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

69°F

21°C

Humidity 78%
Wind Speed NE 12 mph
Barometer 30.08 in (1019.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 21 Aug 9:51 am EDT
Extended Forecast for

Waltham MA

  • Today

    Today: A chance of showers after 5pm. Mostly cloudy, with a high near 75. Northeast wind around 10 mph. Chance of precipitation is 30%.

    High: 75 °F

    Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers before 7pm, then a chance of showers after midnight. Increasing clouds, with a low around 60. North wind around 6 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers. Patchy fog before noon, then patchy fog after 4pm. Otherwise, cloudy, with a high near 73. Northeast wind around 7 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 73 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday Night

    Saturday Night: Showers likely, with thunderstorms also possible after 5am. Patchy fog before 8pm. Otherwise, cloudy, with a low around 62. Light northeast wind. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms between 10am and 11am, then a chance of showers after 11am. Mostly cloudy, with a high near 76. Light and variable wind becoming southeast around 6 mph in the morning. Chance of precipitation is 60%.

    High: 76 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 64. Light south wind.

    Low: 64 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 82. Southwest wind 5 to 9 mph.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. West wind around 6 mph.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. West wind 6 to 9 mph.

    High: 78 °F

    Sunny

Detailed Forecast

Today
A chance of showers after 5pm. Mostly cloudy, with a high near 75. Northeast wind around 10 mph. Chance of precipitation is 30%.
Tonight
A slight chance of showers before 7pm, then a chance of showers after midnight. Increasing clouds, with a low around 60. North wind around 6 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A chance of showers. Patchy fog before noon, then patchy fog after 4pm. Otherwise, cloudy, with a high near 73. Northeast wind around 7 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Showers likely, with thunderstorms also possible after 5am. Patchy fog before 8pm. Otherwise, cloudy, with a low around 62. Light northeast wind. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms between 10am and 11am, then a chance of showers after 11am. Mostly cloudy, with a high near 76. Light and variable wind becoming southeast around 6 mph in the morning. Chance of precipitation is 60%.
Sunday Night
Mostly cloudy, with a low around 64. Light south wind.
Monday
Sunny, with a high near 82. Southwest wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 59. West wind around 6 mph.
Tuesday
Sunny, with a high near 78. West wind 6 to 9 mph.
Tuesday Night
Mostly clear, with a low around 59. West wind 3 to 5 mph.
Wednesday
Sunny, with a high near 81. West wind 5 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 62. Southwest wind 3 to 6 mph.
Thursday
A chance of showers. Partly sunny, with a high near 81. South wind 3 to 8 mph. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waltham MA
 42.38°N 71.24°W (Elev. 98 ft)
Last Update:
3:49 am EDT Aug 21, 2026
Forecast Valid:
10am EDT Aug 21, 2026-6pm EDT Aug 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