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

62°F

17°C

Humidity 75%
Wind Speed Calm
Barometer 30.05 in (1018.8 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 17 May 10:51 pm EDT
Extended Forecast for

Waltham MA

  • Tonight

    Tonight: Partly cloudy, with a low around 56. Light and variable wind.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79. East wind 5 to 8 mph.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 63. Southwest wind around 7 mph.

    Low: 63 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after 5pm. Mostly sunny and hot, with a high near 92. Southwest wind 6 to 13 mph. Chance of precipitation is 20%.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69. Southwest wind 8 to 10 mph.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 89. West wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 89 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 7pm. Mostly cloudy, with a low around 54. West wind 7 to 9 mph. Chance of precipitation is 60%.

    Low: 54 °F

    Showers
    Likely then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 69. North wind around 8 mph.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. North wind around 5 mph becoming calm in the evening.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. Light and variable wind.
Monday
Mostly sunny, with a high near 79. East wind 5 to 8 mph.
Monday Night
Increasing clouds, with a low around 63. Southwest wind around 7 mph.
Tuesday
A slight chance of showers and thunderstorms after 5pm. Mostly sunny and hot, with a high near 92. Southwest wind 6 to 13 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 69. Southwest wind 8 to 10 mph.
Wednesday
A chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 89. West wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Wednesday Night
Showers likely, mainly before 7pm. Mostly cloudy, with a low around 54. West wind 7 to 9 mph. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 69. North wind around 8 mph.
Thursday Night
Partly cloudy, with a low around 48. North wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 67. Calm wind becoming southeast 5 to 8 mph in the afternoon.
Friday Night
A chance of showers. Mostly cloudy, with a low around 48. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly cloudy, with a high near 66. Calm wind becoming east 5 to 8 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 50. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Sunday
A chance of showers. Mostly cloudy, with a high near 67. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Waltham MA
 42.38°N 71.22°W (Elev. 49 ft)
Last Update:
4:34 pm EDT May 17, 2026
Forecast Valid:
10pm EDT May 17, 2026-6pm EDT May 24, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation