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.

Overcast

60°F

16°C

Humidity 42%
Wind Speed NW 8 mph
Barometer 30.16 in (1022.6 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 21 May 7:51 am EDT
Extended Forecast for

Chelmsford MA

  • Today

    Today: A slight chance of showers before 10am. Mostly cloudy, with a high near 66. Northwest wind 5 to 7 mph. Chance of precipitation is 20%.

    High: 66 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 41. Light north wind.

    Low: 41 °F

    Decreasing
    Clouds

  • Friday

    Friday: Mostly sunny, with a high near 67. Northeast wind around 5 mph becoming light and variable.

    High: 67 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 48. Light and variable wind.

    Low: 48 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 66. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 66 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Showers likely, mainly after 5am. Cloudy, with a low around 46. Light east wind. Chance of precipitation is 60%.

    Low: 46 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Showers. High near 57. East wind 6 to 8 mph. Chance of precipitation is 80%.

    High: 57 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before 10pm. Cloudy, with a low around 47. Northeast wind 3 to 6 mph. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely

  • Memorial Day

    Memorial Day: A chance of showers. Mostly cloudy, with a high near 69. Light and variable wind becoming north around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers

Detailed Forecast

Today
A slight chance of showers before 10am. Mostly cloudy, with a high near 66. Northwest wind 5 to 7 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 41. Light north wind.
Friday
Mostly sunny, with a high near 67. Northeast wind around 5 mph becoming light and variable.
Friday Night
Mostly cloudy, with a low around 48. Light and variable wind.
Saturday
Mostly cloudy, with a high near 66. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Saturday Night
Showers likely, mainly after 5am. Cloudy, with a low around 46. Light east wind. Chance of precipitation is 60%.
Sunday
Showers. High near 57. East wind 6 to 8 mph. Chance of precipitation is 80%.
Sunday Night
Showers likely, mainly before 10pm. Cloudy, with a low around 47. Northeast wind 3 to 6 mph. Chance of precipitation is 60%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 69. Light and variable wind becoming north around 5 mph in the afternoon. Chance of precipitation is 30%.
Monday Night
A chance of showers before 9pm. Mostly cloudy, with a low around 53. Calm wind. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 80. Calm wind becoming northwest around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 56. Light west wind.
Wednesday
Mostly sunny, with a high near 80. Northwest wind 3 to 8 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:
6:42 am EDT May 21, 2026
Forecast Valid:
8am EDT May 21, 2026-6pm EDT May 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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