Forecast: More Heat And Humidity To Close Out August

After one of the nicer weekends of the entire summer, it looks as though we're in for another heatwave. Remember, a heatwave is officially defined as three days in a row of 90 degrees or higher. This week I think we will see at least three — and more likely four — such days in at least part of the region.

A big high pressure system off the coast will bring up tropical warmth and create a very hot start to the workweek.

Wednesday, many school systems are opening for the year. This means hot classrooms when the kids are back in school. Temperatures outside on Wednesday will be approaching the mid-90s when you add in humidity. It will feel near 100 and I suspect some schools are actually going to push off the start from Wednesday. It's amazing to think we'll have a “snow” day here in August.

A frontal system will pass offshore Thursday night and put our temperatures back to more seasonable levels this weekend. However, there may be shower activity for the second part of the weekend.

The reality is this is still far enough in the future that I don't have a high confidence in the forecast beyond Saturday. Warm Septembers are certainly nothing new, but the preponderance of Septembers where the temperature is averaging above-average is becoming more routine.

There looks to be more warmer-than-average and more humid-than-average weather moving in after Labor Day, so when everyone is back at work and school, summer isn't going to be giving up easily again this year.

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Monday: Sunny and hot. Highs 86-90.

Monday Night: Partly cloudy and warm. Lows 65-72.

Tuesday: Sunshine and very hot. Humid. Highs 91-96, feeling 99-105.

Wednesday: Sunshine/humid. Mid-90s, cooler Cape and Islands.

Thursday: Sunshine and clouds, highs 88-94.

Friday: Sunshine and clouds. Less hot. Highs 75-80.