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    • Early AM

      Sep 26

      53° Lo
      Partly to mostly cloudy
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Today

      Sep 26

      70° /58°
      Mostly cloudy
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Tue

      Sep 27

      73° /50°
      Clouds giving way to sun
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Wed

      Sep 28

      74° /60°F
      Chance of a little p.m. rain
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
    • Thu

      Sep 29

      71° /58°
      Mostly cloudy, showers around
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    65°/61° RealFeel® 65°/61°
    A chance of rain
    • 6 mph
    • Precipitation: 35%
    • Rain: 0 in
    • Snow: 0 in
    • Humidity: 96%
    • Cloud Cover: 93%
    • Dew Point: 61° F
    • Visibility: 10 mi

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/28/2015
    High 74° 71° N/A 81°
    Low 60° 55° N/A 63°

    Sunrise/Sunset

    • Sunrise: 7:03 AM
    • Sunset: 6:55 PM
    • Duration: 11:52 hr

    Moonrise/Moonset

    • Moonrise: 4:39 AM
    • Moonset: 5:54 PM
    • Duration: 13:15 hr
    Astronomy

    Gaithersburg Weather Report

    Crisp fall air to bring first frost of season to parts of northeastern US

    September 26, 2016; 1:29 AM ET

    Fall air has finally arrived in the northeastern United States and may yield the first frost of the season in parts of the region to end this weekend. More >

    Wed. Dust & Dander

    Wed. Wind Maps