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.
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.