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      Elev 98 ft, 42.843 °N 70.981 °W

      Merrimac, MA

      Mon, Oct 19, 2026
      Today
      Mon 10/19
      High 59°f
      4% Precip. / 0 in
      Sunny to partly cloudy. High 59F. Winds S at 5 to 10 mph.
      Tonight
      Mon 10/19
      Low 39°f
      8% Precip. / 0 in
      Partly cloudy skies. Low 39F. Winds light and variable.
      Sunrise 7:02 AM
      Sunset 5:54 PM
      Moonrise 2:55 PM
      Moonset -
      Waxing Gibbous, 60% visible
      Hourly Forecast
      Now
      35°
      4AM
      35°
      5AM
      35°
      6AM
      35°
      7AM
      36°
      7:02AM
      Sunrise
      8AM
      39°
      9AM
      43°
      10AM
      49°
      11AM
      53°
      12PM
      55°
      1PM
      57°
      2PM
      58°
      3PM
      58°
      4PM
      57°
      5PM
      55°
      5:55PM
      Sunset
      6PM
      51°
      7PM
      48°
      8PM
      46°
      9PM
      45°
      10PM
      44°
      11PM
      43°
      12AM
      43°
      1AM
      42°
      2AM
      41°
      3AM
      40°
      Time Conditions Temp. Feels Like Precip Amount Cloud Cover Dew Point Humidity Wind Pressure
      4:00 am
      Clear
      35°F 35°F 3% 0in 5% 33°F 93% 1 mph SW 30.53in
      5:00 am
      Clear
      35°F 35°F 3% 0in 7% 33°F 94% 1 mph SW 30.53in
      6:00 am
      Clear
      35°F 35°F 3% 0in 8% 33°F 93% 1 mph SW 30.52in
      7:00 am
      Clear
      36°F 36°F 3% 0in 10% 34°F 95% 2 mph WSW 30.52in
      8:00 am
      Sunny
      39°F 39°F 2% 0in 10% 36°F 89% 2 mph W 30.51in
      9:00 am
      Sunny
      43°F 43°F 1% 0in 9% 38°F 81% 1 mph WSW 30.51in
      10:00 am
      Sunny
      49°F 49°F 1% 0in 5% 38°F 66% 1 mph W 30.5in
      11:00 am
      Sunny
      53°F 53°F 0% 0in 14% 38°F 57% 2 mph SSE 30.49in
      12:00 pm
      Sunny
      55°F 55°F 0% 0in 10% 38°F 52% 3 mph ESE 30.46in
      1:00 pm
      Sunny
      57°F 57°F 0% 0in 15% 39°F 50% 5 mph ESE 30.42in
      2:00 pm
      Sunny
      58°F 57°F 0% 0in 19% 39°F 49% 6 mph ESE 30.39in
      3:00 pm
      Sunny
      58°F 58°F 0% 0in 17% 40°F 51% 6 mph ESE 30.37in
      4:00 pm
      Mostly Sunny
      57°F 56°F 0% 0in 28% 40°F 53% 6 mph ESE 30.36in
      5:00 pm
      Sunny
      55°F 53°F 2% 0in 19% 41°F 60% 5 mph ESE 30.34in
      6:00 pm
      Mostly Clear
      51°F 50°F 5% 0in 23% 41°F 71% 3 mph E 30.33in
      7:00 pm
      Partly Cloudy
      48°F 48°F 6% 0in 35% 42°F 80% 2 mph ENE 30.32in
      8:00 pm
      Partly Cloudy
      46°F 46°F 7% 0in 39% 42°F 87% 2 mph ENE 30.31in
      9:00 pm
      Partly Cloudy
      45°F 45°F 7% 0in 33% 42°F 89% 1 mph NE 30.29in
      10:00 pm
      Partly Cloudy
      44°F 44°F 8% 0in 39% 41°F 89% 2 mph NNE 30.28in
      11:00 pm
      Partly Cloudy
      43°F 42°F 8% 0in 37% 41°F 90% 3 mph N 30.26in
      Additional Conditions
      1. Pressure 30.54 in
      2. Visibility 10 miles
      3. Clouds Clear
      4. Dew Point33°F
      5. Humidity 92%
      6. Rainfall 0 in
      7. Snow Depth 0 in
      KLWM Station History
      Almanac for October 19, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 59°F 61°F 84°F 1965
      4. Low 33°F 38°F 22°F 1986
      5. Rain/Snow Depth
      6. Precipitation 0 in 3.8 in -
      7. Snow 0 in 0 in -
      Almanac for October 20, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 64°F 60°F 80°F
      4. Low 39°F 38°F 25°F
      Astronomy
      1. Sun Rise Set
      2. Actual Time 7:02 AM 5:54 PM
      3. Civil Twilight 6:33 AM 6:23 PM
      4. Nautical Twilight 6:00 AM 6:56PM
      5. Astronomical Twilight 5:27 AM 7:29 PM
      1. Length of Visible Light 11h 50m
      2. Length of Day 10h 52m
      3. Tomorrow will be 2 minutes 46 seconds shorter
      1. Moon 2:55 PM -
      2. Waxing Gibbous60% of the Moon is Illuminated
      Oct 26
      Full Moon
      Nov 1
      Waning Half Last Qtr
      Nov 9
      New Moon
      Nov 17
      Waxing Half First Qtr
      Nearby Weather Stations
      Station Location
      Temp
      Windchill
      Heat Index
      Dew Point
      Humidity
      Wind
      Precip.
      Elev.
      Updated
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      Level Access
      Glossary