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

48°F

9°C

Humidity 83%
Wind Speed E 15 mph
Barometer 30.10 in (1019.1 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 18 Apr 3:54 pm EDT
Extended Forecast for

Watertown MA

  • Tonight

    Tonight: Patchy drizzle after 4am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 46. East wind around 6 mph becoming calm in the evening.

    Low: 46 °F

    Patchy Fog
    then Patchy
    Drizzle and
    Patchy Fog

  • Sunday

    Sunday: Showers, mainly after 10am. Patchy fog between 11am and noon. High near 56. South wind 5 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers
    Likely and
    Patchy Fog
    then Showers

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 36. West wind 6 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: A slight chance of showers after 3pm. Mostly sunny, with a high near 52. West wind 6 to 8 mph. Chance of precipitation is 20%.

    High: 52 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. North wind around 6 mph.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 51. North wind around 6 mph becoming southeast in the afternoon.

    High: 51 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37. Southwest wind around 7 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 56. Southwest wind 6 to 9 mph.

    High: 56 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 40. West wind around 6 mph.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy drizzle after 4am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 46. East wind around 6 mph becoming calm in the evening.
Sunday
Showers, mainly after 10am. Patchy fog between 11am and noon. High near 56. South wind 5 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 36. West wind 6 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A slight chance of showers after 3pm. Mostly sunny, with a high near 52. West wind 6 to 8 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 32. North wind around 6 mph.
Tuesday
Sunny, with a high near 51. North wind around 6 mph becoming southeast in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 37. Southwest wind around 7 mph.
Wednesday
Mostly cloudy, with a high near 56. Southwest wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 40. West wind around 6 mph.
Thursday
Mostly sunny, with a high near 64. Northwest wind 6 to 8 mph.
Thursday Night
Partly cloudy, with a low around 43. Northwest wind around 6 mph.
Friday
Mostly sunny, with a high near 63. North wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 43. East wind around 6 mph becoming light and variable in the evening.
Saturday
A chance of showers. Partly sunny, with a high near 60. North wind 5 to 8 mph becoming east in the afternoon. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown MA
 42.37°N 71.16°W (Elev. 46 ft)
Last Update:
3:32 pm EDT Apr 18, 2026
Forecast Valid:
4pm EDT Apr 18, 2026-6pm EDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation