National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Laurence G Hanscom Field Airport (KBED)

Lat: 42.47°NLon: 71.29°WElev: 132ft.

Partly Cloudy

79°F

26°C

Humidity 79%
Wind Speed S 8 mph
Barometer 30.00 in (1017.0 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 14 Jul 6:51 pm EDT
Extended Forecast for

Waltham MA

Heat Advisory July 15, 11:00am until July 17, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: A chance of showers and thunderstorms. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 72. Southwest wind 3 to 7 mph. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms then
    Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: A slight chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 3pm. Patchy fog before 8am. Otherwise, cloudy through mid morning, then gradual clearing and hot, with a high near 90. Heat index values as high as 96. Southwest wind 3 to 6 mph. Chance of precipitation is 20%.

    High: 90 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72. Southwest wind 3 to 5 mph.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 93. Heat index values as high as 99. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 93 °F

    Hot

  • Wednesday Night

    Wednesday Night: A slight chance of showers between midnight and 2am, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 75. Southwest wind around 6 mph. Chance of precipitation is 20%.

    Low: 75 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 9am. Partly sunny and hot, with a high near 91. Southwest wind 6 to 9 mph. Chance of precipitation is 30%.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 75. West wind around 7 mph. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 91. West wind around 7 mph. Chance of precipitation is 30%.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 67. North wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 72. Southwest wind 3 to 7 mph. Chance of precipitation is 40%.
Tuesday
A slight chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 3pm. Patchy fog before 8am. Otherwise, cloudy through mid morning, then gradual clearing and hot, with a high near 90. Heat index values as high as 96. Southwest wind 3 to 6 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 72. Southwest wind 3 to 5 mph.
Wednesday
Mostly sunny and hot, with a high near 93. Heat index values as high as 99. Calm wind becoming southwest around 6 mph in the afternoon.
Wednesday Night
A slight chance of showers between midnight and 2am, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 75. Southwest wind around 6 mph. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms, mainly after 9am. Partly sunny and hot, with a high near 91. Southwest wind 6 to 9 mph. Chance of precipitation is 30%.
Thursday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 75. West wind around 7 mph. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 91. West wind around 7 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 67. North wind 3 to 5 mph. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 83. North wind around 6 mph becoming east in the afternoon.
Saturday Night
Partly cloudy, with a low around 66. Southeast wind around 5 mph becoming calm in the evening.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. South wind 3 to 7 mph. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind around 6 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 82. Northwest wind around 7 mph becoming north in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waltham MA
 42.38°N 71.22°W (Elev. 49 ft)
Last Update:
2:03 pm EDT Jul 14, 2025
Forecast Valid:
6pm EDT Jul 14, 2025-6pm EDT Jul 21, 2025
 
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