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    • Tonight

      Sep 24

      42° Lo
      Clear and chilly
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Sun

      Sep 25

      63° /41°
      Mostly sunny
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Mon

      Sep 26

      65° /49°
      Sunny to partly cloudy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Tue

      Sep 27

      67° /52°F
      Periods of rain
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Wed

      Sep 28

      72° /52°
      Clouds and sunshine
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    61°/56° RealFeel® 61°/56°
    Partly to mostly cloudy
    • 4 mph
    • Precipitation: 25%
    • Rain: 0 in
    • Snow: 0 in
    • Humidity: 91%
    • Cloud Cover: 64%
    • Dew Point: 56° F
    • Visibility: 7 mi

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/27/2015
    High 67° 68° N/A 72°
    Low 52° 48° N/A 39°

    Sunrise/Sunset

    • Sunrise: 6:39 AM
    • Sunset: 6:33 PM
    • Duration: 11:54 hr

    Moonrise/Moonset

    • Moonrise: 3:10 AM
    • Moonset: 5:01 PM
    • Duration: 13:51 hr
    Astronomy

    Londonderry Weather Report

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

    September 24, 2016; 3:04 PM 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 this weekend. More >

    Tue. Dust & Dander

    Tue. Wind Maps