Atlantic have a tendency to fluctuate between spring and summer weather. This frequently offers some meteorological heartburn in forecasting the Memorial Day holiday weekend. So what is on the agenda this time around? Well, we do see a round of summer-like weather arriving by tomorrow with heat and humidity, but it looks like the weekend could get the cooler spring weather treatment overall and much more importantly, it is looking mostly dry.

Today (Tuesday): We still have that onshore wind flow, which means that there should be sufficient moisture around for some morning clouds, patchy fog, and even some light drizzle like we saw yesterday morning. Sunshine should begin breaking out later in the morning and the day should see much more sun overall. Look for highs in the upper 70s to around 80 with light breezes from the east. Confidence: Medium

Tonight: Partly cloudy skies should trend toward mostly clear late at night. Lows should range in the low-to-mid 60s. Winds are anticipated to be light and variable. Confidence: Medium

Keep reading for the forecast through the weekend...

Tomorrow (Wednesday): Everything is on the up and up for the middle of our workweek. Temperatures should be up to the mid-to-upper 80s (a 90 could sneak in), and sunshine will be up to a dominant mostly sunny status. You might feel that humidity just a bit. Winds will again be on the light and variable side, but mostly from the north and west. Confidence: Medium

Tomorrow Night: Partly cloudy skies with temperatures not falling as much. Lows should be in the upper 60s to low 70s (warmest in the concrete-dominant urban locales). Confidence: Medium


Thursday looks more humid and it should be a bit hotter too, but we are seeing the introduction of a shower and thunderstorm potential for the afternoon that could cap the high temperatures a bit. Highs should be in the mid- or upper 80s with more humidity. The chance of afternoon into evening rain is now 40%. Thursday night should see lows in the upper 60s to low 70s again, but if a backdoor cool front sneaks in a little stronger, we could drop toward the mid-60s. Confidence: Low-Medium

Our final Friday of May is looking tricky right now. The best thinking favors low-to-mid 80s, partly cloudy skies, and a continued 40% chance of showers and thunderstorms. The biggest risk to the forecast is if a backdoor cool front from the northeast drops into the area more strongly, we could hold the day in the 70s instead with possibly more clouds. Friday night should be partly cloudy with lows in the 60s. Confidence: Low

The holiday weekend is looking fantastic at the 30,000 ft viewpoint with cooler weather, more sunshine and mostly dry conditions. But to get into the weedy details just a little bit, we could see some lingering clouds and showers on Saturday (30% chance of pm activity) and temperatures might be worthy of light jackets overnight Saturday and Sunday. Mostly sunny skies are expected Sunday and Monday. Look for highs in the 70s to possibly around 80 with lows in the upper 50s and low 60s over the weekend period. Since it is still Tuesday, our confidence continues to be on the low to medium side as late May weather can sometimes offer surprises, so check back for updates this week. Confidence: Low-Medium

By Matt Rogers  | May 25, 2010; 5:00 AM ET
Categories:  Forecasts  
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Doesn't seem to be getting sunny. Could this be a bust?

Posted by: eric654 | May 25, 2010 8:34 AM | Report abuse

Yeah, I think it is too early to expect sunny at this point. Fog and low clouds early this morning should give way to partly sunny skies later this morning with our best chance of any mostly sunny conditions this afternoon.

Posted by: MattRogers | May 25, 2010 8:43 AM | Report abuse

What a waste that so often, our earliest sunrises are combined with dark, murky weather that lasts till noon. Every year it seems to happen on at least half the days in May and June!

Posted by: HenryFPotter | May 25, 2010 9:48 AM | Report abuse

HenryFPotter - May is one of the biggest if not THE biggest month for stationary fronts and stalled-out systems in our region. We have a lot of clouds, drizzle during this month. It is a transition month for our weather--as it tries to head into summer mode. But we're just stuck in that cloudy middle ground. We got VERY lucky last year and didn't have this lengthy transition. Hang in there! Long daylight hours through July to be had!

Posted by: Camden-CapitalWeatherGang | May 25, 2010 12:01 PM | Report abuse

Still no sign whatsoever of sun in DC.

I'm with HenryFPotter. These dreary, cloudy May days are wasting the best time of the year.

Posted by: ThinkSpring | May 25, 2010 12:21 PM | Report abuse

ThinkSpring - ok, I understand. But at least it is happening during the middle of our workweek, right? And personally, I am glad for reduced UV during the midday hours. I can go outside more, without sunscreen and a hat. Yes, I am that fair skinned. Very annoying ;) but these clouds are a treat for me. The humidity? much less a treat haha

Posted by: Camden-CapitalWeatherGang | May 25, 2010 12:29 PM | Report abuse

The weather HAS been very gloomy of late...while the "much-needed rain" crowd screams "4-inch precipitation deficit" and claims we didn't get as much water content in last winter's snow as we all had thought.

Now, with my oral surgery nearly healed and tonight's Clarendon Ballroom dance kicking off a very active May/June dance season, the indications are that a major trough setup in the Midwest could trigger an active severe weather period for us in June here in the Mid-Atlantic area. For starters, I have a possible dance just about every night this weekend. Let's just hope the severe weather DOES NOT hit on dance nights [which means every Tuesday night in June, as well as Memorial Day weekend] and that the MNR crowd holds off on the precip. especially the heavy stuff and flood threats...let's not have another "Nashville" here in Washington this summer!

Posted by: Bombo47jea | May 25, 2010 12:59 PM | Report abuse

Camden - Understand where you're coming from. And, yes, the workweek clouds are better than weekend ones. However, I do like to get outside at lunch for a little sun pick-me-up.

For me, the sun is my energy source some days. When these systems stall out over us and throw clouds our way for days on end, it's a real downer for me.

Here's to hopes for a nice weekend though!

Posted by: ThinkSpring | May 25, 2010 1:37 PM | Report abuse


That 4 inch rain deficit is HIS-TO-RY at Dulles. Back to normal for the year.

Just as 6 of the past 7 years have seen above normal precipitation in the DC area, this one surely will as well.

Posted by: ThinkSpring | May 25, 2010 1:40 PM | Report abuse

I think we can say "mix of sun and clouds" here in Rosslyn. We were mostly cloudy but we aren't up to "partly cloudy" yet.

Posted by: eric654 | May 25, 2010 2:14 PM | Report abuse


Agreed...though not quite so much rain fell down here closer to DCA...but we did get a good inch and a quarter at least here in Columbia Heights West.

Once again I have to put WGN in the weather doghouse tomorrow...they are cancelling Tom Skilling's noontime weather report for an early White Sox/Indians start in Cleveland...wish they'd keep their baseball out of the noon-hour news time frame! At least they let me know ahead of time this week. Last week I lost a whole hour of news and weather due to an early Cubs start. This year I'm watching only the Nationals games--the Orioles have dug themselves a big hole in the AL East cellar and we're not yet to Meomorial Day yet. Wish the O's could become contenders, or that Ted Leonsis would buy the team!

Posted by: Bombo47jea | May 25, 2010 2:16 PM | Report abuse

ThinkSpring, I looked at the weather page in Wapo today and saw that Dulles is over the average and has gotten 2 more inches than DCA this month(!). Wow.

Posted by: jojo2008 | May 25, 2010 3:10 PM | Report abuse

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