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    Next 5 Days
    • Tonight

      Sep 24

      40° Lo F
      Clear and chilly
    • Sun

      Sep 25

      64° /41°
      Cool with sunshine
      More
    • Mon

      Sep 26

      66° /47°
      Sunny to partly cloudy
      More
    • Tue

      Sep 27

      69° /53°
      Periods of rain
      More
    • Wed

      Sep 28

      73° /52°
      Pleasant with clouds and sun
      More
    Saturday
    11pm
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    4am
    5am
    6am
    Forecast Clear Clear Clear Clear Clear Clear Clear Clear
    Temp (°F) 54° 52° 51° 49° 46° 45° 44° 40°
    RealFeel® 54° 53° 51° 49° 47° 45° 44° 41°
    Wind (mph) 2 NW 4 NW 4 WNW 4 NW 4 NW 4 NW 4 NW 4 NW
    precip
    11pm
    12am
    1am
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    3am
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    Rain
    2%
    2%
    1%
    0%
    0%
    0%
    0%
    0%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    11pm
    12am
    1am
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    3am
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    6am
    UV Index 0 0 0 0 0 0 0 0
    Cloud Cover 2% 1% 0% 0% 0% 0% 0% 0%
    Humidity 57% 58% 62% 64% 65% 67% 70% 76%
    Dew Point 39° 38° 38° 37° 35° 34° 35° 33°
    Temp °F
    11pm
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    55° 50° 45° 40°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/24/2015
    High 67° 70° N/A 76°
    Low 40° 48° N/A 45°

    Sunrise/Sunset

    • Sunrise: 6:36 AM
    • Sunset: 6:38 PM
    • Duration: 12:02 hr

    Moonrise/Moonset

    • Moonrise: 12:08 AM
    • Moonset: 3:00 PM
    • Duration: 14:52 hr
    Astronomy

    Chelmsford Weather Report

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

    September 24, 2016; 3:04 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 >