Forecast: Heat wave reaches day 5 and counting
Heat index to touch triple-digits. Temperature too?
Today: Partly sunny, hot & humid. Mid-90s. | Tonight: Partly cloudy & steamy. 70s. | Tomorrow: Partly sunny, humid & really hot. 30% chance of p.m. storms. Mid-90s to near 100. | A Look Ahead | Get Express Forecast by E-mail
FORECAST IN DETAIL
Welcome to day 5 of this June heat wave. Friday was the last time the high at Reagan National failed to top 90, and highs may very well continue at or above 90 straight through the weekend, with Friday presenting the best hope for breaking the streak. In addition to being slightly cooler, Friday may also give us somewhat of a break in the humidity. But it's short-lived relief as heat and humidity build again this weekend. When's the best chance for a thunderstorm? Let's get to the details...
Today (Wednesday): The window of semi-tolerable heat this morning closes quickly as temperatures climb to near 90 by late morning. Afternoon highs should make it solidly into the mid-90s with the humidity making it feel like 100 or so. Don't hold your breath for a cooling late-afternoon or evening thunderstorm. Chances are less than 20%. Confidence: Medium-High
The forecast continues after the poll...
Tonight: It's a partly cloudy and steamy evening with humidity locked in place as temperatures fall into and through the 80s, with just a slight chance of an evening storm. Lows should stall in the 70s most spots with partly cloudy skies. Confidence: Medium-High
Headed to see Strasburg pitch today? Check in with NatCast. And keep reading for the forecast through the weekend...
Tomorrow (Thursday): If anything, tomorrow might be hotter than today. Highs in the mid-to-upper 90s are likely with 100 within reach as we continue partly sunny and humid. The afternoon heat index will probably reach the 100-105 range in some locations. Chances for afternoon or evening storms are better than today -- around 30% -- as a cold front approaches. Confidence: Medium
Tomorrow Night: Evening thunderstorm chances continue around 30% under partly cloudy skies. A bit less humid air begins to move in during the evening and overnight after the cold front passes through. Lows are still very mild, in the 70s. Confidence: Medium
How much cooler and less humid are we talking for Friday? The strength of summer cold fronts can be difficult to gauge. But at the very least it should be several degrees cooler -- highs probably near 90 under partly to mostly sunny skies -- with humidity down to the moderate range. Confidence: Medium
We head right back into heat wave territory this weekend. Humidity edges upward Saturday with highs likely in the low 90s. The heat and humidity really come roaring back Sunday when highs could return to the mid-to-upper 90s. (Is this fun or what?... um, yeah, or what.) Both days should be partly sunny with morning lows in the upper 60s to mid-70s, and what looks to be a 20-30% chance of afternoon/evening storms. Confidence: Medium
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