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    • Tonight

      Sep 29

      62° Lo
      Breezy with rain and drizzle
      • Asthma
      • Weather
      • Hi RealFeel: 68°
      • UV: 2 - Low
      • Air Qual.: Good
      More
    • Fri

      Sep 30

      67° /63°F
      Cloudy, showers; breezy
      • At Risk
      • weather for asthma
      • Hi RealFeel: 66°
      • UV: 2 - Low
      • Air Qual.: Good
    • Sat

      Oct 1

      74° /62°
      A brief shower or two
      • At Risk
      • weather for asthma
      • Hi RealFeel: 77°
      • UV: 2 - Low
      • Air Qual.: Good
      More
    • Sun

      Oct 2

      76° /61°
      Mostly cloudy
      • Neutral
      • weather for asthma
      • Hi RealFeel: 78°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Mon

      Oct 3

      75° /59°
      Mostly sunny and pleasant
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 79°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More

    Day

    67°Hi RealFeel® 66° Precipitation 70%
    Cloudy and breezy with showers
    • NE 16 mph
    • Gusts: 26 mph
    • Max UV Index: 1 (Low)
    • Thunderstorms: 20%
    • Precipitation: 0.19 in
    • Rain: 0.19 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 2.5 hrs
    • Hours of Rain: 2.5 hrs

    Night

    63°Lo RealFeel® 61° Precipitation 65%
    Mostly cloudy with a couple of showers
    • NE 7 mph
    • Gusts: 13 mph
    • Max UV Index: N/A
    • Thunderstorms: 29%
    • Precipitation: 0.16 in
    • Rain: 0.16 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 3 hrs
    • Hours of Rain: 3 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/30/2015
    High 67° 75° N/A 77°
    Low 63° 54° N/A 63°

    Sunrise/Sunset

    • Sunrise: 7:04 AM
    • Sunset: 6:51 PM
    • Duration: 11:47 hr

    Moonrise/Moonset

    • Moonrise: 6:35 AM
    • Moonset: 6:55 PM
    • Duration: 12:20 hr
    Astronomy

    Chevy Chase Section Three Weather Report

    Persistent rain to raise flood risk in part of northeastern US

    September 29, 2016; 6:05 PM ET

    Persistent downpours will raise the flood risk in part of the mid-Atlantic into Friday, while rain will spread over the balance of the northeastern United States into the weekend. More >

    Fri. Air Quality

    Fri. Asthma Risk

    Fri. UV Index