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

73°F

23°C

Humidity 62%
Wind Speed SE 13 mph
Barometer 30.08 in (1018.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 31 Aug 4:54 pm EDT
Extended Forecast for

Chelsea MA

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. Southeast wind 5 to 9 mph becoming light and variable after midnight.

    Low: 65 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Showers likely, then showers and possibly a thunderstorm after 2pm. Patchy fog. High near 69. Light southeast wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 69 °F

    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly before 1am. Cloudy, with a low around 63. East wind 5 to 7 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 71. East wind 7 to 9 mph.

    High: 71 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Showers likely, with thunderstorms also possible after 5am. Mostly cloudy, with a low around 64. Southeast wind around 6 mph. Chance of precipitation is 70%.

    Low: 64 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 8am, then showers between 8am and 11am, then showers and possibly a thunderstorm after 11am. High near 80. South wind 8 to 10 mph. Chance of precipitation is 80%.

    High: 80 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 66. West wind around 6 mph. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79. Northwest wind 6 to 8 mph.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. Northwest wind 5 to 7 mph.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 65. Southeast wind 5 to 9 mph becoming light and variable after midnight.
Tuesday
Showers likely, then showers and possibly a thunderstorm after 2pm. Patchy fog. High near 69. Light southeast wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
A chance of showers, mainly before 1am. Cloudy, with a low around 63. East wind 5 to 7 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Mostly cloudy, with a high near 71. East wind 7 to 9 mph.
Wednesday Night
Showers likely, with thunderstorms also possible after 5am. Mostly cloudy, with a low around 64. Southeast wind around 6 mph. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm before 8am, then showers between 8am and 11am, then showers and possibly a thunderstorm after 11am. High near 80. South wind 8 to 10 mph. Chance of precipitation is 80%.
Thursday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 66. West wind around 6 mph. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 79. Northwest wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around 62. Northwest wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 71. North wind 9 to 13 mph.
Saturday Night
Partly cloudy, with a low around 59. North wind 5 to 7 mph.
Sunday
Mostly sunny, with a high near 70. Northeast wind 9 to 13 mph.
Sunday Night
Partly cloudy, with a low around 58. Light and variable wind becoming north around 5 mph after midnight.
Labor Day
Sunny, with a high near 74. North wind 5 to 8 mph becoming east in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Chelsea MA
 42.38°N 71.04°W (Elev. 49 ft)
Last Update:
2:21 pm EDT Aug 31, 2026
Forecast Valid:
5pm EDT Aug 31, 2026-6pm EDT Sep 7, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation