Capital Weather Gang: D.C.-area forecast: Humidity and temperatures drop today before a late-week heat wave

Tomorrow (Wednesday): Our best day of the week is right here in the middle. Skies are mostly sunny and humidity is low, with dew points in the mid-50s to low 60s. Temperatures are more comfortable in the middle to upper 80s (near to slightly below normal) with light breezes from the north. Confidence: High

Tomorrow night: Partly cloudy with just a little bit more humidity sneaking back into the area thanks to high pressure moving out into the Atlantic. Lows settle toward the upper 60s and lower 70s. Confidence: High

A Great Falls morning. (Andrew Pasko-Reader via Flickr)

A LOOK AHEAD

Thursday starts to feel a bit more uncomfortable as humidity creeps up higher under mostly sunny summer skies. Highs are only around 90 degrees, so it isn’t too oppressive, but the heat index heads more toward the middle 90s. Mostly clear Thursday night with moderate humidity and lows in the upper 60s to middle 70s (muggiest right in the city). Confidence: Medium-High

Friday finds our hot and humid conditions back in full force as highs go into the middle 90s and humidity lifts heat indexes to near 100 degrees. Mostly clear but muggy Friday night with lows ranging in the 70s — maybe just near 80 degrees right in the city. Confidence: Medium-High

Saturday looks like a scorcher with highs in the middle to upper 90s with a few spots potentially hitting the century mark for the first time in four years. Heat indexes seem likely to climb above 100 thanks to high humidity. We’ll have a slight chance of late afternoon and evening thunderstorms to break up the heat a bit. Saturday is muggy under partly cloudy skies with very warm lows from the upper 70s to the lower 80s. Sunday currently looks like a mostly sunny and quite hot start. Afternoon clouds could keep temperatures from reaching the upper 90s again, but we’ll have to watch the timing. Afternoon and evening thunderstorms could also offer some relief from the heat. Confidence: Medium