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

Hazardous Weather Conditions

Current conditions at

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Partly Cloudy

66°F

19°C

Humidity 87%
Wind Speed SW 3 mph
Barometer 30.12 in (1019.8 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 30 Jun 5:54 am EDT
Extended Forecast for

Watertown MA

Extreme Heat Warning July 1, 10:00am until July 4, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Mostly sunny, with a high near 89. Light southwest wind becoming south 5 to 10 mph in the morning.

    High: 89 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 72. Southwest wind 11 to 13 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 72 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 3pm. Partly sunny and hot, with a high near 97. Heat index values as high as 105. West wind around 14 mph. Chance of precipitation is 20%.

    High: 97 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 76. Southwest wind 6 to 9 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    Showers

  • Thursday

    Thursday: Sunny and hot, with a high near 102. West wind 7 to 10 mph.

    High: 102 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 77. West wind 5 to 8 mph.

    Low: 77 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. West wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. West wind 5 to 7 mph.

    Low: 74 °F

    Mostly Clear

  • Independence Day

    Independence Day: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95. West wind 5 to 9 mph. Chance of precipitation is 30%.

    High: 95 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 89. Light southwest wind becoming south 5 to 10 mph in the morning.
Tonight
A chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 72. Southwest wind 11 to 13 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A slight chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 3pm. Partly sunny and hot, with a high near 97. Heat index values as high as 105. West wind around 14 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 76. Southwest wind 6 to 9 mph. Chance of precipitation is 30%.
Thursday
Sunny and hot, with a high near 102. West wind 7 to 10 mph.
Thursday Night
Clear, with a low around 77. West wind 5 to 8 mph.
Friday
Sunny and hot, with a high near 99. West wind 7 to 11 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 74. West wind 5 to 7 mph.
Independence Day
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95. West wind 5 to 9 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 10pm. Partly cloudy, with a low around 72. West wind 3 to 5 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 88. Light and variable wind becoming north 5 to 8 mph in the morning.
Sunday Night
Partly cloudy, with a low around 67. East wind around 5 mph becoming calm in the evening.
Monday
Partly sunny, with a high near 85. Light east wind increasing to 5 to 9 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Watertown MA
 42.38°N 71.19°W (Elev. 98 ft)
Last Update:
5:34 am EDT Jun 30, 2026
Forecast Valid:
6am EDT Jun 30, 2026-6pm EDT Jul 6, 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