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.

Mostly Cloudy

76°F

24°C

Humidity 72%
Wind Speed SW 13 mph
Barometer 29.93 in (1013.6 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 1 Jul 8:54 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: A chance of showers and thunderstorms, mainly after 10am. Partly sunny and hot, with a high near 96. Heat index values as high as 105. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    High: 96 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 76. Southwest wind 9 to 11 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 7am. Mostly sunny and hot, with a high near 101. Heat index values as high as 108. West wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 101 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 78. West wind 7 to 9 mph.

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. West wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. West wind 5 to 9 mph.

    Low: 76 °F

    Mostly Clear

  • Independence Day

    Independence Day: Sunny and hot, with a high near 95. West wind 5 to 10 mph.

    High: 95 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71. West wind 3 to 5 mph.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers after 2pm. Partly sunny, with a high near 89. Light and variable wind becoming east 5 to 8 mph in the morning. Chance of precipitation is 30%.

    High: 89 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 10am. Partly sunny and hot, with a high near 96. Heat index values as high as 105. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Tonight
A chance of showers and thunderstorms before 2am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 76. Southwest wind 9 to 11 mph. Chance of precipitation is 30%.
Thursday
A slight chance of showers and thunderstorms before 7am. Mostly sunny and hot, with a high near 101. Heat index values as high as 108. West wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 78. West wind 7 to 9 mph.
Friday
Sunny and hot, with a high near 99. West wind 8 to 10 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 76. West wind 5 to 9 mph.
Independence Day
Sunny and hot, with a high near 95. West wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 71. West wind 3 to 5 mph.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 89. Light and variable wind becoming east 5 to 8 mph in the morning. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 68. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Monday
A chance of showers. Partly sunny, with a high near 83. East wind 3 to 8 mph. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 66. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 84. North wind 5 to 9 mph becoming east in the afternoon.
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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:
4:30 am EDT Jul 1, 2026
Forecast Valid:
9am EDT Jul 1, 2026-6pm EDT Jul 7, 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