BWI Marshall Airport hit a low of 58 degrees early Tuesday morning, its coldest since June 18 and the heat wave that followed. But the heat is expected to return to start the weekend.
A high pressure system is expected to settle over the region much like one did last week. Hot, humid weather will settle in Thursday.
Friday and Saturday, temperatures are forecast in the upper 90s. Before we get there, weather is expected to be pleasant with highs in the lower 80s and breezy winds Tuesday and Wednesday.
Friday's temperature is unlikely to threaten a record of 105, the hottest June temperature on record at BWI. Saturday, the record high is 100 degrees and could potentially be broken.
June has already seen seven days above 90 degrees, and another seven days below 80 degrees, as measured at BWI.
The end-of-month heat wave appears likely to push the monthly average temperature above normal, though. At 72.5 degrees through Monday, the average temperature for the month was 0.8 degrees warmer than normal, after spending most of the month below normal.
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