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

47°F

8°C

Humidity 100%
Wind Speed Calm
Barometer 30.04 in (1018.6 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 17 Apr 10:51 pm EDT
Extended Forecast for

Belmont MA

  • Tonight

    Tonight: Areas of fog after 2am. Otherwise, increasing clouds, with a low around 49. Light north wind.

    Low: 49 °F

    Areas Fog

  • Saturday

    Saturday: Areas of fog before 11am. Otherwise, cloudy, with a high near 52. East wind 6 to 10 mph.

    High: 52 °F

    Areas Fog
    then Cloudy

  • Saturday Night

    Saturday Night: A chance of showers between 11pm and 3am, then a slight chance of rain after 3am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 45. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 45 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Rain before 4pm, then rain and snow likely. Some thunder is also possible. Patchy fog before 9am, then patchy fog after 11am. High near 56. South wind 6 to 10 mph becoming west in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 56 °F

    Showers
    Likely and
    Patchy Fog
    then
    Rain/Snow and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain, mainly before 8pm. Low around 36. West wind 7 to 9 mph. Chance of precipitation is 80%.

    Low: 36 °F

    Rain then
    Mostly Clear

  • Monday

    Monday: A slight chance of rain after 3pm. Mostly sunny, with a high near 46. West wind around 9 mph. Chance of precipitation is 20%.

    High: 46 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. North wind around 6 mph.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 52. North wind 5 to 7 mph becoming south in the afternoon.

    High: 52 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39. Southwest wind around 7 mph.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Tonight
Areas of fog after 2am. Otherwise, increasing clouds, with a low around 49. Light north wind.
Saturday
Areas of fog before 11am. Otherwise, cloudy, with a high near 52. East wind 6 to 10 mph.
Saturday Night
A chance of showers between 11pm and 3am, then a slight chance of rain after 3am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 45. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Sunday
Rain before 4pm, then rain and snow likely. Some thunder is also possible. Patchy fog before 9am, then patchy fog after 11am. High near 56. South wind 6 to 10 mph becoming west in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.
Sunday Night
Rain, mainly before 8pm. Low around 36. West wind 7 to 9 mph. Chance of precipitation is 80%.
Monday
A slight chance of rain after 3pm. Mostly sunny, with a high near 46. West wind around 9 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 32. North wind around 6 mph.
Tuesday
Sunny, with a high near 52. North wind 5 to 7 mph becoming south in the afternoon.
Tuesday Night
Partly cloudy, with a low around 39. Southwest wind around 7 mph.
Wednesday
Partly sunny, with a high near 60. Southwest wind 7 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 40. Northwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 61. Northwest wind 5 to 8 mph.
Thursday Night
Partly cloudy, with a low around 43. Northwest wind around 6 mph.
Friday
Mostly sunny, with a high near 63. Northwest wind 6 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Belmont MA
 42.4°N 71.18°W (Elev. 98 ft)
Last Update:
7:53 pm EDT Apr 17, 2026
Forecast Valid:
11pm EDT Apr 17, 2026-6pm EDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation