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Posted at 10:25 AM ET, 06/29/2010

Forecast: Gradual improvement - less hot & humid

By Matt Rogers

Heat returns for holiday weekend

* Outside now? Radar, lightning, temps & more: Weather Wall *

Today's Daily Digit
 
A somewhat subjective rating of the day's weather, on a scale of 0 to 10.
 
6Yeah, we still will hit the 90s, but some sun and lowered humidity earns us a few points over Monday.
 
Get tomorrow's 'Digit' on Twitter tonight

EXPRESS FORECAST

Today: Variable skies, lower humidity, but still hot. 89-93. | Tonight: Partly cloudy, cooler, and comfortable. 63-67. | Tomorrow: Mostly sunny and much cooler. 78-82. | A Look Ahead | Get Express Forecast by E-mail

FORECAST IN DETAIL

This record-breaking heat pattern is such a force that it will require two colds fronts to kill it (at least for a few days). The first cold front came through last night and it is dropping our humidity. The second cold front will be your favorite as it sweeps through the area this afternoon making tonight incredibly pleasant. But as alluded to earlier, more heat should arrive over the upcoming holiday weekend.

20100628_0544_thumb.jpg
Thunderstorm approaches Dupont Circle yesterday. By CWG photographer Ian Livingston (click to enlarge)

Today (Tuesday): Periods of sun should greet us for much of the day, but don't be surprised to see partly cloudy skies at times as we usher a secondary cold front through the area. Locations just south of the metro area -- which mostly missed out on thunderstorms yesterday (toward Fredericksburg) -- could see a few today (20% chance). Highs should reach the low 90s, but that humidity should be considerably lower, especially toward late afternoon/evening. Winds light at 10-15 mph and mainly from the northwest before coming from the north later in the day. Confidence: Medium-High

Tonight: Temperatures should cool down faster than they have most evenings around here and yes, you might be able to call an air-conditioning time out. Lows should be in the 60s area-wide with light breezes under partly cloudy to clearing skies. Confidence: High

Keep reading for the forecast through the weekend...

20100628_0515.jpg
Storm clouds over Dupont Circle yesterday. By CWG photographer Ian Livingston.

Tomorrow (Wednesday): It's a super-wow day as we are transported back to the pleasant days of this past spring. Prepare for sunny skies, cool breezes, and highs only in the upper 70s to low 80s. With low humidity, it will feel downright spectacular (Dan, you better give this a "10" on your daily digit tomorrow!). Confidence: High

Tomorrow Night: The cool and low-humidity Canadian air mass should push temperatures even lower with late-night and early-morning lows all the way down into the 50s for the suburbs and down to near 60 in the city. It might even be light jacket weather (late night). Mostly clear skies are expected. Confidence: Medium-High

A LOOK AHEAD

Thursday and Friday continue our deserved respite from the heat and humidity. Under sunny skies, comfortably warm daytime highs in the low-to-mid 80s and overnight lows in the upper 50s to low 60s should prevail. Overnight conditions should also be mostly clear. Confidence: Medium-High

The upcoming holiday weekend brings a gradual return to the summer weather we just left behind (already!?!?). On the positive side (or negative, for gardens), nearly the entire weekend should be dry with mostly sunny skies. Only Monday (July 5th) could run a 20% risk of widely scattered thunderstorms. Highs go like this: upper 80s to around 90 on Saturday, low 90s on Sunday, and mid-90s by Monday. Lows should be in the 60s, but maybe the low 70s by Monday morning. Each day the humidity increases, so it gets less comfortable as we go. It is summer after all.Confidence: Low-Medium

By Matt Rogers  | June 29, 2010; 10:25 AM ET
Categories:  Forecasts  
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Next: June 28 Severe thunderstorm photo sequence

Comments

I think yesterday (Monday) was amazing in that the High and Low happened within 50 minutes of each other 97 at 1:27 pm and 73 at 2:17 pm, I am guessing that this has not happened too often.

Posted by: minerdude | June 29, 2010 8:08 AM | Report abuse

Woo hoo! Open windows tonight!

Posted by: kbockl | June 29, 2010 9:22 AM | Report abuse

Distinct back edge of clouds is now cutting across Rosslyn.

Posted by: eric654 | June 29, 2010 10:15 AM | Report abuse

minerdude, it was very neat yesterday how quickly the rain cooled everything off. Then it went back up--almost to the highs of the day again! No it doesn't happen too often ;)

kbockl, true tonight will be better than recently, but I am holding out for opening windows later this week. Can't wait!

eric654, I miss the clouds already. It made for a pleasant morning commute actually. Oh well. Hopefully we don't have a huge dry spell ahead of us again, because we have had very few clouds this June--I dislike! :)

Posted by: Camden-CapitalWeatherGang | June 29, 2010 12:27 PM | Report abuse

The comments to this entry are closed.

 
 
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