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FORECAST IN DETAIL
It’s all about small victories here in what is typically the steamiest stretch of the summer. So let’s celebrate today’s tolerable humidity and temperatures near or even slightly below average. Because tomorrow we start to ramp back up toward what might be the most intense heat wave of the season Friday through Monday.
Today (Wednesday): High pressure building in from the north and west provides partly to mostly sunny skies and somewhat lower humidity (dew points near 60 to the mid-60s). The heat relents a bit as well, with highs in the fairly comfortable mid-to-upper 80s, and light winds from the northeast at 5 to 10 mph. Confidence: High
Tonight: As winds start to come from the south, we’ll see the humidity levels gradually rising once again. Still, it’s only moderately muggy compared to what we’ve seen and what’s to come. Lows should make it down to the mid-to-upper 60s across the suburbs, probably holding up near 70 to the low 70s in the city, under mostly clear skies. Confidence: High
Tomorrow (Thursday): The heat and humidity are on the upswing once again. They’ll reach typical levels for mid-to-late July, with mostly sunny skies helping highs into the upper 80s to low 90s, and moderate-to-high humidity (dew points in the mid-60s to near 70). Winds stay light from the south around 5 to 10 mph. Confidence: High
Tomorrow night: That summery, muggy feel is back, although it won’t be quite as stifling as what’s on the way. Skies may turn partly cloudy as lows settle in the upper 60s to mid-70s. Confidence: High
A LOOK AHEAD
The most intense heat of the season thus far is on track for Friday through the weekend, accompanied by our usual high humidity. Highs all three days should head for the mid-90s to near 100, with afternoon heat indexes in the 105-110 range. The chance of a late afternoon or evening thunderstorm currently stands at around 20-30% each day. The excessive heat may linger into Monday. Confidence: Medium-High