, °F

Personalized Forecasts

Featured Forecast

My Favorite Forecasts

    My Recent Locations

    • Early AM

      Sep 25

      40° Lo
      Clear
      • Migraine Headache
      • Weather
      • Hi RealFeel: 66°
      • UV: 4 - Moderate
      • Cloud Cover: 9%
      More
    • Today

      Sep 25

      64° /41°
      Cool with sunshine
      • Beneficial
      • weather for migraines
      • Hi RealFeel: 63°
      • UV: 4 - Moderate
      • Cloud Cover: 11%
      More
    • Mon

      Sep 26

      66° /47°F
      Sunny to partly cloudy
      • Beneficial
      • weather for migraines
      • Hi RealFeel: 72°
      • UV: 4 - Moderate
      • Cloud Cover: 58%
    • Tue

      Sep 27

      69° /53°
      Periods of rain
      • Beneficial
      • weather for migraines
      • Hi RealFeel: 67°
      • UV: 2 - Low
      • Cloud Cover: 62%
      More
    • Wed

      Sep 28

      73° /52°
      Times of clouds and sun
      • Neutral
      • weather for migraines
      • Hi RealFeel: 75°
      • UV: 4 - Moderate
      • Cloud Cover: 10%
      More
    Monday
    3am
    4am
    5am
    6am
    7am
    8am
    9am
    10am
    Forecast Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Sunny Sunny Sunny Sunny
    Temp (°F) 44° 43° 42° 41° 43° 44° 49° 53°
    RealFeel® 46° 45° 45° 43° 45° 46° 52° 59°
    Wind (mph) 2 NW 2 WNW 1 WNW 1 WNW 2 NW 2 NW 2 WNW 2 WSW
    precip
    3am
    4am
    5am
    6am
    7am
    8am
    9am
    10am
    Rain
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    3am
    4am
    5am
    6am
    7am
    8am
    9am
    10am
    UV Index 0 0 0 0 0 0 1 2
    Cloud Cover 11% 11% 11% 11% 11% 0% 1% 3%
    Humidity 72% 73% 75% 77% 82% 78% 68% 54%
    Dew Point 35° 34° 35° 34° 38° 37° 39° 37°
    Temp °F
    3am
    4am
    5am
    6am
    7am
    8am
    9am
    10am
    55° 50° 45° 40°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/26/2015
    High 66° 69° N/A 65°
    Low 47° 47° N/A 37°

    Sunrise/Sunset

    • Sunrise: 6:38 AM
    • Sunset: 6:34 PM
    • Duration: 11:56 hr

    Moonrise/Moonset

    • Moonrise: 2:08 AM
    • Moonset: 4:25 PM
    • Duration: 14:17 hr
    Astronomy

    Chelmsford Weather Report

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

    September 25, 2016; 1:09 AM 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 >

    Mon. Migraine Headache

    Mon. UV Index