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    • Tonight

      Sep 28

      48° Lo
      Mostly cloudy
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      63° /48°
      Mostly cloudy and windy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Fri

      Sep 30

      59° /50°F
      Cloudy with a shower or two
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Sat

      Oct 1

      58° /53°
      Cloudy with a little rain
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Sun

      Oct 2

      62° /53°
      Occasional rain and drizzle
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    59°Hi RealFeel® 52° Precipitation 58%
    Cloudy and windy with a brief shower or two
    • NE 17 mph
    • Gusts: 29 mph
    • Max UV Index: 1 (Low)
    • Thunderstorms: 20%
    • Precipitation: 0.09 in
    • Rain: 0.09 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 2 hrs
    • Hours of Rain: 2 hrs

    Night

    50°Lo RealFeel® 40° Precipitation 75%
    Overcast and breezy with a couple of showers, then a steadier rain
    • NE 14 mph
    • Gusts: 21 mph
    • Max UV Index: N/A
    • Thunderstorms: 20%
    • Precipitation: 0.19 in
    • Rain: 0.19 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 3.5 hrs
    • Hours of Rain: 3.5 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/30/2015
    High 59° 67° N/A 76°
    Low 50° 46° N/A 53°

    Sunrise/Sunset

    • Sunrise: 6:42 AM
    • Sunset: 6:27 PM
    • Duration: 11:45 hr

    Moonrise/Moonset

    • Moonrise: 6:11 AM
    • Moonset: 6:31 PM
    • Duration: 12:20 hr
    Astronomy

    Londonderry Weather Report

    Persistent rain to raise flood risk in part of northeastern US late this week

    September 28, 2016; 6:05 PM ET

    Rain will spread over much of the northeastern U.S. into the weekend, but persistent downpours will raise the flood risk in part of the mid-Atlantic. More >

    Fri. Dust & Dander

    Fri. Wind Maps