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    • Today

      Sep 29

      69° /62°F
      Heavy rain and a thunderstorm
      • Very Unlikely
      • for a snow day
      • Snow: 0%
      • Ice: 0%
      • Snow: 0 in
    • Fri

      Sep 30

      66° /63°
      Cloudy with spotty showers
      • Very Unlikely
      • for a snow day
      • Snow: 0%
      • Ice: 0%
      • Snow: 0 in
      More
    • Sat

      Oct 1

      73° /60°
      Mostly cloudy and warmer
      • Very Unlikely
      • for a snow day
      • Snow: 0%
      • Ice: 0%
      • Snow: 0 in
      More
    • Sun

      Oct 2

      78° /58°
      Mainly cloudy, showers around
      • Very Unlikely
      • for a snow day
      • Snow: 0%
      • Ice: 0%
      • Snow: 0 in
      More
    • Mon

      Oct 3

      75° /55°
      Partly sunny and beautiful
      • Very Unlikely
      • for a snow day
      • Snow: 0%
      • Ice: 0%
      • Snow: 0 in
      More

    Day

    69°Hi RealFeel® 66° Precipitation 76%
    Heavy rain and a t-storm; windy and humid; watch for flooding on streets and poor drainage areas
    • E 17 mph
    • Gusts: 31 mph
    • Max UV Index: 1 (Low)
    • Thunderstorms: 60%
    • Precipitation: 1.05 in
    • Rain: 1.05 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 7 hrs
    • Hours of Rain: 7 hrs

    Night

    62°Lo RealFeel® 56° Precipitation 75%
    Overcast and windy with a little rain
    • ENE 16 mph
    • Gusts: 26 mph
    • Max UV Index: N/A
    • Thunderstorms: 24%
    • Precipitation: 0.17 in
    • Rain: 0.17 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 2.5 hrs
    • Hours of Rain: 2.5 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/29/2015
    High 69° 70° N/A 79°
    Low 62° 54° N/A 68°

    Sunrise/Sunset

    • Sunrise: 7:04 AM
    • Sunset: 6:53 PM
    • Duration: 11:49 hr

    Moonrise/Moonset

    • Moonrise: 5:38 AM
    • Moonset: 6:25 PM
    • Duration: 12:47 hr
    Astronomy

    Gaithersburg Weather Report

    Persistent rain to raise flood risk in part of northeastern US late this week

    September 29, 2016; 2:55 AM ET

    Rain will spread over much of the northeastern U.S. into the weekend, but persistent downpours will raise the flood risk in part of the mid-Atlantic. More >

    48 Hour Precipitation Forecast

    Thu. Snow Day Potential