PM Update: Heat Continues to Deliver

Sill warmer than normal tomorrow; PM storms?

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As has been the case on other hot days this summer, some patchy cloudiness helped keep temperatures from reaching their full potential in a few spots today. But all in all, it's a hot one, even if humidity levels are not terrible. Highs are generally ranging from near 90 into the low 90s, with some mid-90s possible before all is said and done. Look for dry conditions scattered cloudiness as we head into evening.

Through Tonight: Under partly cloudy skies, temperatures fall back into the mid-80s for sunset and ultimately to lows ranging from the upper 60s to lower 70s. Skies will be partly to mostly clear late night.

Tomorrow (Tuesday): Morning should be at least partly sunny, but clouds increase as the day goes on, and there's a risk of an isolated shower or storm during the afternoon or evening. It will still be hot though as highs rise from near 90 into the low 90s. Humidity levels that have been moderate will begin climbing toward high.

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90-Degree Days: Today is the 17th day this year -- 16th of the summer -- where temperatures rose to 90 or higher at National Airport (DCA). After a slow start, things have been rolling along since mid-July, with 14 occurrences since July 12, and seven so far in August. The rest of the week will bring a few more opportunities to add to those numbers. If you keep track, how many days has your location been above 90?