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      Elev 63 ft, 42.834 °N 71.008 °W

      Merrimac, MA

      Merrimacport Station42°
      Updated: 8:50 PM EDT on October 10, 2026 (GMT -4)
      4 minutes ago
      61°
      42°
      42
      Feels Like 42
      Clear
      N
      0
      Similar temperature is expected tomorrow
      Wundermap

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       Wundermap
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Tonight
        Sat 10/10
        Low 40°f
         4% Precip. / 0 in
        A few clouds. Low near 40F. Winds light and variable.
        Tomorrow
        Sun 10/11
        High 62°f
         23% Precip. / 0 in
        Cloudy. High 62F. Winds SSW at 5 to 10 mph.
        Tomorrow night
        Sun 10/11
        Low 51°f
         98% Precip. / 0.62 in
        Rain likely. Potential for heavy rainfall. Low 51F. Winds light and variable. Chance of rain 100%. Rainfall near a half an inch.
        Hourly Forecast
        Now
        44°
        9PM
        44°
        10PM
        43°
        11PM
        43°
        12AM
        44°
        1AM
        42°
        2AM
        42°
        3AM
        42°
        4AM
        43°
        5AM
        41°
        6AM
        41°
        6:52AM
        Sunrise
        7AM
        42°
        8AM
        45°
        9AM
        49°
        10AM
        54°
        11AM
        57°
        12PM
        59°
        1PM
        60°
        2PM
        61°
        3PM
        61°
        4PM
        60°
        5PM
        59°
        6PM
        57°
        6:07PM
        Sunset
        7PM
        45%
        56°
        8PM
        71%
        55°
        Precipitation
        71%
        Pollen
        None
        Air Quality
        29
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.48 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point37°F
        5. Humidity 78%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KLWM Station History
        Almanac for October 10, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 61°F 64°F 88°F 1949
        4. Low 42°F 42°F 27°F 1993
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.3 in -
        7. Snow 0 in 0 in -
        Almanac for October 11, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 62°F 64°F 84°F
        4. Low 40°F 41°F 22°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:51 AM 6:09 PM
        3. Civil Twilight 6:23 AM 6:38 PM
        4. Nautical Twilight 5:50 AM 7:10PM
        5. Astronomical Twilight 5:17 AM 7:43 PM
        1. Length of Visible Light 12h 14m
        2. Length of Day 11h 18m
        3. Tomorrow will be 2 minutes 50 seconds shorter
        1. Moon 6:51 AM 5:50 PM
        2. New0% of the Moon is Illuminated
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 26
        Full Moon
        Nov 1
        Waning Half Last Qtr
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