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    • Early AM

      Sep 25

      42° Lo
      Clear
      • 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
    • Today

      Sep 25

      64° /41°
      Mostly sunny
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Mon

      Sep 26

      66° /51°F
      Sunny to partly cloudy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • 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

      72° /52°
      Times of clouds and sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    Monday
    2am
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    Forecast Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Sunny Mostly Sunny Mostly Sunny
    Temp (°F) 46° 45° 44° 44° 43° 44° 41° 48°
    RealFeel® 48° 47° 46° 46° 46° 46° 44° 52°
    Wind (mph) 1 NW 1 NW 1 NW 1 NW 1 NW 2 NW 2 NW 2 WNW
    precip
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    Rain
    0%
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    Snow
    0%
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    0%
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    Ice
    0%
    0%
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    0%
    SKY
    2am
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    6am
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    9am
    UV Index 0 0 0 0 0 0 0 1
    Cloud Cover 11% 11% 11% 11% 11% 11% 10% 10%
    Humidity 73% 72% 72% 74% 73% 79% 85% 68%
    Dew Point 38° 36° 36° 36° 35° 38° 37° 38°
    Temp °F
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    50° 45° 40°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/26/2015
    High 66° 68° N/A 67°
    Low 51° 48° N/A 44°

    Sunrise/Sunset

    • Sunrise: 6:38 AM
    • Sunset: 6:34 PM
    • Duration: 11:56 hr

    Moonrise/Moonset

    • Moonrise: 2:08 AM
    • Moonset: 4:26 PM
    • Duration: 14:18 hr
    Astronomy

    Derry Weather Report

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

    September 25, 2016; 1:09 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 this weekend. More >

    Mon. Pollen

    Mon. Dust & Dander

    Mon. Wind Maps