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Personalized Forecasts

Featured Forecast

My Favorite Forecasts

    My Recent Locations

    • Today

      Sep 25

      64° /37°F
      Mostly sunny
      • Excellent
      • at the bus stop
      • T-storms: 1%
      • Precip: 9%
      • Wind Gust: 24 mph
    • Mon

      Sep 26

      67° /52°
      Mostly sunny
      • Excellent
      • at the bus stop
      • T-storms: 3%
      • Precip: 7%
      • Wind Gust: 8 mph
      More
    • Tue

      Sep 27

      68° /49°
      Rain in the morning
      • Good
      • at the bus stop
      • T-storms: 5%
      • Precip: 65%
      • Wind Gust: 8 mph
      More
    • Wed

      Sep 28

      71° /56°
      Partly sunny
      • Excellent
      • at the bus stop
      • T-storms: 0%
      • Precip: 19%
      • Wind Gust: 9 mph
      More
    • Thu

      Sep 29

      69° /56°
      Mostly cloudy
      • Excellent
      • at the bus stop
      • T-storms: 20%
      • Precip: 25%
      • Wind Gust: 8 mph
      More

    Day

    64°Hi RealFeel® 63° Precipitation 9%
    Mostly sunny
    • NW 12 mph
    • Gusts: 24 mph
    • Max UV Index: 4 (Moderate)
    • Thunderstorms: 1%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    37°Lo RealFeel® 39° Precipitation 9%
    Mainly clear and cold
    • NW 4 mph
    • Gusts: 12 mph
    • Max UV Index: N/A
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    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; 2:29 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 to end this weekend. More >

    Sun. Morning Bus Stop

    Sun. UV Index

    Sun. Wind Maps