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The Boston Globe

Sports

NOTEBOOK

At Head of the Charles, it was summer in October

Saturday’s unprecedented semi-tropical temperatures, which reached 76 degrees, lured a crowd estimated by a race official at 172,000 to the river banks — believed to be the most in history for the Head of the Charles regatta’s first day.

The previous temperature record of 68, which was set in 1979, was broken by 11 a.m., according to a race official.

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