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

66°F

19°C

Humidity 93%
Wind Speed S 9 mph
Barometer 29.90 in (1013.6 mb)
Dewpoint 64°F (18°C)
Visibility 7.00 mi
Last update 17 Aug 4:51 am EDT
Extended Forecast for

Waltham MA

  • Overnight

    Overnight: A chance of showers. Mostly cloudy, with a low around 67. South wind around 8 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 67 °F

    Chance
    Showers

  • Monday

    Monday: Showers likely, mainly before 9am. Patchy fog between 8am and 1pm. Otherwise, mostly cloudy, with a high near 75. South wind around 8 mph becoming east in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 75 °F

    Showers
    Likely and
    Patchy Fog

  • Monday Night

    Monday Night: A slight chance of showers before 1am. Patchy fog. Otherwise, mostly cloudy, with a low around 66. Light north wind. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: A slight chance of showers after 3pm. Patchy fog before 10am. Otherwise, partly sunny, with a high near 81. Northeast wind 3 to 5 mph. Chance of precipitation is 20%.

    High: 81 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 87. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. Southwest wind 3 to 5 mph.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers after 1pm. Mostly sunny, with a high near 85. West wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 85 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers. Mostly cloudy, with a low around 67. South wind around 8 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers likely, mainly before 9am. Patchy fog between 8am and 1pm. Otherwise, mostly cloudy, with a high near 75. South wind around 8 mph becoming east in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A slight chance of showers before 1am. Patchy fog. Otherwise, mostly cloudy, with a low around 66. Light north wind. Chance of precipitation is 20%.
Tuesday
A slight chance of showers after 3pm. Patchy fog before 10am. Otherwise, partly sunny, with a high near 81. Northeast wind 3 to 5 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 65. Calm wind.
Wednesday
Sunny, with a high near 87. Calm wind becoming southwest around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 66. Southwest wind 3 to 5 mph.
Thursday
A chance of showers after 1pm. Mostly sunny, with a high near 85. West wind 3 to 6 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 62. Calm wind.
Friday
Mostly sunny, with a high near 82. Light and variable wind becoming east 5 to 7 mph in the morning.
Friday Night
Partly cloudy, with a low around 62. Light east wind.
Saturday
A chance of showers. Partly sunny, with a high near 79. Calm wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 62. 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 79. Northeast wind 5 to 7 mph. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Waltham MA
 42.36°N 71.25°W (Elev. 30 ft)
Last Update:
4:34 am EDT Aug 17, 2026
Forecast Valid:
5am EDT Aug 17, 2026-6pm EDT Aug 23, 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