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.

Light Rain Fog/Mist

42°F

6°C

Humidity 96%
Wind Speed Calm
Barometer 29.61 in (1004.1 mb)
Dewpoint 41°F (5°C)
Visibility 5.00 mi
Last update 12 Mar 12:51 am EDT
Extended Forecast for

Belmont MA

  • Overnight

    Overnight: A chance of showers. Patchy fog between 2am and 3am. Otherwise, mostly cloudy, with a low around 44. South wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers. Cloudy, with a temperature falling to around 42 by 5pm. Southwest wind 11 to 14 mph becoming west in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F⇓

    Chance
    Showers

  • Thursday Night

    Thursday Night: Cloudy during the early evening, then gradual clearing, with a low around 30. West wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 30 °F

    Gradual
    Clearing

  • Friday

    Friday: Increasing clouds, with a high near 44. South wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 44 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A slight chance of rain between 9pm and 2am. Mostly cloudy, with a low around 37. South wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 37 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 47. West wind 11 to 17 mph, with gusts as high as 31 mph.

    High: 47 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29. West wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, with a high near 43. Light and variable wind becoming east around 6 mph in the morning.

    High: 43 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain likely, mainly after 4am. Cloudy, with a low around 37. Southeast wind 7 to 9 mph. Chance of precipitation is 60%.

    Low: 37 °F

    Cloudy then
    Rain Likely

Detailed Forecast

Overnight
A chance of showers. Patchy fog between 2am and 3am. Otherwise, mostly cloudy, with a low around 44. South wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of showers. Cloudy, with a temperature falling to around 42 by 5pm. Southwest wind 11 to 14 mph becoming west in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Cloudy during the early evening, then gradual clearing, with a low around 30. West wind 8 to 10 mph, with gusts as high as 20 mph.
Friday
Increasing clouds, with a high near 44. South wind 6 to 11 mph, with gusts as high as 21 mph.
Friday Night
A slight chance of rain between 9pm and 2am. Mostly cloudy, with a low around 37. South wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 47. West wind 11 to 17 mph, with gusts as high as 31 mph.
Saturday Night
Mostly clear, with a low around 29. West wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly cloudy, with a high near 43. Light and variable wind becoming east around 6 mph in the morning.
Sunday Night
Rain likely, mainly after 4am. Cloudy, with a low around 37. Southeast wind 7 to 9 mph. Chance of precipitation is 60%.
Monday
Rain. High near 59. South wind 11 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 90%.
Monday Night
Rain likely. Mostly cloudy, with a low around 32. South wind 10 to 13 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Tuesday
Mostly sunny, with a high near 41. West wind 10 to 13 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly clear, with a low around 23. West wind around 8 mph.
Wednesday
Mostly sunny, with a high near 38. West wind 6 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Belmont MA
 42.4°N 71.18°W (Elev. 98 ft)
Last Update:
4:43 pm EDT Mar 11, 2026
Forecast Valid:
1am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation