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.

Fair

79°F

26°C

Humidity 69%
Wind Speed SW 6 mph
Barometer 29.82 in (1010.8 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 4 Jul 1:51 am EDT
Extended Forecast for

Waltham MA

Extreme Heat Warning July 4, 02:10am until July 4, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 4, 02:10am until July 4, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Overnight

    Low: 74 °F

    Slight Chance
    Showers

  • Independence Day

    Independence Day: A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 94. West wind 6 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 66. Northwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 83. Northeast wind 5 to 8 mph becoming east in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 61. Southeast wind around 6 mph becoming calm after midnight.

    Low: 61 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers. Partly sunny, with a high near 80. Southeast wind 3 to 8 mph. Chance of precipitation is 40%.

    High: 80 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after 9pm. Mostly cloudy, with a low around 61. East wind 3 to 5 mph. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 73. East wind 6 to 9 mph. Chance of precipitation is 60%.

    High: 73 °F

    Showers
    Likely then
    Chance
    T-storms

Detailed Forecast

Overnight
A slight chance of showers. Partly cloudy, with a low around 74. West wind around 5 mph. Chance of precipitation is 20%.
Independence Day
A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 94. West wind 6 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 66. Northwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly sunny, with a high near 83. Northeast wind 5 to 8 mph becoming east in the afternoon.
Sunday Night
Mostly cloudy, with a low around 61. Southeast wind around 6 mph becoming calm after midnight.
Monday
A chance of showers. Partly sunny, with a high near 80. Southeast wind 3 to 8 mph. Chance of precipitation is 40%.
Monday Night
Showers likely, mainly after 9pm. Mostly cloudy, with a low around 61. East wind 3 to 5 mph. Chance of precipitation is 60%.
Tuesday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 73. East wind 6 to 9 mph. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and midnight. Mostly cloudy, with a low around 62. East wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 80. North wind 5 to 7 mph becoming southeast in the afternoon.
Wednesday Night
Partly cloudy, with a low around 66. Light southwest wind.
Thursday
Mostly sunny and hot, with a high near 91. Southwest wind 3 to 7 mph.
Thursday Night
Partly cloudy, with a low around 69. Southwest wind around 6 mph.
Friday
A chance of showers. Mostly sunny and hot, with a high near 91. Southwest wind 5 to 8 mph. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waltham MA
 42.39°N 71.27°W (Elev. 197 ft)
Last Update:
12:45 am EDT Jul 4, 2026
Forecast Valid:
2am EDT Jul 4, 2026-6pm EDT Jul 10, 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