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    • Today

      Sep 25

      64° /41°F
      Mostly sunny
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Mon

      Sep 26

      66° /49°
      Sunny to partly cloudy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Tue

      Sep 27

      68° /52°
      Periods of rain
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Wed

      Sep 28

      71° /55°
      Clouds and sunshine
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      68° /55°
      Mostly cloudy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    Sunday
    1pm
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    8pm
    Forecast Mostly Sunny Partly Sunny Partly Sunny Mostly Sunny Mostly Sunny Sunny Clear Mostly Clear
    Temp (°F) 60° 62° 63° 64° 63° 61° 59° 56°
    RealFeel® 60° 61° 63° 62° 60° 58° 58° 56°
    Wind (mph) 14 NW 14 NW 13 NW 13 NW 12 NW 9 NW 6 NW 4 NW
    precip
    1pm
    2pm
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    8pm
    Rain
    1%
    0%
    0%
    0%
    0%
    0%
    0%
    1%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    1pm
    2pm
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    4pm
    5pm
    6pm
    7pm
    8pm
    UV Index 4 4 3 2 1 0 0 0
    Cloud Cover 17% 37% 32% 21% 10% 3% 0% 11%
    Humidity 32% 30% 30% 29% 29% 33% 39% 43%
    Dew Point 30° 30° 31° 31° 30° 32° 34° 34°
    Temp °F
    1pm
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    65° 60° 55°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/25/2015
    High 64° 69° N/A 69°
    Low 41° 48° N/A 52°

    Sunrise/Sunset

    • Sunrise: 6:37 AM
    • Sunset: 6:36 PM
    • Duration: 11:59 hr

    Moonrise/Moonset

    • Moonrise: 1:07 AM
    • Moonset: 3:46 PM
    • Duration: 14:39 hr
    Astronomy

    Londonderry Weather Report

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

    September 25, 2016; 10:29 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 >

    Sun. Pollen

    Sun. Dust & Dander

    Sun. Wind Maps