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    1 - 5 of 90 days | All 90 days
    Next 5 Days
    • Today

      Sep 25

      64° /37°F
      Mostly sunny
    • Mon

      Sep 26

      66° /53°
      Mostly sunny
      More
    • Tue

      Sep 27

      68° /49°
      Rain in the morning
      More
    • Wed

      Sep 28

      72° /56°
      Times of clouds and sun
      More
    • Thu

      Sep 29

      68° /56°
      Rain and drizzle possible
      More
    Sunday
    3pm
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    5pm
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    10pm
    Forecast Partly Sunny Mostly Sunny Sunny Sunny Clear Mostly Clear Mostly Clear Mostly Clear
    Temp (°F) 63° 64° 63° 61° 58° 55° 52° 51°
    RealFeel® 63° 63° 60° 58° 55° 52° 50° 49°
    Wind (mph) 12 NW 12 NW 12 NW 9 NW 8 NW 7 NW 6 NW 5 NW
    precip
    3pm
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    5pm
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    10pm
    Rain
    0%
    0%
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    0%
    1%
    1%
    1%
    Snow
    0%
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    0%
    0%
    0%
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    Ice
    0%
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    0%
    SKY
    3pm
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    5pm
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    10pm
    UV Index 3 2 1 0 0 0 0 0
    Cloud Cover 37% 20% 5% 0% 0% 11% 11% 11%
    Humidity 29% 29% 30% 35% 43% 48% 53% 61%
    Dew Point 30° 31° 31° 33° 35° 35° 36° 38°
    Temp °F
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    65° 60° 55° 50°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/25/2015
    High 64° 70° 88° (2010) 69°
    Low 37° 45° 25° (1950) 47°

    Sunrise/Sunset

    • Sunrise: 6:37 AM
    • Sunset: 6:37 PM
    • Duration: 12:00 hr

    Moonrise/Moonset

    • Moonrise: 1:08 AM
    • Moonset: 3:47 PM
    • Duration: 14:39 hr
    Astronomy

    Merrimack Weather Report

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

    September 25, 2016; 5:09 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 >