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      Elev 63 ft, 42.834 °N 71.008 °W

      Merrimac, MA

      Merrimacport Station45°
      Updated: 4:27 AM EDT on October 29, 2026 (GMT -4)
      8 minutes ago
      70°
      42°
      45
      Feels Like 45
      Partly Cloudy
      N
      4
      Higher temperature is expected today
      Wundermap

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       Wundermap
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Today
        Thu 10/29
        High 70°f
         3% Precip. / 0 in
        Plenty of sunshine. Warm. High around 70F. Winds SW at 10 to 15 mph.
        Tonight
        Thu 10/29
        Low 54°f
         20% Precip. / 0 in
        Partly cloudy early followed by cloudy skies overnight. Low 54F. Winds SW at 5 to 10 mph.
        Tomorrow
        Fri 10/30
        High 67°f39°f
         6% Precip. / 0 in
        Partly cloudy skies. Warm. High 67F. Winds WNW at 10 to 20 mph.
        Hourly Forecast
        Now
        46°
        5AM
        46°
        6AM
        45°
        7AM
        45°
        7:14AM
        Sunrise
        8AM
        44°
        9AM
        48°
        10AM
        53°
        11AM
        58°
        12PM
        62°
        1PM
        66°
        2PM
        68°
        3PM
        68°
        4PM
        68°
        5PM
        66°
        5:40PM
        Sunset
        6PM
        62°
        7PM
        61°
        8PM
        59°
        9PM
        58°
        10PM
        57°
        11PM
        57°
        12AM
        56°
        1AM
        56°
        2AM
        56°
        3AM
        56°
        4AM
        55°
        Precipitation
        20%
        Pollen
        Ragweed Pollen
        Low
        Air Quality
        20
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.27 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point41°F
        5. Humidity 81%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KLWM Station History
        Almanac for October 29, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 70°F 57°F 81°F 2023
        4. Low 42°F 35°F 25°F 2013
        5. Rain/Snow Depth
        6. Precipitation 0 in 4.3 in -
        7. Snow 0 in 0 in -
        Almanac for October 30, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 67°F 57°F 79°F
        4. Low 45°F 35°F 22°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:14 AM 5:40 PM
        3. Civil Twilight 6:45 AM 6:09 PM
        4. Nautical Twilight 6:11 AM 6:42PM
        5. Astronomical Twilight 5:39 AM 7:15 PM
        1. Length of Visible Light 11h 24m
        2. Length of Day 10h 25m
        3. Tomorrow will be 2 minutes 36 seconds shorter
        1. Moon 8:10 PM 11:39 AM
        2. Waning Gibbous80% of the Moon is Illuminated
        Nov 1
        Waning Half Last Qtr
        Nov 9
        New Moon
        Nov 17
        Waxing Half First Qtr
        Nov 24
        Full Moon
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