 But we'll keep that pattern going with afternoon storms, heat and humidity through Friday and Saturday. I'm 7 News Meteorologist Brian Van De Graaff in the Forest Alert Weather Center. 70 in Arlington, 70 in Lanham, 72 in Gaithersburg. This is WTOP News. Facts Matter. This hour of news is brought to you by Lido Pizza. Lido Pizza never cuts corners.