 in the First Alert Weather Center. Gaithersburg, 77. Arlington, 76. Lanham, 75 degrees. Some parts of our area could fall to about 70 or even 68 in a few suburbs. We're brought to you by Longfence. Save 25% on decks, pavers, and fences. Six months, no payment, no interest. Conditions apply. Go to longfence.com.