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Baltimore hits 90 degrees for a fourth day in year's longest heat wave

Temperatures briefly reached 90 degrees Friday afternoon at Baltimore/Washington International Thurgood Marshall Airport, a fourth consecutive day of heat and the longest stretch above 90 degrees this year.

September has kicked off meteorological fall with a heat wave not seen during the summer months, with highs of 94 degrees, 92 degrees, 94 degrees and now at least 90 degrees in its first four days.

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Factoring in humidity, the heat index reached the mid-90s Tuesday, Wednesday and Thursday.

Before this week, the longest string of days that surpassed 90 degrees at BWI was July 19-21, when the airport reached 97 degrees, 95 degrees and 91 degrees. Otherwise, throughout June, July and August, the airport never posted more than two days of 90+ degree heat in a row.

The summer weather is forecast to end Saturday. A cold front is forecast to drop down from the north, keeping temperatures in the lower- to mid-80s and below for the Labor Day holiday weekend.

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