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Posted at 05:00 AM ET, 06/10/2011

Forecast: Heat weakens heading into the weekend, but shower and storm threat increases

Code orange air quality today (Unhealthy for sensitive groups)

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

 
Still hot but up 1 since it won't be historic heat. Drink water, take it slow still & prepare for p.m. storm threats.
 
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EXPRESS FORECAST

Today: Mostly sunny early, scattered t’storms late. Near 90 to mid-90s. | Tonight: Mostly cloudy, chance of showers and t’storms. Upper 60s to low 70s. | Tomorrow: Mostly cloudy with showers and t’storms. Mid-to-upper 80s. | Sunday: Mostly cloudy, chance of showers and t’storms. Mid-to-upper 80s. | Get Express Forecast by E-mail

FORECAST IN DETAIL

What’s this? Temperatures below 100? While 90s today & 80s this weekend may feel like a break to your body over the coming days, make no mistake it will be summerlike. Play it safe and take care of your body. At least the heat wave peaked already, right? Humidity, storms and high temperatures really do remain in the picture until Sunday night. Looks good for the start of the workweek next week, though!


Radar & lightning: Latest regional 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 (Friday): Mostly sunny, at least early, but we’ll have an increasing-with-time chance of showers and storms as the early afternoon (30% chance) progresses into evening (60% chance). Storms could again approach severe levels but heavy rain may be the key feature. Highs in the lower 90s appear most probable, but clouds could hold us “only” around 90; conversely we may hit the mid-90s with more sun than I currently expect. A light north breeze won’t do much except keep dewpoints below the ultra-muggy 70 degree “tropical airmass” level, though heat indices in the area could still bump around 100F near late afternoon. Confidence: Medium-High

Tonight: Mostly cloudy with a continuing (50%) chance of thundershowers. Lowsreach the lower 70s downtown, perhaps upper 60s outside the Beltway heat island. Just be aware mugginess may choke you a bit as it increases starting around sunset. Dewpoints likely getting tropical, as they head above the 70 degree mark in many locations. Confidence: Medium

Keep reading for the forecast through the beginning of next week...

Tomorrow (Saturday): Clouds could stick around, filtering the sunshine. Muggy, hazy air prevails — looking milky because of all the water vapor and pollution stagnating in the air. Showers and thunderstorms are possible as the afternoon wears on (60% chance). Highs in the mid-to-upper 80s may look cooler on paper, but I believe seriously muggy air will prevail in making it very uncomfortable. No real break from the sweating! Confidence: Medium

Tomorrow night: Mostly cloudy with a continued decent chance of showers and thunderstorms. Another cold front approaches the area which ultimately boots the one draped nearby — but it mainly brings rain risks, not much cold air. Lows are similar to tonight, again in the lower 70s downtown, with upper 60s in the suburbs. Confidence: Medium

Sunday: It’s still mostly cloudy, while east of us — for the most part — a few showers and thunderstorms may pester those who escaped to the beach. Timing is still questionable as to whether or not the front fully clears our area or not — so I should still keep a 30% chance of showers around DC. Probably 50% chance as you go east of town. Despite the clouds and showers, the June sun still gets our high temperatures into the semi-muggy mid-to-upper 80s. Confidence: Low-Medium

A LOOK AHEAD

Sunday night: Partly to mostly cloudy skies should do it, with still a slight risk of a shower early. But hopefully the front is through the area and we actually start feeling light northwesterly breezes reduce the humidity levels. Looks like the entire region may bottom in the 60s overnight! Confidence: Low-Medium

Of course the weather improves headed into the workweek on Monday and Tuesday. Both days look to be mostly sunny with lower dewpoints aiding in comfort levels. Highs in the low-to-mid 80s should feel almost grand. Just lather on some sunscreen if going out during lunchtime. Solar noon around 1:10 p.m. is a powerful source of UV rays here near the summer solstice. Confidence: Medium

By Camden Walker  |  05:00 AM ET, 06/10/2011

Categories:  Forecasts

 
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