021 AWUS81 KLWX 290701 RWSLWX DCZ001-MDZ003>006-008-011-013-014-016>018-501>510-VAZ025>031- 036>040-050-051-053>057-501>508-526-527-WVZ050>053-055-501>506- 292200- Regional Weather Summary National Weather Service Baltimore MD/Washington DC 301 AM EDT Mon Jun 29 2026 Here is a look at the weather features that will affect the region over the next several days. A significant warming trend will ensue this week, with temperatures and heat indices potentially nearing or exceeding 100 degrees by the middle to end of the week. The excessive heat looks to continue into the Independence Day holiday with increasing thunderstorm chances as well. $$