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.

Overcast

67°F

19°C

Humidity 87%
Wind Speed N 5 mph
Barometer 29.84 in (1010.5 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 30 Jul 8:54 pm EDT
Extended Forecast for

Watertown MA

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 61. Calm wind becoming west around 5 mph.

    Low: 61 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: A slight chance of showers after 3pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 81. Light and variable wind. Chance of precipitation is 20%.

    High: 81 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 64. Light southwest wind.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 86. Calm wind becoming south around 6 mph in the afternoon.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 67. South wind around 6 mph.

    Low: 67 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 85. South wind 7 to 11 mph.

    High: 85 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers after midnight. Mostly cloudy, with a low around 69. South wind 5 to 8 mph. Chance of precipitation is 40%.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 84. Southwest wind 7 to 10 mph. Chance of precipitation is 50%.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 10pm. Partly cloudy, with a low around 65. West wind around 6 mph. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 61. Calm wind becoming west around 5 mph.
Friday
A slight chance of showers after 3pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 81. Light and variable wind. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 64. Light southwest wind.
Saturday
Mostly sunny, with a high near 86. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 67. South wind around 6 mph.
Sunday
Partly sunny, with a high near 85. South wind 7 to 11 mph.
Sunday Night
A chance of showers after midnight. Mostly cloudy, with a low around 69. South wind 5 to 8 mph. Chance of precipitation is 40%.
Monday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 84. Southwest wind 7 to 10 mph. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 10pm. Partly cloudy, with a low around 65. West wind around 6 mph. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 85. West wind 5 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 65. Southwest wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 86. South wind 3 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 67. South wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 88. Light southwest 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:
2:29 pm EDT Jul 30, 2026
Forecast Valid:
9pm EDT Jul 30, 2026-6pm EDT Aug 6, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation