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Personalized Forecasts

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    • Early AM

      Sep 26

      52° Lo
      Partly cloudy
      • Asthma
      • Weather
      • Hi RealFeel: 75°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Today

      Sep 26

      72° /59°
      Turning cloudy
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 72°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Tue

      Sep 27

      72° /51°F
      A bit of a.m. rain; clearing
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 76°
      • UV: 4 - Moderate
      • Air Qual.: Good
    • Wed

      Sep 28

      74° /61°
      Chance of a little p.m. rain
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 81°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Thu

      Sep 29

      69° /59°
      Mostly cloudy, a little rain
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 70°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More

    Day

    72°Hi RealFeel® 76° Precipitation 55%
    A little rain early in the morning; clouds giving way to sun
    • SW 6 mph
    • Gusts: 8 mph
    • Max UV Index: 5 (Moderate)
    • Thunderstorms: 6%
    • Precipitation: 0.02 in
    • Rain: 0.02 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0.5 hrs
    • Hours of Rain: 0.5 hrs

    Night

    51°Lo RealFeel® 53° Precipitation 21%
    Clear to partly cloudy
    • WNW 4 mph
    • Gusts: 6 mph
    • Max UV Index: N/A
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/27/2015
    High 72° 76° N/A 73°
    Low 51° 55° N/A 61°

    Sunrise/Sunset

    • Sunrise: 7:00 AM
    • Sunset: 6:55 PM
    • Duration: 11:55 hr

    Moonrise/Moonset

    • Moonrise: 3:39 AM
    • Moonset: 5:19 PM
    • Duration: 13:40 hr
    Astronomy

    Greenbelt 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 >

    Tue. Air Quality

    Tue. Asthma Risk

    Tue. UV Index