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    Previous 5 Days Next 5 Days
    • Thu

      Sep 29

      68° /49°F
      Times of clouds and sun
    • Fri

      Sep 30

      71° /47°
      Partly sunny
      More
    • Sat

      Oct 1

      69° /50°
      Sunny and nice
      More
    • Sun

      Oct 2

      74° /47°
      Mostly sunny
      More
    • Mon

      Oct 3

      66° /50°
      Plenty of sunshine
      More

    Day

    68°Hi RealFeel® 68° Precipitation 17%
    Times of clouds and sun
    • ENE 6 mph
    • Gusts: 9 mph
    • Max UV Index: 3 (Moderate)
    • Thunderstorms: 2%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    49°Lo RealFeel® 47° Precipitation 55%
    Clear to partly cloudy with a passing shower late
    • NE 5 mph
    • Gusts: 7 mph
    • Max UV Index: N/A
    • Thunderstorms: 20%
    • Precipitation: 0.02 in
    • Rain: 0.02 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0.5 hrs
    • Hours of Rain: 0.5 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/29/2015
    High 68° 68° 85° (1948) 83°
    Low 49° 44° 27° (1957) 61°

    Sunrise/Sunset

    • Sunrise: 6:42 AM
    • Sunset: 6:30 PM
    • Duration: 11:48 hr

    Moonrise/Moonset

    • Moonrise: 5:12 AM
    • Moonset: 6:04 PM
    • Duration: 12:52 hr
    Astronomy

    Merrimack Weather Report

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

    September 24, 2016; 9:32 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 >