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

77°F

25°C

Humidity 39%
Wind Speed Vrbl 6 mph
Barometer 30.11 in (1020.6 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 31 Aug 12:51 pm EDT
Extended Forecast for

Belmont MA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 79. East wind around 7 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Showers likely, mainly after 4am. Mostly cloudy, with a low around 63. South wind 3 to 7 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Mostly Cloudy
    then Showers
    Likely

  • Tuesday

    Tuesday: Showers, mainly before noon. Patchy fog before 3pm. High near 72. Southeast wind 5 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 72 °F

    Showers and
    Patchy Fog
    then Chance
    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 9pm, then a chance of showers after 10pm. Cloudy, with a low around 61. East wind 3 to 6 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 61 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 72. East wind 5 to 8 mph. Chance of precipitation is 30%.

    High: 72 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 62. Southeast wind around 6 mph. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 78. South wind 6 to 8 mph becoming west in the afternoon. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 11pm. Mostly cloudy, with a low around 63. Northwest wind 3 to 5 mph. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76. North wind 6 to 8 mph.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 79. East wind around 7 mph.
Tonight
Showers likely, mainly after 4am. Mostly cloudy, with a low around 63. South wind 3 to 7 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Showers, mainly before noon. Patchy fog before 3pm. High near 72. Southeast wind 5 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday Night
A slight chance of showers before 9pm, then a chance of showers after 10pm. Cloudy, with a low around 61. East wind 3 to 6 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 72. East wind 5 to 8 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 62. Southeast wind around 6 mph. Chance of precipitation is 80%.
Thursday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 78. South wind 6 to 8 mph becoming west in the afternoon. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 11pm. Mostly cloudy, with a low around 63. Northwest wind 3 to 5 mph. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 76. North wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around 60. North wind around 5 mph.
Saturday
Mostly sunny, with a high near 72. Northeast wind 7 to 9 mph.
Saturday Night
Partly cloudy, with a low around 58. Light north wind.
Sunday
Sunny, with a high near 73. North 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:
6:40 am EDT Aug 31, 2026
Forecast Valid:
1pm EDT Aug 31, 2026-6pm EDT Sep 6, 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