Hottest of the Summer

Hot and humid conditions are peaking over the area today.

Full sunshine and a light westerly wind first this morning have quickly boosted temperatures out of the 70s and into the 80s…with some spots already into the middle and upper 80s as of mid-morning. That westerly wind is a perfect set-up for Cape Cod to really heat up as the offshore flow precludes any cooling marine influence and allows the atmosphere to maximize its available heat.

While the breeze will eventually become a bit more southwesterly, which will slow and eventually cap the temperature rise, the damage has been done and we can expect readings to climb to the upper 80s to middle 90s across the Cape today.

With dew point values holding in the 70s, Heat Index values will approach or exceed 100F at times (the Heat Index was 95F at Hyannis as of 9AM), making it dangerously hot for those working outdoors during the late morning through mid-afternoon hours.

For what it’s worth, short-term, high-resolution model guidance shows a midday temperature of 94F at Hyannis:

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