Arlington County, VA

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From the Forecaster

3-Day Forecast 9/15-9/17

Created by the NWS Baltimore MD/Washington WFO

Tuesday, September 15th, 2026: Canadian high pressure will bring another day of cooler temperatures and less humidity. Chances for showers and thunderstorms return to the mountains on Thursday.

Weather forecast graphic from National Weather Service Baltimore/Washington DC set against a background of lush, green forested hills under a partly cloudy sky. Header: Tuesday, September 15, 2026 Today (Tuesday): Highs 73–81°F, Lows 54–61°F. Sunny icon with text "Low Humidity Continues." Wednesday: Highs 79–89°F, Lows 59–67°F. Sunny icon with text "Warmer." Thursday: Highs 79–91°F, Lows 61–71°F. Sun with cloud and lightning icon with text "Even Warmer, Mountain T-Storms." Header: Monday, September 14, 2026 (top left). Today: Highs 66–82°F, Lows 48–58°F. Sunny icon labeled "Cooler & Breezy." Tuesday: Highs 73–83°F, Lows 54–62°F. Sunny icon labeled "Low Humidity Continues." Wednesday: Highs 79–88°F, Lows 59–67°F. Sunny icon labeled "Warmer." Footer: NOAA and National Weather Service Baltimore/Washington DC logos along the bottom edge.
Baltimore MD/Washington Area Forecast Discussion

Seven-day Weather Risk Overview

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