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

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Mostly Cloudy

78°F

26°C

Humidity 67%
Wind Speed SW 12 mph
Barometer 30.06 in (1017.9 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 27 Aug 10:54 am EDT
Extended Forecast for

Watertown MA

  • Today

    Today: Partly sunny, with a high near 84. South wind 8 to 11 mph, with gusts as high as 21 mph.

    High: 84 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of showers between 1am and 2am. Patchy fog between midnight and 2am. Otherwise, mostly cloudy, with a low around 69. South wind 5 to 9 mph. Chance of precipitation is 20%.

    Low: 69 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 83. South wind 3 to 6 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. Light and variable wind becoming northwest around 5 mph 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: 65 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 81. North wind around 5 mph becoming east in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 63. Light and variable wind.

    Low: 63 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84. Southwest wind 5 to 9 mph.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 67. Southwest wind around 6 mph.

    Low: 67 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 82. West wind 5 to 7 mph becoming east in the afternoon.

    High: 82 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 84. South wind 8 to 11 mph, with gusts as high as 21 mph.
Tonight
A slight chance of showers between 1am and 2am. Patchy fog between midnight and 2am. Otherwise, mostly cloudy, with a low around 69. South wind 5 to 9 mph. Chance of precipitation is 20%.
Friday
A chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 83. South wind 3 to 6 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. Light and variable wind becoming northwest around 5 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 81. North wind around 5 mph becoming east in the afternoon.
Saturday Night
Partly cloudy, with a low around 63. Light and variable wind.
Sunday
Mostly sunny, with a high near 84. Southwest wind 5 to 9 mph.
Sunday Night
Mostly cloudy, with a low around 67. Southwest wind around 6 mph.
Monday
Partly sunny, with a high near 82. West wind 5 to 7 mph becoming east in the afternoon.
Monday Night
Mostly cloudy, with a low around 64. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers. Partly sunny, with a high near 77. Southeast wind 3 to 7 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 64. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 78. South wind 5 to 8 mph. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Watertown MA
 42.38°N 71.19°W (Elev. 98 ft)
Last Update:
2:29 am EDT Aug 27, 2026
Forecast Valid:
11am EDT Aug 27, 2026-6pm EDT Sep 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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