National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Laurence G Hanscom Field Airport (KBED)

Lat: 42.47°NLon: 71.29°WElev: 132ft.

Fair

40°F

4°C

Humidity 41%
Wind Speed N 5 mph
Barometer 30.00 in (1017.2 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 21 Mar 7:51 pm EDT
Extended Forecast for

Chelmsford MA

  • Tonight

    Tonight: A slight chance of rain before 1am, then a chance of rain after 3am. Mostly cloudy, with a low around 33. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 33 °F

    Chance Rain

  • Sunday

    Sunday: Rain, mainly after 9am. High near 44. South wind 5 to 7 mph becoming calm in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Rain

  • Sunday Night

    Sunday Night: Rain likely before 5am, then a chance of rain and snow. Cloudy, with a low around 32. North wind around 6 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Monday

    Monday: A chance of snow showers before 3pm, then a chance of rain showers. Cloudy, with a high near 40. North wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Monday Night

    Monday Night: A chance of snow showers, mainly before 1am. Mostly cloudy, with a low around 27. Northwest wind around 6 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Chance Snow
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44. Light and variable wind becoming west around 5 mph in the afternoon.

    High: 44 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 30. Southwest wind around 6 mph.

    Low: 30 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 50. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.

    High: 50 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30. West wind around 6 mph.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of rain before 1am, then a chance of rain after 3am. Mostly cloudy, with a low around 33. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain, mainly after 9am. High near 44. South wind 5 to 7 mph becoming calm in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain likely before 5am, then a chance of rain and snow. Cloudy, with a low around 32. North wind around 6 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday
A chance of snow showers before 3pm, then a chance of rain showers. Cloudy, with a high near 40. North wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Monday Night
A chance of snow showers, mainly before 1am. Mostly cloudy, with a low around 27. Northwest wind around 6 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Tuesday
Mostly sunny, with a high near 44. Light and variable wind becoming west around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 30. Southwest wind around 6 mph.
Wednesday
Partly sunny, with a high near 50. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 30. West wind around 6 mph.
Thursday
A chance of rain and snow before 11am, then a chance of rain between 11am and 5pm, then a chance of rain and snow after 5pm. Mostly cloudy, with a high near 51. South wind 5 to 9 mph. Chance of precipitation is 30%.
Thursday Night
Rain and snow likely. Mostly cloudy, with a low around 36. Southwest wind around 9 mph. Chance of precipitation is 70%.
Friday
A chance of rain and snow. Mostly sunny, with a high near 46. Northwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 22. Northwest wind around 7 mph.
Saturday
Sunny, with a high near 42. West wind 5 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chelmsford MA
 42.6°N 71.34°W (Elev. 144 ft)
Last Update:
6:13 pm EDT Mar 21, 2026
Forecast Valid:
8pm EDT Mar 21, 2026-6pm EDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation