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

30°F

-1°C

Humidity 61%
Wind Speed S 3 mph
Barometer 30.13 in (1020.3 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 17 Jan 4:54 am EST
Extended Forecast for

Watertown MA

  • Overnight

    Overnight: A chance of snow. Cloudy, with a low around 25. Light south wind. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 25 °F

    Chance Snow

  • Saturday

    Saturday: A chance of snow before 10am, then rain likely. Cloudy, with a high near 43. South wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 43 °F

    Chance
    Rain/Snow
    then Rain
    Likely

  • Saturday Night

    Saturday Night: Patchy fog between 8pm and 9pm. Otherwise, mostly cloudy, with a low around 30. Southwest wind 3 to 6 mph.

    Low: 30 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Sunday

    Sunday: Snow likely, mainly after 4pm. Cloudy, with a high near 39. Southwest wind 5 to 9 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 39 °F

    Slight Chance
    Snow then
    Snow Likely

  • Sunday Night

    Sunday Night: Snow, mainly before 11pm. Low around 25. Calm wind becoming west around 6 mph in the evening. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 25 °F

    Snow then
    Chance Snow

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 35. West wind 7 to 15 mph, with gusts as high as 25 mph.

    High: 35 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 19. West wind 13 to 15 mph.

    Low: 19 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 25. West wind 9 to 14 mph, with gusts as high as 26 mph.

    High: 25 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 13. West wind around 7 mph.

    Low: 13 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of snow. Cloudy, with a low around 25. Light south wind. Chance of precipitation is 50%. Little or no snow accumulation expected.
Saturday
A chance of snow before 10am, then rain likely. Cloudy, with a high near 43. South wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 60%. Little or no snow accumulation expected.
Saturday Night
Patchy fog between 8pm and 9pm. Otherwise, mostly cloudy, with a low around 30. Southwest wind 3 to 6 mph.
Sunday
Snow likely, mainly after 4pm. Cloudy, with a high near 39. Southwest wind 5 to 9 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday Night
Snow, mainly before 11pm. Low around 25. Calm wind becoming west around 6 mph in the evening. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
M.L.King Day
Mostly sunny, with a high near 35. West wind 7 to 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 19. West wind 13 to 15 mph.
Tuesday
Mostly sunny, with a high near 25. West wind 9 to 14 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 13. West wind around 7 mph.
Wednesday
Mostly sunny, with a high near 32. Southwest wind 6 to 10 mph, with gusts as high as 23 mph.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 26. Southwest wind around 7 mph. Chance of precipitation is 30%.
Thursday
A chance of snow showers. Partly sunny, with a high near 39. West wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 22. West wind around 7 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 31. West wind 6 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Watertown MA
 42.37°N 71.16°W (Elev. 46 ft)
Last Update:
4:57 am EST Jan 17, 2026
Forecast Valid:
5am EST Jan 17, 2026-6pm EST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation